xmpp.chapril.org-conversejs/builds/converse.nojquery.js

/**
 * @license almond 0.3.0 Copyright (c) 2011-2014, The Dojo Foundation All Rights Reserved.
 * Available via the MIT or new BSD license.
 * see: http://github.com/jrburke/almond for details
 */
//Going sloppy to avoid 'use strict' string cost, but strict practices should
//be followed.
/*jslint sloppy: true */
/*global setTimeout: false */

var requirejs, require, define;
(function (undef) {
    var main, req, makeMap, handlers,
        defined = {},
        waiting = {},
        config = {},
        defining = {},
        hasOwn = Object.prototype.hasOwnProperty,
        aps = [].slice,
        jsSuffixRegExp = /\.js$/;

    function hasProp(obj, prop) {
        return hasOwn.call(obj, prop);
    }

    /**
     * Given a relative module name, like ./something, normalize it to
     * a real name that can be mapped to a path.
     * @param {String} name the relative name
     * @param {String} baseName a real name that the name arg is relative
     * to.
     * @returns {String} normalized name
     */
    function normalize(name, baseName) {
        var nameParts, nameSegment, mapValue, foundMap, lastIndex,
            foundI, foundStarMap, starI, i, j, part,
            baseParts = baseName && baseName.split("/"),
            map = config.map,
            starMap = (map && map['*']) || {};

        //Adjust any relative paths.
        if (name && name.charAt(0) === ".") {
            //If have a base name, try to normalize against it,
            //otherwise, assume it is a top-level require that will
            //be relative to baseUrl in the end.
            if (baseName) {
                //Convert baseName to array, and lop off the last part,
                //so that . matches that "directory" and not name of the baseName's
                //module. For instance, baseName of "one/two/three", maps to
                //"one/two/three.js", but we want the directory, "one/two" for
                //this normalization.
                baseParts = baseParts.slice(0, baseParts.length - 1);
                name = name.split('/');
                lastIndex = name.length - 1;

                // Node .js allowance:
                if (config.nodeIdCompat && jsSuffixRegExp.test(name[lastIndex])) {
                    name[lastIndex] = name[lastIndex].replace(jsSuffixRegExp, '');
                }

                name = baseParts.concat(name);

                //start trimDots
                for (i = 0; i < name.length; i += 1) {
                    part = name[i];
                    if (part === ".") {
                        name.splice(i, 1);
                        i -= 1;
                    } else if (part === "..") {
                        if (i === 1 && (name[2] === '..' || name[0] === '..')) {
                            //End of the line. Keep at least one non-dot
                            //path segment at the front so it can be mapped
                            //correctly to disk. Otherwise, there is likely
                            //no path mapping for a path starting with '..'.
                            //This can still fail, but catches the most reasonable
                            //uses of ..
                            break;
                        } else if (i > 0) {
                            name.splice(i - 1, 2);
                            i -= 2;
                        }
                    }
                }
                //end trimDots

                name = name.join("/");
            } else if (name.indexOf('./') === 0) {
                // No baseName, so this is ID is resolved relative
                // to baseUrl, pull off the leading dot.
                name = name.substring(2);
            }
        }

        //Apply map config if available.
        if ((baseParts || starMap) && map) {
            nameParts = name.split('/');

            for (i = nameParts.length; i > 0; i -= 1) {
                nameSegment = nameParts.slice(0, i).join("/");

                if (baseParts) {
                    //Find the longest baseName segment match in the config.
                    //So, do joins on the biggest to smallest lengths of baseParts.
                    for (j = baseParts.length; j > 0; j -= 1) {
                        mapValue = map[baseParts.slice(0, j).join('/')];

                        //baseName segment has  config, find if it has one for
                        //this name.
                        if (mapValue) {
                            mapValue = mapValue[nameSegment];
                            if (mapValue) {
                                //Match, update name to the new value.
                                foundMap = mapValue;
                                foundI = i;
                                break;
                            }
                        }
                    }
                }

                if (foundMap) {
                    break;
                }

                //Check for a star map match, but just hold on to it,
                //if there is a shorter segment match later in a matching
                //config, then favor over this star map.
                if (!foundStarMap && starMap && starMap[nameSegment]) {
                    foundStarMap = starMap[nameSegment];
                    starI = i;
                }
            }

            if (!foundMap && foundStarMap) {
                foundMap = foundStarMap;
                foundI = starI;
            }

            if (foundMap) {
                nameParts.splice(0, foundI, foundMap);
                name = nameParts.join('/');
            }
        }

        return name;
    }

    function makeRequire(relName, forceSync) {
        return function () {
            //A version of a require function that passes a moduleName
            //value for items that may need to
            //look up paths relative to the moduleName
            var args = aps.call(arguments, 0);

            //If first arg is not require('string'), and there is only
            //one arg, it is the array form without a callback. Insert
            //a null so that the following concat is correct.
            if (typeof args[0] !== 'string' && args.length === 1) {
                args.push(null);
            }
            return req.apply(undef, args.concat([relName, forceSync]));
        };
    }

    function makeNormalize(relName) {
        return function (name) {
            return normalize(name, relName);
        };
    }

    function makeLoad(depName) {
        return function (value) {
            defined[depName] = value;
        };
    }

    function callDep(name) {
        if (hasProp(waiting, name)) {
            var args = waiting[name];
            delete waiting[name];
            defining[name] = true;
            main.apply(undef, args);
        }

        if (!hasProp(defined, name) && !hasProp(defining, name)) {
            throw new Error('No ' + name);
        }
        return defined[name];
    }

    //Turns a plugin!resource to [plugin, resource]
    //with the plugin being undefined if the name
    //did not have a plugin prefix.
    function splitPrefix(name) {
        var prefix,
            index = name ? name.indexOf('!') : -1;
        if (index > -1) {
            prefix = name.substring(0, index);
            name = name.substring(index + 1, name.length);
        }
        return [prefix, name];
    }

    /**
     * Makes a name map, normalizing the name, and using a plugin
     * for normalization if necessary. Grabs a ref to plugin
     * too, as an optimization.
     */
    makeMap = function (name, relName) {
        var plugin,
            parts = splitPrefix(name),
            prefix = parts[0];

        name = parts[1];

        if (prefix) {
            prefix = normalize(prefix, relName);
            plugin = callDep(prefix);
        }

        //Normalize according
        if (prefix) {
            if (plugin && plugin.normalize) {
                name = plugin.normalize(name, makeNormalize(relName));
            } else {
                name = normalize(name, relName);
            }
        } else {
            name = normalize(name, relName);
            parts = splitPrefix(name);
            prefix = parts[0];
            name = parts[1];
            if (prefix) {
                plugin = callDep(prefix);
            }
        }

        //Using ridiculous property names for space reasons
        return {
            f: prefix ? prefix + '!' + name : name, //fullName
            n: name,
            pr: prefix,
            p: plugin
        };
    };

    function makeConfig(name) {
        return function () {
            return (config && config.config && config.config[name]) || {};
        };
    }

    handlers = {
        require: function (name) {
            return makeRequire(name);
        },
        exports: function (name) {
            var e = defined[name];
            if (typeof e !== 'undefined') {
                return e;
            } else {
                return (defined[name] = {});
            }
        },
        module: function (name) {
            return {
                id: name,
                uri: '',
                exports: defined[name],
                config: makeConfig(name)
            };
        }
    };

    main = function (name, deps, callback, relName) {
        var cjsModule, depName, ret, map, i,
            args = [],
            callbackType = typeof callback,
            usingExports;

        //Use name if no relName
        relName = relName || name;

        //Call the callback to define the module, if necessary.
        if (callbackType === 'undefined' || callbackType === 'function') {
            //Pull out the defined dependencies and pass the ordered
            //values to the callback.
            //Default to [require, exports, module] if no deps
            deps = !deps.length && callback.length ? ['require', 'exports', 'module'] : deps;
            for (i = 0; i < deps.length; i += 1) {
                map = makeMap(deps[i], relName);
                depName = map.f;

                //Fast path CommonJS standard dependencies.
                if (depName === "require") {
                    args[i] = handlers.require(name);
                } else if (depName === "exports") {
                    //CommonJS module spec 1.1
                    args[i] = handlers.exports(name);
                    usingExports = true;
                } else if (depName === "module") {
                    //CommonJS module spec 1.1
                    cjsModule = args[i] = handlers.module(name);
                } else if (hasProp(defined, depName) ||
                           hasProp(waiting, depName) ||
                           hasProp(defining, depName)) {
                    args[i] = callDep(depName);
                } else if (map.p) {
                    map.p.load(map.n, makeRequire(relName, true), makeLoad(depName), {});
                    args[i] = defined[depName];
                } else {
                    throw new Error(name + ' missing ' + depName);
                }
            }

            ret = callback ? callback.apply(defined[name], args) : undefined;

            if (name) {
                //If setting exports via "module" is in play,
                //favor that over return value and exports. After that,
                //favor a non-undefined return value over exports use.
                if (cjsModule && cjsModule.exports !== undef &&
                        cjsModule.exports !== defined[name]) {
                    defined[name] = cjsModule.exports;
                } else if (ret !== undef || !usingExports) {
                    //Use the return value from the function.
                    defined[name] = ret;
                }
            }
        } else if (name) {
            //May just be an object definition for the module. Only
            //worry about defining if have a module name.
            defined[name] = callback;
        }
    };

    requirejs = require = req = function (deps, callback, relName, forceSync, alt) {
        if (typeof deps === "string") {
            if (handlers[deps]) {
                //callback in this case is really relName
                return handlers[deps](callback);
            }
            //Just return the module wanted. In this scenario, the
            //deps arg is the module name, and second arg (if passed)
            //is just the relName.
            //Normalize module name, if it contains . or ..
            return callDep(makeMap(deps, callback).f);
        } else if (!deps.splice) {
            //deps is a config object, not an array.
            config = deps;
            if (config.deps) {
                req(config.deps, config.callback);
            }
            if (!callback) {
                return;
            }

            if (callback.splice) {
                //callback is an array, which means it is a dependency list.
                //Adjust args if there are dependencies
                deps = callback;
                callback = relName;
                relName = null;
            } else {
                deps = undef;
            }
        }

        //Support require(['a'])
        callback = callback || function () {};

        //If relName is a function, it is an errback handler,
        //so remove it.
        if (typeof relName === 'function') {
            relName = forceSync;
            forceSync = alt;
        }

        //Simulate async callback;
        if (forceSync) {
            main(undef, deps, callback, relName);
        } else {
            //Using a non-zero value because of concern for what old browsers
            //do, and latest browsers "upgrade" to 4 if lower value is used:
            //http://www.whatwg.org/specs/web-apps/current-work/multipage/timers.html#dom-windowtimers-settimeout:
            //If want a value immediately, use require('id') instead -- something
            //that works in almond on the global level, but not guaranteed and
            //unlikely to work in other AMD implementations.
            setTimeout(function () {
                main(undef, deps, callback, relName);
            }, 4);
        }

        return req;
    };

    /**
     * Just drops the config on the floor, but returns req in case
     * the config return value is used.
     */
    req.config = function (cfg) {
        return req(cfg);
    };

    /**
     * Expose module registry for debugging and tooling
     */
    requirejs._defined = defined;

    define = function (name, deps, callback) {

        //This module may not have dependencies
        if (!deps.splice) {
            //deps is not an array, so probably means
            //an object literal or factory function for
            //the value. Adjust args.
            callback = deps;
            deps = [];
        }

        if (!hasProp(defined, name) && !hasProp(waiting, name)) {
            waiting[name] = [name, deps, callback];
        }
    };

    define.amd = {
        jQuery: true
    };
}());

define("components/almond/almond.js", function(){});

define('jquery', [], function () {
    return jQuery;
});

define('jquery-private',['jquery'], function (jq) {
    return jq;
});

/**
 * @license RequireJS text 2.0.14 Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved.
 * Available via the MIT or new BSD license.
 * see: http://github.com/requirejs/text for details
 */
/*jslint regexp: true */
/*global require, XMLHttpRequest, ActiveXObject,
  define, window, process, Packages,
  java, location, Components, FileUtils */

define('text',['module'], function (module) {
    

    var text, fs, Cc, Ci, xpcIsWindows,
        progIds = ['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0'],
        xmlRegExp = /^\s*<\?xml(\s)+version=[\'\"](\d)*.(\d)*[\'\"](\s)*\?>/im,
        bodyRegExp = /<body[^>]*>\s*([\s\S]+)\s*<\/body>/im,
        hasLocation = typeof location !== 'undefined' && location.href,
        defaultProtocol = hasLocation && location.protocol && location.protocol.replace(/\:/, ''),
        defaultHostName = hasLocation && location.hostname,
        defaultPort = hasLocation && (location.port || undefined),
        buildMap = {},
        masterConfig = (module.config && module.config()) || {};

    text = {
        version: '2.0.14',

        strip: function (content) {
            //Strips <?xml ...?> declarations so that external SVG and XML
            //documents can be added to a document without worry. Also, if the string
            //is an HTML document, only the part inside the body tag is returned.
            if (content) {
                content = content.replace(xmlRegExp, "");
                var matches = content.match(bodyRegExp);
                if (matches) {
                    content = matches[1];
                }
            } else {
                content = "";
            }
            return content;
        },

        jsEscape: function (content) {
            return content.replace(/(['\\])/g, '\\$1')
                .replace(/[\f]/g, "\\f")
                .replace(/[\b]/g, "\\b")
                .replace(/[\n]/g, "\\n")
                .replace(/[\t]/g, "\\t")
                .replace(/[\r]/g, "\\r")
                .replace(/[\u2028]/g, "\\u2028")
                .replace(/[\u2029]/g, "\\u2029");
        },

        createXhr: masterConfig.createXhr || function () {
            //Would love to dump the ActiveX crap in here. Need IE 6 to die first.
            var xhr, i, progId;
            if (typeof XMLHttpRequest !== "undefined") {
                return new XMLHttpRequest();
            } else if (typeof ActiveXObject !== "undefined") {
                for (i = 0; i < 3; i += 1) {
                    progId = progIds[i];
                    try {
                        xhr = new ActiveXObject(progId);
                    } catch (e) {}

                    if (xhr) {
                        progIds = [progId];  // so faster next time
                        break;
                    }
                }
            }

            return xhr;
        },

        /**
         * Parses a resource name into its component parts. Resource names
         * look like: module/name.ext!strip, where the !strip part is
         * optional.
         * @param {String} name the resource name
         * @returns {Object} with properties "moduleName", "ext" and "strip"
         * where strip is a boolean.
         */
        parseName: function (name) {
            var modName, ext, temp,
                strip = false,
                index = name.lastIndexOf("."),
                isRelative = name.indexOf('./') === 0 ||
                             name.indexOf('../') === 0;

            if (index !== -1 && (!isRelative || index > 1)) {
                modName = name.substring(0, index);
                ext = name.substring(index + 1);
            } else {
                modName = name;
            }

            temp = ext || modName;
            index = temp.indexOf("!");
            if (index !== -1) {
                //Pull off the strip arg.
                strip = temp.substring(index + 1) === "strip";
                temp = temp.substring(0, index);
                if (ext) {
                    ext = temp;
                } else {
                    modName = temp;
                }
            }

            return {
                moduleName: modName,
                ext: ext,
                strip: strip
            };
        },

        xdRegExp: /^((\w+)\:)?\/\/([^\/\\]+)/,

        /**
         * Is an URL on another domain. Only works for browser use, returns
         * false in non-browser environments. Only used to know if an
         * optimized .js version of a text resource should be loaded
         * instead.
         * @param {String} url
         * @returns Boolean
         */
        useXhr: function (url, protocol, hostname, port) {
            var uProtocol, uHostName, uPort,
                match = text.xdRegExp.exec(url);
            if (!match) {
                return true;
            }
            uProtocol = match[2];
            uHostName = match[3];

            uHostName = uHostName.split(':');
            uPort = uHostName[1];
            uHostName = uHostName[0];

            return (!uProtocol || uProtocol === protocol) &&
                   (!uHostName || uHostName.toLowerCase() === hostname.toLowerCase()) &&
                   ((!uPort && !uHostName) || uPort === port);
        },

        finishLoad: function (name, strip, content, onLoad) {
            content = strip ? text.strip(content) : content;
            if (masterConfig.isBuild) {
                buildMap[name] = content;
            }
            onLoad(content);
        },

        load: function (name, req, onLoad, config) {
            //Name has format: some.module.filext!strip
            //The strip part is optional.
            //if strip is present, then that means only get the string contents
            //inside a body tag in an HTML string. For XML/SVG content it means
            //removing the <?xml ...?> declarations so the content can be inserted
            //into the current doc without problems.

            // Do not bother with the work if a build and text will
            // not be inlined.
            if (config && config.isBuild && !config.inlineText) {
                onLoad();
                return;
            }

            masterConfig.isBuild = config && config.isBuild;

            var parsed = text.parseName(name),
                nonStripName = parsed.moduleName +
                    (parsed.ext ? '.' + parsed.ext : ''),
                url = req.toUrl(nonStripName),
                useXhr = (masterConfig.useXhr) ||
                         text.useXhr;

            // Do not load if it is an empty: url
            if (url.indexOf('empty:') === 0) {
                onLoad();
                return;
            }

            //Load the text. Use XHR if possible and in a browser.
            if (!hasLocation || useXhr(url, defaultProtocol, defaultHostName, defaultPort)) {
                text.get(url, function (content) {
                    text.finishLoad(name, parsed.strip, content, onLoad);
                }, function (err) {
                    if (onLoad.error) {
                        onLoad.error(err);
                    }
                });
            } else {
                //Need to fetch the resource across domains. Assume
                //the resource has been optimized into a JS module. Fetch
                //by the module name + extension, but do not include the
                //!strip part to avoid file system issues.
                req([nonStripName], function (content) {
                    text.finishLoad(parsed.moduleName + '.' + parsed.ext,
                                    parsed.strip, content, onLoad);
                });
            }
        },

        write: function (pluginName, moduleName, write, config) {
            if (buildMap.hasOwnProperty(moduleName)) {
                var content = text.jsEscape(buildMap[moduleName]);
                write.asModule(pluginName + "!" + moduleName,
                               "define(function () { return '" +
                                   content +
                               "';});\n");
            }
        },

        writeFile: function (pluginName, moduleName, req, write, config) {
            var parsed = text.parseName(moduleName),
                extPart = parsed.ext ? '.' + parsed.ext : '',
                nonStripName = parsed.moduleName + extPart,
                //Use a '.js' file name so that it indicates it is a
                //script that can be loaded across domains.
                fileName = req.toUrl(parsed.moduleName + extPart) + '.js';

            //Leverage own load() method to load plugin value, but only
            //write out values that do not have the strip argument,
            //to avoid any potential issues with ! in file names.
            text.load(nonStripName, req, function (value) {
                //Use own write() method to construct full module value.
                //But need to create shell that translates writeFile's
                //write() to the right interface.
                var textWrite = function (contents) {
                    return write(fileName, contents);
                };
                textWrite.asModule = function (moduleName, contents) {
                    return write.asModule(moduleName, fileName, contents);
                };

                text.write(pluginName, nonStripName, textWrite, config);
            }, config);
        }
    };

    if (masterConfig.env === 'node' || (!masterConfig.env &&
            typeof process !== "undefined" &&
            process.versions &&
            !!process.versions.node &&
            !process.versions['node-webkit'] &&
            !process.versions['atom-shell'])) {
        //Using special require.nodeRequire, something added by r.js.
        fs = require.nodeRequire('fs');

        text.get = function (url, callback, errback) {
            try {
                var file = fs.readFileSync(url, 'utf8');
                //Remove BOM (Byte Mark Order) from utf8 files if it is there.
                if (file[0] === '\uFEFF') {
                    file = file.substring(1);
                }
                callback(file);
            } catch (e) {
                if (errback) {
                    errback(e);
                }
            }
        };
    } else if (masterConfig.env === 'xhr' || (!masterConfig.env &&
            text.createXhr())) {
        text.get = function (url, callback, errback, headers) {
            var xhr = text.createXhr(), header;
            xhr.open('GET', url, true);

            //Allow plugins direct access to xhr headers
            if (headers) {
                for (header in headers) {
                    if (headers.hasOwnProperty(header)) {
                        xhr.setRequestHeader(header.toLowerCase(), headers[header]);
                    }
                }
            }

            //Allow overrides specified in config
            if (masterConfig.onXhr) {
                masterConfig.onXhr(xhr, url);
            }

            xhr.onreadystatechange = function (evt) {
                var status, err;
                //Do not explicitly handle errors, those should be
                //visible via console output in the browser.
                if (xhr.readyState === 4) {
                    status = xhr.status || 0;
                    if (status > 399 && status < 600) {
                        //An http 4xx or 5xx error. Signal an error.
                        err = new Error(url + ' HTTP status: ' + status);
                        err.xhr = xhr;
                        if (errback) {
                            errback(err);
                        }
                    } else {
                        callback(xhr.responseText);
                    }

                    if (masterConfig.onXhrComplete) {
                        masterConfig.onXhrComplete(xhr, url);
                    }
                }
            };
            xhr.send(null);
        };
    } else if (masterConfig.env === 'rhino' || (!masterConfig.env &&
            typeof Packages !== 'undefined' && typeof java !== 'undefined')) {
        //Why Java, why is this so awkward?
        text.get = function (url, callback) {
            var stringBuffer, line,
                encoding = "utf-8",
                file = new java.io.File(url),
                lineSeparator = java.lang.System.getProperty("line.separator"),
                input = new java.io.BufferedReader(new java.io.InputStreamReader(new java.io.FileInputStream(file), encoding)),
                content = '';
            try {
                stringBuffer = new java.lang.StringBuffer();
                line = input.readLine();

                // Byte Order Mark (BOM) - The Unicode Standard, version 3.0, page 324
                // http://www.unicode.org/faq/utf_bom.html

                // Note that when we use utf-8, the BOM should appear as "EF BB BF", but it doesn't due to this bug in the JDK:
                // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4508058
                if (line && line.length() && line.charAt(0) === 0xfeff) {
                    // Eat the BOM, since we've already found the encoding on this file,
                    // and we plan to concatenating this buffer with others; the BOM should
                    // only appear at the top of a file.
                    line = line.substring(1);
                }

                if (line !== null) {
                    stringBuffer.append(line);
                }

                while ((line = input.readLine()) !== null) {
                    stringBuffer.append(lineSeparator);
                    stringBuffer.append(line);
                }
                //Make sure we return a JavaScript string and not a Java string.
                content = String(stringBuffer.toString()); //String
            } finally {
                input.close();
            }
            callback(content);
        };
    } else if (masterConfig.env === 'xpconnect' || (!masterConfig.env &&
            typeof Components !== 'undefined' && Components.classes &&
            Components.interfaces)) {
        //Avert your gaze!
        Cc = Components.classes;
        Ci = Components.interfaces;
        Components.utils['import']('resource://gre/modules/FileUtils.jsm');
        xpcIsWindows = ('@mozilla.org/windows-registry-key;1' in Cc);

        text.get = function (url, callback) {
            var inStream, convertStream, fileObj,
                readData = {};

            if (xpcIsWindows) {
                url = url.replace(/\//g, '\\');
            }

            fileObj = new FileUtils.File(url);

            //XPCOM, you so crazy
            try {
                inStream = Cc['@mozilla.org/network/file-input-stream;1']
                           .createInstance(Ci.nsIFileInputStream);
                inStream.init(fileObj, 1, 0, false);

                convertStream = Cc['@mozilla.org/intl/converter-input-stream;1']
                                .createInstance(Ci.nsIConverterInputStream);
                convertStream.init(inStream, "utf-8", inStream.available(),
                Ci.nsIConverterInputStream.DEFAULT_REPLACEMENT_CHARACTER);

                convertStream.readString(inStream.available(), readData);
                convertStream.close();
                inStream.close();
                callback(readData.value);
            } catch (e) {
                throw new Error((fileObj && fileObj.path || '') + ': ' + e);
            }
        };
    }
    return text;
});

//     Underscore.js 1.6.0
//     http://underscorejs.org
//     (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
//     Underscore may be freely distributed under the MIT license.

(function() {

  // Baseline setup
  // --------------

  // Establish the root object, `window` in the browser, or `exports` on the server.
  var root = this;

  // Save the previous value of the `_` variable.
  var previousUnderscore = root._;

  // Establish the object that gets returned to break out of a loop iteration.
  var breaker = {};

  // Save bytes in the minified (but not gzipped) version:
  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;

  // Create quick reference variables for speed access to core prototypes.
  var
    push             = ArrayProto.push,
    slice            = ArrayProto.slice,
    concat           = ArrayProto.concat,
    toString         = ObjProto.toString,
    hasOwnProperty   = ObjProto.hasOwnProperty;

  // All **ECMAScript 5** native function implementations that we hope to use
  // are declared here.
  var
    nativeForEach      = ArrayProto.forEach,
    nativeMap          = ArrayProto.map,
    nativeReduce       = ArrayProto.reduce,
    nativeReduceRight  = ArrayProto.reduceRight,
    nativeFilter       = ArrayProto.filter,
    nativeEvery        = ArrayProto.every,
    nativeSome         = ArrayProto.some,
    nativeIndexOf      = ArrayProto.indexOf,
    nativeLastIndexOf  = ArrayProto.lastIndexOf,
    nativeIsArray      = Array.isArray,
    nativeKeys         = Object.keys,
    nativeBind         = FuncProto.bind;

  // Create a safe reference to the Underscore object for use below.
  var _ = function(obj) {
    if (obj instanceof _) return obj;
    if (!(this instanceof _)) return new _(obj);
    this._wrapped = obj;
  };

  // Export the Underscore object for **Node.js**, with
  // backwards-compatibility for the old `require()` API. If we're in
  // the browser, add `_` as a global object via a string identifier,
  // for Closure Compiler "advanced" mode.
  if (typeof exports !== 'undefined') {
    if (typeof module !== 'undefined' && module.exports) {
      exports = module.exports = _;
    }
    exports._ = _;
  } else {
    root._ = _;
  }

  // Current version.
  _.VERSION = '1.6.0';

  // Collection Functions
  // --------------------

  // The cornerstone, an `each` implementation, aka `forEach`.
  // Handles objects with the built-in `forEach`, arrays, and raw objects.
  // Delegates to **ECMAScript 5**'s native `forEach` if available.
  var each = _.each = _.forEach = function(obj, iterator, context) {
    if (obj == null) return obj;
    if (nativeForEach && obj.forEach === nativeForEach) {
      obj.forEach(iterator, context);
    } else if (obj.length === +obj.length) {
      for (var i = 0, length = obj.length; i < length; i++) {
        if (iterator.call(context, obj[i], i, obj) === breaker) return;
      }
    } else {
      var keys = _.keys(obj);
      for (var i = 0, length = keys.length; i < length; i++) {
        if (iterator.call(context, obj[keys[i]], keys[i], obj) === breaker) return;
      }
    }
    return obj;
  };

  // Return the results of applying the iterator to each element.
  // Delegates to **ECMAScript 5**'s native `map` if available.
  _.map = _.collect = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
    each(obj, function(value, index, list) {
      results.push(iterator.call(context, value, index, list));
    });
    return results;
  };

  var reduceError = 'Reduce of empty array with no initial value';

  // **Reduce** builds up a single result from a list of values, aka `inject`,
  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
    var initial = arguments.length > 2;
    if (obj == null) obj = [];
    if (nativeReduce && obj.reduce === nativeReduce) {
      if (context) iterator = _.bind(iterator, context);
      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
    }
    each(obj, function(value, index, list) {
      if (!initial) {
        memo = value;
        initial = true;
      } else {
        memo = iterator.call(context, memo, value, index, list);
      }
    });
    if (!initial) throw new TypeError(reduceError);
    return memo;
  };

  // The right-associative version of reduce, also known as `foldr`.
  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
    var initial = arguments.length > 2;
    if (obj == null) obj = [];
    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
      if (context) iterator = _.bind(iterator, context);
      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
    }
    var length = obj.length;
    if (length !== +length) {
      var keys = _.keys(obj);
      length = keys.length;
    }
    each(obj, function(value, index, list) {
      index = keys ? keys[--length] : --length;
      if (!initial) {
        memo = obj[index];
        initial = true;
      } else {
        memo = iterator.call(context, memo, obj[index], index, list);
      }
    });
    if (!initial) throw new TypeError(reduceError);
    return memo;
  };

  // Return the first value which passes a truth test. Aliased as `detect`.
  _.find = _.detect = function(obj, predicate, context) {
    var result;
    any(obj, function(value, index, list) {
      if (predicate.call(context, value, index, list)) {
        result = value;
        return true;
      }
    });
    return result;
  };

  // Return all the elements that pass a truth test.
  // Delegates to **ECMAScript 5**'s native `filter` if available.
  // Aliased as `select`.
  _.filter = _.select = function(obj, predicate, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(predicate, context);
    each(obj, function(value, index, list) {
      if (predicate.call(context, value, index, list)) results.push(value);
    });
    return results;
  };

  // Return all the elements for which a truth test fails.
  _.reject = function(obj, predicate, context) {
    return _.filter(obj, function(value, index, list) {
      return !predicate.call(context, value, index, list);
    }, context);
  };

  // Determine whether all of the elements match a truth test.
  // Delegates to **ECMAScript 5**'s native `every` if available.
  // Aliased as `all`.
  _.every = _.all = function(obj, predicate, context) {
    predicate || (predicate = _.identity);
    var result = true;
    if (obj == null) return result;
    if (nativeEvery && obj.every === nativeEvery) return obj.every(predicate, context);
    each(obj, function(value, index, list) {
      if (!(result = result && predicate.call(context, value, index, list))) return breaker;
    });
    return !!result;
  };

  // Determine if at least one element in the object matches a truth test.
  // Delegates to **ECMAScript 5**'s native `some` if available.
  // Aliased as `any`.
  var any = _.some = _.any = function(obj, predicate, context) {
    predicate || (predicate = _.identity);
    var result = false;
    if (obj == null) return result;
    if (nativeSome && obj.some === nativeSome) return obj.some(predicate, context);
    each(obj, function(value, index, list) {
      if (result || (result = predicate.call(context, value, index, list))) return breaker;
    });
    return !!result;
  };

  // Determine if the array or object contains a given value (using `===`).
  // Aliased as `include`.
  _.contains = _.include = function(obj, target) {
    if (obj == null) return false;
    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
    return any(obj, function(value) {
      return value === target;
    });
  };

  // Invoke a method (with arguments) on every item in a collection.
  _.invoke = function(obj, method) {
    var args = slice.call(arguments, 2);
    var isFunc = _.isFunction(method);
    return _.map(obj, function(value) {
      return (isFunc ? method : value[method]).apply(value, args);
    });
  };

  // Convenience version of a common use case of `map`: fetching a property.
  _.pluck = function(obj, key) {
    return _.map(obj, _.property(key));
  };

  // Convenience version of a common use case of `filter`: selecting only objects
  // containing specific `key:value` pairs.
  _.where = function(obj, attrs) {
    return _.filter(obj, _.matches(attrs));
  };

  // Convenience version of a common use case of `find`: getting the first object
  // containing specific `key:value` pairs.
  _.findWhere = function(obj, attrs) {
    return _.find(obj, _.matches(attrs));
  };

  // Return the maximum element or (element-based computation).
  // Can't optimize arrays of integers longer than 65,535 elements.
  // See [WebKit Bug 80797](https://bugs.webkit.org/show_bug.cgi?id=80797)
  _.max = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
      return Math.max.apply(Math, obj);
    }
    var result = -Infinity, lastComputed = -Infinity;
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      if (computed > lastComputed) {
        result = value;
        lastComputed = computed;
      }
    });
    return result;
  };

  // Return the minimum element (or element-based computation).
  _.min = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
      return Math.min.apply(Math, obj);
    }
    var result = Infinity, lastComputed = Infinity;
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      if (computed < lastComputed) {
        result = value;
        lastComputed = computed;
      }
    });
    return result;
  };

  // Shuffle an array, using the modern version of the
  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
  _.shuffle = function(obj) {
    var rand;
    var index = 0;
    var shuffled = [];
    each(obj, function(value) {
      rand = _.random(index++);
      shuffled[index - 1] = shuffled[rand];
      shuffled[rand] = value;
    });
    return shuffled;
  };

  // Sample **n** random values from a collection.
  // If **n** is not specified, returns a single random element.
  // The internal `guard` argument allows it to work with `map`.
  _.sample = function(obj, n, guard) {
    if (n == null || guard) {
      if (obj.length !== +obj.length) obj = _.values(obj);
      return obj[_.random(obj.length - 1)];
    }
    return _.shuffle(obj).slice(0, Math.max(0, n));
  };

  // An internal function to generate lookup iterators.
  var lookupIterator = function(value) {
    if (value == null) return _.identity;
    if (_.isFunction(value)) return value;
    return _.property(value);
  };

  // Sort the object's values by a criterion produced by an iterator.
  _.sortBy = function(obj, iterator, context) {
    iterator = lookupIterator(iterator);
    return _.pluck(_.map(obj, function(value, index, list) {
      return {
        value: value,
        index: index,
        criteria: iterator.call(context, value, index, list)
      };
    }).sort(function(left, right) {
      var a = left.criteria;
      var b = right.criteria;
      if (a !== b) {
        if (a > b || a === void 0) return 1;
        if (a < b || b === void 0) return -1;
      }
      return left.index - right.index;
    }), 'value');
  };

  // An internal function used for aggregate "group by" operations.
  var group = function(behavior) {
    return function(obj, iterator, context) {
      var result = {};
      iterator = lookupIterator(iterator);
      each(obj, function(value, index) {
        var key = iterator.call(context, value, index, obj);
        behavior(result, key, value);
      });
      return result;
    };
  };

  // Groups the object's values by a criterion. Pass either a string attribute
  // to group by, or a function that returns the criterion.
  _.groupBy = group(function(result, key, value) {
    _.has(result, key) ? result[key].push(value) : result[key] = [value];
  });

  // Indexes the object's values by a criterion, similar to `groupBy`, but for
  // when you know that your index values will be unique.
  _.indexBy = group(function(result, key, value) {
    result[key] = value;
  });

  // Counts instances of an object that group by a certain criterion. Pass
  // either a string attribute to count by, or a function that returns the
  // criterion.
  _.countBy = group(function(result, key) {
    _.has(result, key) ? result[key]++ : result[key] = 1;
  });

  // Use a comparator function to figure out the smallest index at which
  // an object should be inserted so as to maintain order. Uses binary search.
  _.sortedIndex = function(array, obj, iterator, context) {
    iterator = lookupIterator(iterator);
    var value = iterator.call(context, obj);
    var low = 0, high = array.length;
    while (low < high) {
      var mid = (low + high) >>> 1;
      iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
    }
    return low;
  };

  // Safely create a real, live array from anything iterable.
  _.toArray = function(obj) {
    if (!obj) return [];
    if (_.isArray(obj)) return slice.call(obj);
    if (obj.length === +obj.length) return _.map(obj, _.identity);
    return _.values(obj);
  };

  // Return the number of elements in an object.
  _.size = function(obj) {
    if (obj == null) return 0;
    return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
  };

  // Array Functions
  // ---------------

  // Get the first element of an array. Passing **n** will return the first N
  // values in the array. Aliased as `head` and `take`. The **guard** check
  // allows it to work with `_.map`.
  _.first = _.head = _.take = function(array, n, guard) {
    if (array == null) return void 0;
    if ((n == null) || guard) return array[0];
    if (n < 0) return [];
    return slice.call(array, 0, n);
  };

  // Returns everything but the last entry of the array. Especially useful on
  // the arguments object. Passing **n** will return all the values in
  // the array, excluding the last N. The **guard** check allows it to work with
  // `_.map`.
  _.initial = function(array, n, guard) {
    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
  };

  // Get the last element of an array. Passing **n** will return the last N
  // values in the array. The **guard** check allows it to work with `_.map`.
  _.last = function(array, n, guard) {
    if (array == null) return void 0;
    if ((n == null) || guard) return array[array.length - 1];
    return slice.call(array, Math.max(array.length - n, 0));
  };

  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
  // Especially useful on the arguments object. Passing an **n** will return
  // the rest N values in the array. The **guard**
  // check allows it to work with `_.map`.
  _.rest = _.tail = _.drop = function(array, n, guard) {
    return slice.call(array, (n == null) || guard ? 1 : n);
  };

  // Trim out all falsy values from an array.
  _.compact = function(array) {
    return _.filter(array, _.identity);
  };

  // Internal implementation of a recursive `flatten` function.
  var flatten = function(input, shallow, output) {
    if (shallow && _.every(input, _.isArray)) {
      return concat.apply(output, input);
    }
    each(input, function(value) {
      if (_.isArray(value) || _.isArguments(value)) {
        shallow ? push.apply(output, value) : flatten(value, shallow, output);
      } else {
        output.push(value);
      }
    });
    return output;
  };

  // Flatten out an array, either recursively (by default), or just one level.
  _.flatten = function(array, shallow) {
    return flatten(array, shallow, []);
  };

  // Return a version of the array that does not contain the specified value(s).
  _.without = function(array) {
    return _.difference(array, slice.call(arguments, 1));
  };

  // Split an array into two arrays: one whose elements all satisfy the given
  // predicate, and one whose elements all do not satisfy the predicate.
  _.partition = function(array, predicate) {
    var pass = [], fail = [];
    each(array, function(elem) {
      (predicate(elem) ? pass : fail).push(elem);
    });
    return [pass, fail];
  };

  // Produce a duplicate-free version of the array. If the array has already
  // been sorted, you have the option of using a faster algorithm.
  // Aliased as `unique`.
  _.uniq = _.unique = function(array, isSorted, iterator, context) {
    if (_.isFunction(isSorted)) {
      context = iterator;
      iterator = isSorted;
      isSorted = false;
    }
    var initial = iterator ? _.map(array, iterator, context) : array;
    var results = [];
    var seen = [];
    each(initial, function(value, index) {
      if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) {
        seen.push(value);
        results.push(array[index]);
      }
    });
    return results;
  };

  // Produce an array that contains the union: each distinct element from all of
  // the passed-in arrays.
  _.union = function() {
    return _.uniq(_.flatten(arguments, true));
  };

  // Produce an array that contains every item shared between all the
  // passed-in arrays.
  _.intersection = function(array) {
    var rest = slice.call(arguments, 1);
    return _.filter(_.uniq(array), function(item) {
      return _.every(rest, function(other) {
        return _.contains(other, item);
      });
    });
  };

  // Take the difference between one array and a number of other arrays.
  // Only the elements present in just the first array will remain.
  _.difference = function(array) {
    var rest = concat.apply(ArrayProto, slice.call(arguments, 1));
    return _.filter(array, function(value){ return !_.contains(rest, value); });
  };

  // Zip together multiple lists into a single array -- elements that share
  // an index go together.
  _.zip = function() {
    var length = _.max(_.pluck(arguments, 'length').concat(0));
    var results = new Array(length);
    for (var i = 0; i < length; i++) {
      results[i] = _.pluck(arguments, '' + i);
    }
    return results;
  };

  // Converts lists into objects. Pass either a single array of `[key, value]`
  // pairs, or two parallel arrays of the same length -- one of keys, and one of
  // the corresponding values.
  _.object = function(list, values) {
    if (list == null) return {};
    var result = {};
    for (var i = 0, length = list.length; i < length; i++) {
      if (values) {
        result[list[i]] = values[i];
      } else {
        result[list[i][0]] = list[i][1];
      }
    }
    return result;
  };

  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
  // we need this function. Return the position of the first occurrence of an
  // item in an array, or -1 if the item is not included in the array.
  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
  // If the array is large and already in sort order, pass `true`
  // for **isSorted** to use binary search.
  _.indexOf = function(array, item, isSorted) {
    if (array == null) return -1;
    var i = 0, length = array.length;
    if (isSorted) {
      if (typeof isSorted == 'number') {
        i = (isSorted < 0 ? Math.max(0, length + isSorted) : isSorted);
      } else {
        i = _.sortedIndex(array, item);
        return array[i] === item ? i : -1;
      }
    }
    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
    for (; i < length; i++) if (array[i] === item) return i;
    return -1;
  };

  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
  _.lastIndexOf = function(array, item, from) {
    if (array == null) return -1;
    var hasIndex = from != null;
    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
      return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
    }
    var i = (hasIndex ? from : array.length);
    while (i--) if (array[i] === item) return i;
    return -1;
  };

  // Generate an integer Array containing an arithmetic progression. A port of
  // the native Python `range()` function. See
  // [the Python documentation](http://docs.python.org/library/functions.html#range).
  _.range = function(start, stop, step) {
    if (arguments.length <= 1) {
      stop = start || 0;
      start = 0;
    }
    step = arguments[2] || 1;

    var length = Math.max(Math.ceil((stop - start) / step), 0);
    var idx = 0;
    var range = new Array(length);

    while(idx < length) {
      range[idx++] = start;
      start += step;
    }

    return range;
  };

  // Function (ahem) Functions
  // ------------------

  // Reusable constructor function for prototype setting.
  var ctor = function(){};

  // Create a function bound to a given object (assigning `this`, and arguments,
  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
  // available.
  _.bind = function(func, context) {
    var args, bound;
    if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
    if (!_.isFunction(func)) throw new TypeError;
    args = slice.call(arguments, 2);
    return bound = function() {
      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
      ctor.prototype = func.prototype;
      var self = new ctor;
      ctor.prototype = null;
      var result = func.apply(self, args.concat(slice.call(arguments)));
      if (Object(result) === result) return result;
      return self;
    };
  };

  // Partially apply a function by creating a version that has had some of its
  // arguments pre-filled, without changing its dynamic `this` context. _ acts
  // as a placeholder, allowing any combination of arguments to be pre-filled.
  _.partial = function(func) {
    var boundArgs = slice.call(arguments, 1);
    return function() {
      var position = 0;
      var args = boundArgs.slice();
      for (var i = 0, length = args.length; i < length; i++) {
        if (args[i] === _) args[i] = arguments[position++];
      }
      while (position < arguments.length) args.push(arguments[position++]);
      return func.apply(this, args);
    };
  };

  // Bind a number of an object's methods to that object. Remaining arguments
  // are the method names to be bound. Useful for ensuring that all callbacks
  // defined on an object belong to it.
  _.bindAll = function(obj) {
    var funcs = slice.call(arguments, 1);
    if (funcs.length === 0) throw new Error('bindAll must be passed function names');
    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
    return obj;
  };

  // Memoize an expensive function by storing its results.
  _.memoize = function(func, hasher) {
    var memo = {};
    hasher || (hasher = _.identity);
    return function() {
      var key = hasher.apply(this, arguments);
      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
    };
  };

  // Delays a function for the given number of milliseconds, and then calls
  // it with the arguments supplied.
  _.delay = function(func, wait) {
    var args = slice.call(arguments, 2);
    return setTimeout(function(){ return func.apply(null, args); }, wait);
  };

  // Defers a function, scheduling it to run after the current call stack has
  // cleared.
  _.defer = function(func) {
    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
  };

  // Returns a function, that, when invoked, will only be triggered at most once
  // during a given window of time. Normally, the throttled function will run
  // as much as it can, without ever going more than once per `wait` duration;
  // but if you'd like to disable the execution on the leading edge, pass
  // `{leading: false}`. To disable execution on the trailing edge, ditto.
  _.throttle = function(func, wait, options) {
    var context, args, result;
    var timeout = null;
    var previous = 0;
    options || (options = {});
    var later = function() {
      previous = options.leading === false ? 0 : _.now();
      timeout = null;
      result = func.apply(context, args);
      context = args = null;
    };
    return function() {
      var now = _.now();
      if (!previous && options.leading === false) previous = now;
      var remaining = wait - (now - previous);
      context = this;
      args = arguments;
      if (remaining <= 0) {
        clearTimeout(timeout);
        timeout = null;
        previous = now;
        result = func.apply(context, args);
        context = args = null;
      } else if (!timeout && options.trailing !== false) {
        timeout = setTimeout(later, remaining);
      }
      return result;
    };
  };

  // Returns a function, that, as long as it continues to be invoked, will not
  // be triggered. The function will be called after it stops being called for
  // N milliseconds. If `immediate` is passed, trigger the function on the
  // leading edge, instead of the trailing.
  _.debounce = function(func, wait, immediate) {
    var timeout, args, context, timestamp, result;

    var later = function() {
      var last = _.now() - timestamp;
      if (last < wait) {
        timeout = setTimeout(later, wait - last);
      } else {
        timeout = null;
        if (!immediate) {
          result = func.apply(context, args);
          context = args = null;
        }
      }
    };

    return function() {
      context = this;
      args = arguments;
      timestamp = _.now();
      var callNow = immediate && !timeout;
      if (!timeout) {
        timeout = setTimeout(later, wait);
      }
      if (callNow) {
        result = func.apply(context, args);
        context = args = null;
      }

      return result;
    };
  };

  // Returns a function that will be executed at most one time, no matter how
  // often you call it. Useful for lazy initialization.
  _.once = function(func) {
    var ran = false, memo;
    return function() {
      if (ran) return memo;
      ran = true;
      memo = func.apply(this, arguments);
      func = null;
      return memo;
    };
  };

  // Returns the first function passed as an argument to the second,
  // allowing you to adjust arguments, run code before and after, and
  // conditionally execute the original function.
  _.wrap = function(func, wrapper) {
    return _.partial(wrapper, func);
  };

  // Returns a function that is the composition of a list of functions, each
  // consuming the return value of the function that follows.
  _.compose = function() {
    var funcs = arguments;
    return function() {
      var args = arguments;
      for (var i = funcs.length - 1; i >= 0; i--) {
        args = [funcs[i].apply(this, args)];
      }
      return args[0];
    };
  };

  // Returns a function that will only be executed after being called N times.
  _.after = function(times, func) {
    return function() {
      if (--times < 1) {
        return func.apply(this, arguments);
      }
    };
  };

  // Object Functions
  // ----------------

  // Retrieve the names of an object's properties.
  // Delegates to **ECMAScript 5**'s native `Object.keys`
  _.keys = function(obj) {
    if (!_.isObject(obj)) return [];
    if (nativeKeys) return nativeKeys(obj);
    var keys = [];
    for (var key in obj) if (_.has(obj, key)) keys.push(key);
    return keys;
  };

  // Retrieve the values of an object's properties.
  _.values = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var values = new Array(length);
    for (var i = 0; i < length; i++) {
      values[i] = obj[keys[i]];
    }
    return values;
  };

  // Convert an object into a list of `[key, value]` pairs.
  _.pairs = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var pairs = new Array(length);
    for (var i = 0; i < length; i++) {
      pairs[i] = [keys[i], obj[keys[i]]];
    }
    return pairs;
  };

  // Invert the keys and values of an object. The values must be serializable.
  _.invert = function(obj) {
    var result = {};
    var keys = _.keys(obj);
    for (var i = 0, length = keys.length; i < length; i++) {
      result[obj[keys[i]]] = keys[i];
    }
    return result;
  };

  // Return a sorted list of the function names available on the object.
  // Aliased as `methods`
  _.functions = _.methods = function(obj) {
    var names = [];
    for (var key in obj) {
      if (_.isFunction(obj[key])) names.push(key);
    }
    return names.sort();
  };

  // Extend a given object with all the properties in passed-in object(s).
  _.extend = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      if (source) {
        for (var prop in source) {
          obj[prop] = source[prop];
        }
      }
    });
    return obj;
  };

  // Return a copy of the object only containing the whitelisted properties.
  _.pick = function(obj) {
    var copy = {};
    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
    each(keys, function(key) {
      if (key in obj) copy[key] = obj[key];
    });
    return copy;
  };

   // Return a copy of the object without the blacklisted properties.
  _.omit = function(obj) {
    var copy = {};
    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
    for (var key in obj) {
      if (!_.contains(keys, key)) copy[key] = obj[key];
    }
    return copy;
  };

  // Fill in a given object with default properties.
  _.defaults = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      if (source) {
        for (var prop in source) {
          if (obj[prop] === void 0) obj[prop] = source[prop];
        }
      }
    });
    return obj;
  };

  // Create a (shallow-cloned) duplicate of an object.
  _.clone = function(obj) {
    if (!_.isObject(obj)) return obj;
    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
  };

  // Invokes interceptor with the obj, and then returns obj.
  // The primary purpose of this method is to "tap into" a method chain, in
  // order to perform operations on intermediate results within the chain.
  _.tap = function(obj, interceptor) {
    interceptor(obj);
    return obj;
  };

  // Internal recursive comparison function for `isEqual`.
  var eq = function(a, b, aStack, bStack) {
    // Identical objects are equal. `0 === -0`, but they aren't identical.
    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
    if (a === b) return a !== 0 || 1 / a == 1 / b;
    // A strict comparison is necessary because `null == undefined`.
    if (a == null || b == null) return a === b;
    // Unwrap any wrapped objects.
    if (a instanceof _) a = a._wrapped;
    if (b instanceof _) b = b._wrapped;
    // Compare `[[Class]]` names.
    var className = toString.call(a);
    if (className != toString.call(b)) return false;
    switch (className) {
      // Strings, numbers, dates, and booleans are compared by value.
      case '[object String]':
        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
        // equivalent to `new String("5")`.
        return a == String(b);
      case '[object Number]':
        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
        // other numeric values.
        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
      case '[object Date]':
      case '[object Boolean]':
        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
        // millisecond representations. Note that invalid dates with millisecond representations
        // of `NaN` are not equivalent.
        return +a == +b;
      // RegExps are compared by their source patterns and flags.
      case '[object RegExp]':
        return a.source == b.source &&
               a.global == b.global &&
               a.multiline == b.multiline &&
               a.ignoreCase == b.ignoreCase;
    }
    if (typeof a != 'object' || typeof b != 'object') return false;
    // Assume equality for cyclic structures. The algorithm for detecting cyclic
    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
    var length = aStack.length;
    while (length--) {
      // Linear search. Performance is inversely proportional to the number of
      // unique nested structures.
      if (aStack[length] == a) return bStack[length] == b;
    }
    // Objects with different constructors are not equivalent, but `Object`s
    // from different frames are.
    var aCtor = a.constructor, bCtor = b.constructor;
    if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
                             _.isFunction(bCtor) && (bCtor instanceof bCtor))
                        && ('constructor' in a && 'constructor' in b)) {
      return false;
    }
    // Add the first object to the stack of traversed objects.
    aStack.push(a);
    bStack.push(b);
    var size = 0, result = true;
    // Recursively compare objects and arrays.
    if (className == '[object Array]') {
      // Compare array lengths to determine if a deep comparison is necessary.
      size = a.length;
      result = size == b.length;
      if (result) {
        // Deep compare the contents, ignoring non-numeric properties.
        while (size--) {
          if (!(result = eq(a[size], b[size], aStack, bStack))) break;
        }
      }
    } else {
      // Deep compare objects.
      for (var key in a) {
        if (_.has(a, key)) {
          // Count the expected number of properties.
          size++;
          // Deep compare each member.
          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
        }
      }
      // Ensure that both objects contain the same number of properties.
      if (result) {
        for (key in b) {
          if (_.has(b, key) && !(size--)) break;
        }
        result = !size;
      }
    }
    // Remove the first object from the stack of traversed objects.
    aStack.pop();
    bStack.pop();
    return result;
  };

  // Perform a deep comparison to check if two objects are equal.
  _.isEqual = function(a, b) {
    return eq(a, b, [], []);
  };

  // Is a given array, string, or object empty?
  // An "empty" object has no enumerable own-properties.
  _.isEmpty = function(obj) {
    if (obj == null) return true;
    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
    for (var key in obj) if (_.has(obj, key)) return false;
    return true;
  };

  // Is a given value a DOM element?
  _.isElement = function(obj) {
    return !!(obj && obj.nodeType === 1);
  };

  // Is a given value an array?
  // Delegates to ECMA5's native Array.isArray
  _.isArray = nativeIsArray || function(obj) {
    return toString.call(obj) == '[object Array]';
  };

  // Is a given variable an object?
  _.isObject = function(obj) {
    return obj === Object(obj);
  };

  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
  each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
    _['is' + name] = function(obj) {
      return toString.call(obj) == '[object ' + name + ']';
    };
  });

  // Define a fallback version of the method in browsers (ahem, IE), where
  // there isn't any inspectable "Arguments" type.
  if (!_.isArguments(arguments)) {
    _.isArguments = function(obj) {
      return !!(obj && _.has(obj, 'callee'));
    };
  }

  // Optimize `isFunction` if appropriate.
  if (typeof (/./) !== 'function') {
    _.isFunction = function(obj) {
      return typeof obj === 'function';
    };
  }

  // Is a given object a finite number?
  _.isFinite = function(obj) {
    return isFinite(obj) && !isNaN(parseFloat(obj));
  };

  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
  _.isNaN = function(obj) {
    return _.isNumber(obj) && obj != +obj;
  };

  // Is a given value a boolean?
  _.isBoolean = function(obj) {
    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
  };

  // Is a given value equal to null?
  _.isNull = function(obj) {
    return obj === null;
  };

  // Is a given variable undefined?
  _.isUndefined = function(obj) {
    return obj === void 0;
  };

  // Shortcut function for checking if an object has a given property directly
  // on itself (in other words, not on a prototype).
  _.has = function(obj, key) {
    return hasOwnProperty.call(obj, key);
  };

  // Utility Functions
  // -----------------

  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
  // previous owner. Returns a reference to the Underscore object.
  _.noConflict = function() {
    root._ = previousUnderscore;
    return this;
  };

  // Keep the identity function around for default iterators.
  _.identity = function(value) {
    return value;
  };

  _.constant = function(value) {
    return function () {
      return value;
    };
  };

  _.property = function(key) {
    return function(obj) {
      return obj[key];
    };
  };

  // Returns a predicate for checking whether an object has a given set of `key:value` pairs.
  _.matches = function(attrs) {
    return function(obj) {
      if (obj === attrs) return true; //avoid comparing an object to itself.
      for (var key in attrs) {
        if (attrs[key] !== obj[key])
          return false;
      }
      return true;
    }
  };

  // Run a function **n** times.
  _.times = function(n, iterator, context) {
    var accum = Array(Math.max(0, n));
    for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
    return accum;
  };

  // Return a random integer between min and max (inclusive).
  _.random = function(min, max) {
    if (max == null) {
      max = min;
      min = 0;
    }
    return min + Math.floor(Math.random() * (max - min + 1));
  };

  // A (possibly faster) way to get the current timestamp as an integer.
  _.now = Date.now || function() { return new Date().getTime(); };

  // List of HTML entities for escaping.
  var entityMap = {
    escape: {
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      '"': '&quot;',
      "'": '&#x27;'
    }
  };
  entityMap.unescape = _.invert(entityMap.escape);

  // Regexes containing the keys and values listed immediately above.
  var entityRegexes = {
    escape:   new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
    unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
  };

  // Functions for escaping and unescaping strings to/from HTML interpolation.
  _.each(['escape', 'unescape'], function(method) {
    _[method] = function(string) {
      if (string == null) return '';
      return ('' + string).replace(entityRegexes[method], function(match) {
        return entityMap[method][match];
      });
    };
  });

  // If the value of the named `property` is a function then invoke it with the
  // `object` as context; otherwise, return it.
  _.result = function(object, property) {
    if (object == null) return void 0;
    var value = object[property];
    return _.isFunction(value) ? value.call(object) : value;
  };

  // Add your own custom functions to the Underscore object.
  _.mixin = function(obj) {
    each(_.functions(obj), function(name) {
      var func = _[name] = obj[name];
      _.prototype[name] = function() {
        var args = [this._wrapped];
        push.apply(args, arguments);
        return result.call(this, func.apply(_, args));
      };
    });
  };

  // Generate a unique integer id (unique within the entire client session).
  // Useful for temporary DOM ids.
  var idCounter = 0;
  _.uniqueId = function(prefix) {
    var id = ++idCounter + '';
    return prefix ? prefix + id : id;
  };

  // By default, Underscore uses ERB-style template delimiters, change the
  // following template settings to use alternative delimiters.
  _.templateSettings = {
    evaluate    : /<%([\s\S]+?)%>/g,
    interpolate : /<%=([\s\S]+?)%>/g,
    escape      : /<%-([\s\S]+?)%>/g
  };

  // When customizing `templateSettings`, if you don't want to define an
  // interpolation, evaluation or escaping regex, we need one that is
  // guaranteed not to match.
  var noMatch = /(.)^/;

  // Certain characters need to be escaped so that they can be put into a
  // string literal.
  var escapes = {
    "'":      "'",
    '\\':     '\\',
    '\r':     'r',
    '\n':     'n',
    '\t':     't',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;

  // JavaScript micro-templating, similar to John Resig's implementation.
  // Underscore templating handles arbitrary delimiters, preserves whitespace,
  // and correctly escapes quotes within interpolated code.
  _.template = function(text, data, settings) {
    var render;
    settings = _.defaults({}, settings, _.templateSettings);

    // Combine delimiters into one regular expression via alternation.
    var matcher = new RegExp([
      (settings.escape || noMatch).source,
      (settings.interpolate || noMatch).source,
      (settings.evaluate || noMatch).source
    ].join('|') + '|$', 'g');

    // Compile the template source, escaping string literals appropriately.
    var index = 0;
    var source = "__p+='";
    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
      source += text.slice(index, offset)
        .replace(escaper, function(match) { return '\\' + escapes[match]; });

      if (escape) {
        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
      }
      if (interpolate) {
        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
      }
      if (evaluate) {
        source += "';\n" + evaluate + "\n__p+='";
      }
      index = offset + match.length;
      return match;
    });
    source += "';\n";

    // If a variable is not specified, place data values in local scope.
    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';

    source = "var __t,__p='',__j=Array.prototype.join," +
      "print=function(){__p+=__j.call(arguments,'');};\n" +
      source + "return __p;\n";

    try {
      render = new Function(settings.variable || 'obj', '_', source);
    } catch (e) {
      e.source = source;
      throw e;
    }

    if (data) return render(data, _);
    var template = function(data) {
      return render.call(this, data, _);
    };

    // Provide the compiled function source as a convenience for precompilation.
    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';

    return template;
  };

  // Add a "chain" function, which will delegate to the wrapper.
  _.chain = function(obj) {
    return _(obj).chain();
  };

  // OOP
  // ---------------
  // If Underscore is called as a function, it returns a wrapped object that
  // can be used OO-style. This wrapper holds altered versions of all the
  // underscore functions. Wrapped objects may be chained.

  // Helper function to continue chaining intermediate results.
  var result = function(obj) {
    return this._chain ? _(obj).chain() : obj;
  };

  // Add all of the Underscore functions to the wrapper object.
  _.mixin(_);

  // Add all mutator Array functions to the wrapper.
  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      var obj = this._wrapped;
      method.apply(obj, arguments);
      if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
      return result.call(this, obj);
    };
  });

  // Add all accessor Array functions to the wrapper.
  each(['concat', 'join', 'slice'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      return result.call(this, method.apply(this._wrapped, arguments));
    };
  });

  _.extend(_.prototype, {

    // Start chaining a wrapped Underscore object.
    chain: function() {
      this._chain = true;
      return this;
    },

    // Extracts the result from a wrapped and chained object.
    value: function() {
      return this._wrapped;
    }

  });

  // AMD registration happens at the end for compatibility with AMD loaders
  // that may not enforce next-turn semantics on modules. Even though general
  // practice for AMD registration is to be anonymous, underscore registers
  // as a named module because, like jQuery, it is a base library that is
  // popular enough to be bundled in a third party lib, but not be part of
  // an AMD load request. Those cases could generate an error when an
  // anonymous define() is called outside of a loader request.
  if (typeof define === 'function' && define.amd) {
    define('underscore', [], function() {
      return _;
    });
  }
}).call(this);

// RequireJS UnderscoreJS template plugin
// http://github.com/jfparadis/requirejs-tpl
//
// An alternative to http://github.com/ZeeAgency/requirejs-tpl
//
// Using UnderscoreJS micro-templates at http://underscorejs.org/#template
// Using and RequireJS text.js at http://requirejs.org/docs/api.html#text
// @author JF Paradis
// @version 0.0.2
//
// Released under the MIT license
//
// Usage:
//   require(['backbone', 'tpl!mytemplate'], function (Backbone, mytemplate) {
//     return Backbone.View.extend({
//       initialize: function(){
//         this.render();
//       },
//       render: function(){
//         this.$el.html(mytemplate({message: 'hello'}));
//     });
//   });
//
// Configuration: (optional)
//   require.config({
//     tpl: {
//       extension: '.tpl' // default = '.html'
//     }
//   });

/*jslint nomen: true */
/*global define: false */

define('tpl',['text', 'underscore'], function (text, _) {
    

    var buildMap = {},
        buildTemplateSource = "define('{pluginName}!{moduleName}', function () { return {source}; });\n";

    return {
        version: '0.0.2',

        load: function (moduleName, parentRequire, onload, config) {

            if (config.tpl && config.tpl.templateSettings) {
                _.templateSettings = config.tpl.templateSettings;
            }

            if (buildMap[moduleName]) {
                onload(buildMap[moduleName]);

            } else {
                var ext = (config.tpl && config.tpl.extension) || '.html';
                var path = (config.tpl && config.tpl.path) || '';
                text.load(path + moduleName + ext, parentRequire, function (source) {
                    buildMap[moduleName] = _.template(source);
                    onload(buildMap[moduleName]);
                }, config);
            }
        },

        write: function (pluginName, moduleName, write) {
            var build = buildMap[moduleName],
                source = build && build.source;
            if (source) {
                write.asModule(pluginName + '!' + moduleName,
                    buildTemplateSource
                    .replace('{pluginName}', pluginName)
                    .replace('{moduleName}', moduleName)
                    .replace('{source}', source));
            }
        }
    };
});


define('tpl!action', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div class="chat-message '+
((__t=(extra_classes))==null?'':__t)+
'">\n    <span class="chat-message-'+
((__t=(sender))==null?'':__t)+
'">'+
((__t=(time))==null?'':__t)+
' **'+
((__t=(username))==null?'':__t)+
' </span>\n    <span class="chat-message-content">'+
((__t=(message))==null?'':__t)+
'</span>\n</div>\n';
}
return __p;
}; });


define('tpl!add_contact_dropdown', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<dl class="add-converse-contact dropdown">\n    <dt id="xmpp-contact-search" class="fancy-dropdown">\n        <a class="toggle-xmpp-contact-form" href="#"\n            title="'+
((__t=(label_click_to_chat))==null?'':__t)+
'">\n        <span class="icon-plus"></span>'+
((__t=(label_add_contact))==null?'':__t)+
'</a>\n    </dt>\n    <dd class="search-xmpp" style="display:none"><ul></ul></dd>\n</dl>\n';
}
return __p;
}; });


define('tpl!add_contact_form', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<li>\n    <form class="add-xmpp-contact">\n        <input type="text"\n            name="identifier"\n            class="username"\n            placeholder="'+
((__t=(label_contact_username))==null?'':__t)+
'"/>\n        <button type="submit">'+
((__t=(label_add))==null?'':__t)+
'</button>\n    </form>\n</li>\n';
}
return __p;
}; });


define('tpl!change_status_message', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<form id="set-custom-xmpp-status">\n    <span class="input-button-group">\n        <input type="text" class="custom-xmpp-status" '+
((__t=(status_message))==null?'':__t)+
'\n            placeholder="'+
((__t=(label_custom_status))==null?'':__t)+
'"/>\n        <button type="submit">'+
((__t=(label_save))==null?'':__t)+
'</button>\n    </span>\n</form>\n';
}
return __p;
}; });


define('tpl!chat_status', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div class="xmpp-status">\n    <a class="choose-xmpp-status '+
((__t=(chat_status))==null?'':__t)+
'"\n       data-value="'+
((__t=(status_message))==null?'':__t)+
'"\n       href="#" title="'+
((__t=(desc_change_status))==null?'':__t)+
'">\n\n        <span class="icon-'+
((__t=(chat_status))==null?'':__t)+
'"></span>'+
((__t=(status_message))==null?'':__t)+
'\n    </a>\n    <a class="change-xmpp-status-message icon-pencil"\n        href="#"\n        title="'+
((__t=(desc_custom_status))==null?'':__t)+
'"></a>\n</div>\n';
}
return __p;
}; });


define('tpl!chatarea', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div class="chat-area">\n    <div class="chat-content"></div>\n    <form class="sendXMPPMessage" action="" method="post">\n        ';
 if (show_toolbar) { 
__p+='\n            <ul class="chat-toolbar no-text-select"></ul>\n        ';
 } 
__p+='\n        <textarea type="text" class="chat-textarea" \n            placeholder="'+
((__t=(label_message))==null?'':__t)+
'"/>\n    </form>\n</div>\n';
}
return __p;
}; });


define('tpl!chatbox', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div class="box-flyout" style="height: '+
((__t=(height))==null?'':__t)+
'px">\n    <div class="dragresize dragresize-tm"></div>\n    <div class="chat-head chat-head-chatbox">\n        <a class="close-chatbox-button icon-close"></a>\n        <a class="toggle-chatbox-button icon-minus"></a>\n        <div class="chat-title">\n            ';
 if (url) { 
__p+='\n                <a href="'+
((__t=(url))==null?'':__t)+
'" target="_blank" class="user">\n            ';
 } 
__p+='\n                    '+
((__t=( fullname ))==null?'':__t)+
'\n            ';
 if (url) { 
__p+='\n                </a>\n            ';
 } 
__p+='\n        </div>\n        <p class="user-custom-message"><p/>\n    </div>\n    <div class="chat-body">\n        <div class="chat-content"></div>\n        <form class="sendXMPPMessage" action="" method="post">\n            ';
 if (show_toolbar) { 
__p+='\n                <ul class="chat-toolbar no-text-select"></ul>\n            ';
 } 
__p+='\n        <textarea\n            type="text"\n            class="chat-textarea"\n            placeholder="'+
((__t=(label_personal_message))==null?'':__t)+
'"/>\n        </form>\n    </div>\n</div>\n';
}
return __p;
}; });


define('tpl!chatroom', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div class="box-flyout" style="height: '+
((__t=(height))==null?'':__t)+
'px"\n    ';
 if (minimized) { 
__p+=' style="display:none" ';
 } 
__p+='>\n    <div class="dragresize dragresize-tm"></div>\n    <div class="chat-head chat-head-chatroom">\n        <a class="close-chatbox-button icon-close"></a>\n        <a class="toggle-chatbox-button icon-minus"></a>\n        <a class="configure-chatroom-button icon-wrench" style="display:none"></a>\n        <div class="chat-title"> '+
((__t=( name ))==null?'':__t)+
' </div>\n        <p class="chatroom-topic"><p/>\n    </div>\n    <div class="chat-body"><span class="spinner centered"/></div>\n</div>\n';
}
return __p;
}; });


define('tpl!chatroom_password_form', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div class="chatroom-form-container">\n    <form class="chatroom-form">\n        <legend>'+
((__t=(heading))==null?'':__t)+
'</legend>\n        <label>'+
((__t=(label_password))==null?'':__t)+
'</label>\n        <input type="password" name="password"/>\n        <input type="submit" value="'+
((__t=(label_submit))==null?'':__t)+
'"/>\n    </form>\n</div>\n';
}
return __p;
}; });


define('tpl!chatroom_sidebar', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<!-- <div class="participants"> -->\n<form class="room-invite">\n    <input class="invited-contact" placeholder="'+
((__t=(label_invitation))==null?'':__t)+
'" type="text"/>\n</form>\n<label>'+
((__t=(label_occupants))==null?'':__t)+
':</label>\n<ul class="participant-list"></ul>\n<!-- </div> -->\n';
}
return __p;
}; });


define('tpl!chatrooms_tab', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<li><a class="s" href="#chatrooms">'+
((__t=(label_rooms))==null?'':__t)+
'</a></li>\n';
}
return __p;
}; });


define('tpl!chats_panel', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div id="minimized-chats">\n    <a id="toggle-minimized-chats" href="#"></a>\n    <div class="minimized-chats-flyout"></div>\n</div>\n';
}
return __p;
}; });


define('tpl!choose_status', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<dl id="target" class="dropdown">\n    <dt id="fancy-xmpp-status-select" class="fancy-dropdown"></dt>\n    <dd><ul class="xmpp-status-menu"></ul></dd>\n</dl>\n';
}
return __p;
}; });


define('tpl!contacts_panel', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<form class="set-xmpp-status" action="" method="post">\n    <span id="xmpp-status-holder">\n        <select id="select-xmpp-status" style="display:none">\n            <option value="online">'+
((__t=(label_online))==null?'':__t)+
'</option>\n            <option value="dnd">'+
((__t=(label_busy))==null?'':__t)+
'</option>\n            <option value="away">'+
((__t=(label_away))==null?'':__t)+
'</option>\n            <option value="offline">'+
((__t=(label_offline))==null?'':__t)+
'</option>\n            ';
 if (allow_logout)  { 
__p+='\n            <option value="logout">'+
((__t=(label_logout))==null?'':__t)+
'</option>\n            ';
 } 
__p+='\n        </select>\n    </span>\n</form>\n';
}
return __p;
}; });


define('tpl!contacts_tab', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<li><a class="s current" href="#users">'+
((__t=(label_contacts))==null?'':__t)+
'</a></li>\n';
}
return __p;
}; });


define('tpl!controlbox', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div class="box-flyout" style="height: '+
((__t=(height))==null?'':__t)+
'px">\n    <div class="dragresize dragresize-tm"></div>\n    <div class="chat-head controlbox-head">\n        <ul id="controlbox-tabs"></ul>\n        <a class="close-chatbox-button icon-close"></a>\n    </div>\n    <div class="controlbox-panes"></div>\n</div>\n';
}
return __p;
}; });


define('tpl!controlbox_toggle', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<span class="conn-feedback">'+
((__t=(label_toggle))==null?'':__t)+
'</span>\n<span style="display: none" id="online-count">(0)</span>\n';
}
return __p;
}; });


define('tpl!field', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<field var="'+
((__t=(name))==null?'':__t)+
'">';
 if (_.isArray(value)) { 
__p+='\n    ';
 _.each(value,function(arrayValue) { 
__p+='<value>'+
((__t=(arrayValue))==null?'':__t)+
'</value>';
 }); 
__p+='\n';
 } else { 
__p+='\n    <value>'+
((__t=(value))==null?'':__t)+
'</value>\n';
 } 
__p+='</field>\n';
}
return __p;
}; });


define('tpl!form_captcha', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='';
 if (label) { 
__p+='\n<label>\n    '+
((__t=(label))==null?'':__t)+
'\n</label>\n';
 } 
__p+='\n<img src="data:'+
((__t=(type))==null?'':__t)+
';base64,'+
((__t=(data))==null?'':__t)+
'">\n<input name="'+
((__t=(name))==null?'':__t)+
'" type="text" ';
 if (required) { 
__p+=' class="required" ';
 } 
__p+=' >\n\n\n';
}
return __p;
}; });


define('tpl!form_checkbox', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<label>'+
((__t=(label))==null?'':__t)+
'</label>\n<input name="'+
((__t=(name))==null?'':__t)+
'" type="'+
((__t=(type))==null?'':__t)+
'" '+
((__t=(checked))==null?'':__t)+
'>\n';
}
return __p;
}; });


define('tpl!form_input', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='';
 if (label) { 
__p+='\n<label>\n    '+
((__t=(label))==null?'':__t)+
'\n</label>\n';
 } 
__p+='\n<input name="'+
((__t=(name))==null?'':__t)+
'" type="'+
((__t=(type))==null?'':__t)+
'" \n    ';
 if (value) { 
__p+=' value="'+
((__t=(value))==null?'':__t)+
'" ';
 } 
__p+='\n    ';
 if (required) { 
__p+=' class="required" ';
 } 
__p+=' >\n';
}
return __p;
}; });


define('tpl!form_select', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<label>'+
((__t=(label))==null?'':__t)+
'</label>\n<select name="'+
((__t=(name))==null?'':__t)+
'"  ';
 if (multiple) { 
__p+=' multiple="multiple" ';
 } 
__p+='>'+
((__t=(options))==null?'':__t)+
'</select>\n';
}
return __p;
}; });


define('tpl!form_textarea', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<label class="label-ta">'+
((__t=(label))==null?'':__t)+
'</label>\n<textarea name="'+
((__t=(name))==null?'':__t)+
'">'+
((__t=(value))==null?'':__t)+
'</textarea>\n';
}
return __p;
}; });


define('tpl!form_username', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='';
 if (label) { 
__p+='\n<label>\n    '+
((__t=(label))==null?'':__t)+
'\n</label>\n';
 } 
__p+='\n<div class="input-group">\n    <input name="'+
((__t=(name))==null?'':__t)+
'" type="'+
((__t=(type))==null?'':__t)+
'" \n        ';
 if (value) { 
__p+=' value="'+
((__t=(value))==null?'':__t)+
'" ';
 } 
__p+='\n        ';
 if (required) { 
__p+=' class="required" ';
 } 
__p+=' />\n    <span>'+
((__t=(domain))==null?'':__t)+
'</span>\n</div>\n';
}
return __p;
}; });


define('tpl!group_header', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<a href="#" class="group-toggle icon-'+
((__t=(toggle_state))==null?'':__t)+
'" title="'+
((__t=(desc_group_toggle))==null?'':__t)+
'">'+
((__t=(label_group))==null?'':__t)+
'</a>\n';
}
return __p;
}; });


define('tpl!info', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div class="chat-info">'+
((__t=(message))==null?'':__t)+
'</div>\n';
}
return __p;
}; });


define('tpl!login_panel', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<form id="converse-login" method="post">\n    <label>'+
((__t=(label_username))==null?'':__t)+
'</label>\n    <input type="username" name="jid" placeholder="user@server">\n    <label>'+
((__t=(label_password))==null?'':__t)+
'</label>\n    <input type="password" name="password" placeholder="password">\n    <input class="submit" type="submit" value="'+
((__t=(label_login))==null?'':__t)+
'">\n    <span class="conn-feedback"></span>\n</form>\n';
}
return __p;
}; });


define('tpl!login_tab', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<li><a class="current" href="#login-dialog">'+
((__t=(label_sign_in))==null?'':__t)+
'</a></li>\n';
}
return __p;
}; });


define('tpl!message', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<div class="chat-message '+
((__t=(extra_classes))==null?'':__t)+
'">\n    <span class="chat-message-'+
((__t=(sender))==null?'':__t)+
'">'+
((__t=(time))==null?'':__t)+
' '+
((__t=(username))==null?'':__t)+
':&nbsp;</span>\n    <span class="chat-message-content">'+
((__t=(message))==null?'':__t)+
'</span>\n</div>\n';
}
return __p;
}; });


define('tpl!new_day', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<time class="chat-date" datetime="'+
((__t=(isodate))==null?'':__t)+
'">'+
((__t=(datestring))==null?'':__t)+
'</time>\n';
}
return __p;
}; });


define('tpl!occupant', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<li class="'+
((__t=(role))==null?'':__t)+
'"\n    ';
 if (role === "moderator") { 
__p+='\n       title="'+
((__t=(desc_moderator))==null?'':__t)+
'"\n    ';
 } 
__p+='\n    ';
 if (role === "participant") { 
__p+='\n       title="'+
((__t=(desc_participant))==null?'':__t)+
'"\n    ';
 } 
__p+='\n    ';
 if (role === "visitor") { 
__p+='\n       title="'+
((__t=(desc_visitor))==null?'':__t)+
'"\n    ';
 } 
__p+='\n>'+
((__t=(nick))==null?'':__t)+
'</li>\n';
}
return __p;
}; });


define('tpl!pending_contact', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<span class="pending-contact-name" title="Name: '+
((__t=(fullname))==null?'':__t)+
'\nJID: '+
((__t=(jid))==null?'':__t)+
'">'+
((__t=(fullname))==null?'':__t)+
'</span> <a class="remove-xmpp-contact icon-remove" title="'+
((__t=(desc_remove))==null?'':__t)+
'" href="#"></a>\n';
}
return __p;
}; });


define('tpl!pending_contacts', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<dt id="pending-xmpp-contacts"><a href="#" class="group-toggle icon-'+
((__t=(toggle_state))==null?'':__t)+
'" title="'+
((__t=(desc_group_toggle))==null?'':__t)+
'">'+
((__t=(label_pending_contacts))==null?'':__t)+
'</a></dt>\n';
}
return __p;
}; });


define('tpl!register_panel', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<form id="converse-register">\n    <span class="reg-feedback"></span>\n    <label>'+
((__t=(label_domain))==null?'':__t)+
'</label>\n    <input type="text" name="domain" placeholder="'+
((__t=(domain_placeholder))==null?'':__t)+
'">\n    <p class="form-help">'+
((__t=(help_providers))==null?'':__t)+
' <a href="'+
((__t=(href_providers))==null?'':__t)+
'" class="url" target="_blank">'+
((__t=(help_providers_link))==null?'':__t)+
'</a>.</p>\n    <input class="submit" type="submit" value="'+
((__t=(label_register))==null?'':__t)+
'">\n</form>\n';
}
return __p;
}; });


define('tpl!register_tab', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<li><a class="s" href="#register">'+
((__t=(label_register))==null?'':__t)+
'</a></li>\n';
}
return __p;
}; });


define('tpl!registration_form', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<p class="provider-title">'+
((__t=(domain))==null?'':__t)+
'</p>\n<a href=\'https://xmpp.net/result.php?domain='+
((__t=(domain))==null?'':__t)+
'&amp;type=client\'>\n    <img class="provider-score" src=\'https://xmpp.net/badge.php?domain='+
((__t=(domain))==null?'':__t)+
'\' alt=\'xmpp.net score\' />\n</a>\n<p class="title">'+
((__t=(title))==null?'':__t)+
'</p>\n<p class="instructions">'+
((__t=(instructions))==null?'':__t)+
'</p>\n';
}
return __p;
}; });


define('tpl!registration_request', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<span class="spinner login-submit"/>\n<p class="info">'+
((__t=(info_message))==null?'':__t)+
'</p>\n<button class="cancel hor_centered">'+
((__t=(cancel))==null?'':__t)+
'</button>\n';
}
return __p;
}; });


define('tpl!requesting_contact', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<span class="req-contact-name" title="Name: '+
((__t=(fullname))==null?'':__t)+
'\nJID: '+
((__t=(jid))==null?'':__t)+
'">'+
((__t=(fullname))==null?'':__t)+
'</span>\n<span class="request-actions">\n    <a class="accept-xmpp-request icon-checkmark" title="'+
((__t=(desc_accept))==null?'':__t)+
'" href="#"></a>\n    <a class="decline-xmpp-request icon-close" title="'+
((__t=(desc_decline))==null?'':__t)+
'" href="#"></a>\n</span>\n';
}
return __p;
}; });


define('tpl!requesting_contacts', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<dt id="xmpp-contact-requests"><a href="#" class="group-toggle icon-'+
((__t=(toggle_state))==null?'':__t)+
'" title="'+
((__t=(desc_group_toggle))==null?'':__t)+
'">'+
((__t=(label_contact_requests))==null?'':__t)+
'</a></dt>\n';
}
return __p;
}; });


define('tpl!room_description', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<!-- FIXME: check markup in mockup -->\n<div class="room-info">\n<p class="room-info"><strong>'+
((__t=(label_desc))==null?'':__t)+
'</strong> '+
((__t=(desc))==null?'':__t)+
'</p>\n<p class="room-info"><strong>'+
((__t=(label_occ))==null?'':__t)+
'</strong> '+
((__t=(occ))==null?'':__t)+
'</p>\n<p class="room-info"><strong>'+
((__t=(label_features))==null?'':__t)+
'</strong>\n    <ul>\n        ';
 if (passwordprotected) { 
__p+='\n        <li class="room-info locked">'+
((__t=(label_requires_auth))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (hidden) { 
__p+='\n        <li class="room-info">'+
((__t=(label_hidden))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (membersonly) { 
__p+='\n        <li class="room-info">'+
((__t=(label_requires_invite))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (moderated) { 
__p+='\n        <li class="room-info">'+
((__t=(label_moderated))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (nonanonymous) { 
__p+='\n        <li class="room-info">'+
((__t=(label_non_anon))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (open) { 
__p+='\n        <li class="room-info">'+
((__t=(label_open_room))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (persistent) { 
__p+='\n        <li class="room-info">'+
((__t=(label_permanent_room))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (publicroom) { 
__p+='\n        <li class="room-info">'+
((__t=(label_public))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (semianonymous) { 
__p+='\n        <li class="room-info">'+
((__t=(label_semi_anon))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (temporary) { 
__p+='\n        <li class="room-info">'+
((__t=(label_temp_room))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n        ';
 if (unmoderated) { 
__p+='\n        <li class="room-info">'+
((__t=(label_unmoderated))==null?'':__t)+
'</li>\n        ';
 } 
__p+='\n    </ul>\n</p>\n</div>\n';
}
return __p;
}; });


define('tpl!room_item', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<dd class="available-chatroom">\n<a class="open-room" data-room-jid="'+
((__t=(jid))==null?'':__t)+
'"\n   title="'+
((__t=(open_title))==null?'':__t)+
'" href="#">'+
((__t=(name))==null?'':__t)+
'</a>\n<a class="room-info icon-room-info" data-room-jid="'+
((__t=(jid))==null?'':__t)+
'"\n   title="'+
((__t=(info_title))==null?'':__t)+
'" href="#">&nbsp;</a>\n</dd>\n';
}
return __p;
}; });


define('tpl!room_panel', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<form class="add-chatroom" action="" method="post">\n    <label>'+
((__t=(label_room_name))==null?'':__t)+
'</label>\n    <input type="text" name="chatroom" class="new-chatroom-name"\n        placeholder="'+
((__t=(label_room_name))==null?'':__t)+
'"/>\n    <label>'+
((__t=(label_nickname))==null?'':__t)+
'</label>\n    <input type="text" name="nick" class="new-chatroom-nick"\n        placeholder="'+
((__t=(label_nickname))==null?'':__t)+
'"/>\n    <label>'+
((__t=(label_server))==null?'':__t)+
'</label>\n    <input type="'+
((__t=(server_input_type))==null?'':__t)+
'" name="server" class="new-chatroom-server"\n        placeholder="'+
((__t=(label_server))==null?'':__t)+
'"/>\n    <div class="button-group">\n        <input type="submit" class="left" name="join" value="'+
((__t=(label_join))==null?'':__t)+
'"/>\n        <input type="button" class="right" name="show" id="show-rooms" value="'+
((__t=(label_show_rooms))==null?'':__t)+
'"/>\n    </div>\n</form>\n<dl id="available-chatrooms"></dl>\n';
}
return __p;
}; });


define('tpl!roster', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<span class="input-button-group">\n    <input style="display: none;" class="roster-filter" placeholder="'+
((__t=(placeholder))==null?'':__t)+
'">\n    <select style="display: none;" class="filter-type">\n        <option value="contacts">'+
((__t=(label_contacts))==null?'':__t)+
'</option>\n        <option value="groups">'+
((__t=(label_groups))==null?'':__t)+
'</option>\n    </select>\n</span>\n';
}
return __p;
}; });


define('tpl!roster_item', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<a class="open-chat" title="Name: '+
((__t=(fullname))==null?'':__t)+
'\nJID: '+
((__t=(jid))==null?'':__t)+
'\n'+
((__t=(desc_chat))==null?'':__t)+
'" href="#"><span class="icon-'+
((__t=(chat_status))==null?'':__t)+
'" title="'+
((__t=(desc_status))==null?'':__t)+
'"></span>'+
((__t=(fullname))==null?'':__t)+
'</a>\n<a class="remove-xmpp-contact icon-remove" title="'+
((__t=(desc_remove))==null?'':__t)+
'" href="#"></a>\n';
}
return __p;
}; });


define('tpl!search_contact', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<li>\n    <form class="search-xmpp-contact">\n        <input type="text"\n            name="identifier"\n            class="username"\n            placeholder="'+
((__t=(label_contact_name))==null?'':__t)+
'"/>\n        <button type="submit">'+
((__t=(label_search))==null?'':__t)+
'</button>\n    </form>\n</li>\n';
}
return __p;
}; });


define('tpl!select_option', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<option value="'+
((__t=(value))==null?'':__t)+
'" ';
 if (selected) { 
__p+=' selected="selected" ';
 } 
__p+=' >'+
((__t=(label))==null?'':__t)+
'</option>\n';
}
return __p;
}; });


define('tpl!status_option', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<li>\n    <a href="#" class="'+
((__t=( value ))==null?'':__t)+
'" data-value="'+
((__t=( value ))==null?'':__t)+
'">\n        <span class="icon-'+
((__t=( value ))==null?'':__t)+
'"></span>\n        '+
((__t=( text ))==null?'':__t)+
'\n    </a>\n</li>\n';
}
return __p;
}; });


define('tpl!toggle_chats', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+=''+
((__t=(Minimized))==null?'':__t)+
' <span id="minimized-count">('+
((__t=(num_minimized))==null?'':__t)+
')</span>\n<span class="unread-message-count"\n    ';
 if (!num_unread) { 
__p+=' style="display: none" ';
 } 
__p+='\n    href="#">'+
((__t=(num_unread))==null?'':__t)+
'</span>\n';
}
return __p;
}; });


define('tpl!toolbar', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='';
 if (show_emoticons)  { 
__p+='\n    <li class="toggle-smiley icon-happy" title="Insert a smilery">\n        <ul>\n            <li><a class="icon-smiley" href="#" data-emoticon=":)"></a></li>\n            <li><a class="icon-wink" href="#" data-emoticon=";)"></a></li>\n            <li><a class="icon-grin" href="#" data-emoticon=":D"></a></li>\n            <li><a class="icon-tongue" href="#" data-emoticon=":P"></a></li>\n            <li><a class="icon-cool" href="#" data-emoticon="8)"></a></li>\n            <li><a class="icon-evil" href="#" data-emoticon=">:)"></a></li>\n            <li><a class="icon-confused" href="#" data-emoticon=":S"></a></li>\n            <li><a class="icon-wondering" href="#" data-emoticon=":\\"></a></li>\n            <li><a class="icon-angry" href="#" data-emoticon=">:("></a></li>\n            <li><a class="icon-sad" href="#" data-emoticon=":("></a></li>\n            <li><a class="icon-shocked" href="#" data-emoticon=":O"></a></li>\n            <li><a class="icon-thumbs-up" href="#" data-emoticon="(^.^)b"></a></li>\n            <li><a class="icon-heart" href="#" data-emoticon="<3"></a></li>\n        </ul>\n    </li>\n';
 } 
__p+='\n';
 if (show_call_button)  { 
__p+='\n<li class="toggle-call"><a class="icon-phone" title="'+
((__t=(label_start_call))==null?'':__t)+
'"></a></li>\n';
 } 
__p+='\n';
 if (show_participants_toggle)  { 
__p+='\n<li class="toggle-participants"><a class="icon-hide-users" title="'+
((__t=(label_hide_participants))==null?'':__t)+
'"></a></li>\n';
 } 
__p+='\n';
 if (show_clear_button)  { 
__p+='\n<li class="toggle-clear"><a class="icon-remove" title="'+
((__t=(label_clear))==null?'':__t)+
'"></a></li>\n';
 } 
__p+='\n';
 if (allow_otr)  { 
__p+='\n    <li class="toggle-otr '+
((__t=(otr_status_class))==null?'':__t)+
'" title="'+
((__t=(otr_tooltip))==null?'':__t)+
'">\n        <span class="chat-toolbar-text">'+
((__t=(otr_translated_status))==null?'':__t)+
'</span>\n        ';
 if (otr_status == UNENCRYPTED) { 
__p+='\n            <span class="icon-unlocked"></span>\n        ';
 } 
__p+='\n        ';
 if (otr_status == UNVERIFIED) { 
__p+='\n            <span class="icon-lock"></span>\n        ';
 } 
__p+='\n        ';
 if (otr_status == VERIFIED) { 
__p+='\n            <span class="icon-lock"></span>\n        ';
 } 
__p+='\n        ';
 if (otr_status == FINISHED) { 
__p+='\n            <span class="icon-unlocked"></span>\n        ';
 } 
__p+='\n        <ul>\n            ';
 if (otr_status == UNENCRYPTED) { 
__p+='\n               <li><a class="start-otr" href="#">'+
((__t=(label_start_encrypted_conversation))==null?'':__t)+
'</a></li>\n            ';
 } 
__p+='\n            ';
 if (otr_status != UNENCRYPTED) { 
__p+='\n               <li><a class="start-otr" href="#">'+
((__t=(label_refresh_encrypted_conversation))==null?'':__t)+
'</a></li>\n               <li><a class="end-otr" href="#">'+
((__t=(label_end_encrypted_conversation))==null?'':__t)+
'</a></li>\n               <li><a class="auth-otr" data-scheme="smp" href="#">'+
((__t=(label_verify_with_smp))==null?'':__t)+
'</a></li>\n            ';
 } 
__p+='\n            ';
 if (otr_status == UNVERIFIED) { 
__p+='\n               <li><a class="auth-otr" data-scheme="fingerprint" href="#">'+
((__t=(label_verify_with_fingerprints))==null?'':__t)+
'</a></li>\n            ';
 } 
__p+='\n            <li><a href="http://www.cypherpunks.ca/otr/help/3.2.0/levels.php" target="_blank">'+
((__t=(label_whats_this))==null?'':__t)+
'</a></li>\n        </ul>\n    </li>\n';
 } 
__p+='\n';
}
return __p;
}; });


define('tpl!trimmed_chat', [],function () { return function(obj){
var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};
with(obj||{}){
__p+='<a class="close-chatbox-button icon-close"></a>\n<a class="chat-head-message-count" \n    ';
 if (!num_unread) { 
__p+=' style="display: none" ';
 } 
__p+='\n    href="#">'+
((__t=(num_unread))==null?'':__t)+
'</a>\n<a href="#" class="restore-chat" title="'+
((__t=(tooltip))==null?'':__t)+
'">\n    '+
((__t=( title ))==null?'':__t)+
'\n</a>\n';
}
return __p;
}; });

define("converse-templates", [
    "tpl!action",
    "tpl!add_contact_dropdown",
    "tpl!add_contact_form",
    "tpl!change_status_message",
    "tpl!chat_status",
    "tpl!chatarea",
    "tpl!chatbox",
    "tpl!chatroom",
    "tpl!chatroom_password_form",
    "tpl!chatroom_sidebar",
    "tpl!chatrooms_tab",
    "tpl!chats_panel",
    "tpl!choose_status",
    "tpl!contacts_panel",
    "tpl!contacts_tab",
    "tpl!controlbox",
    "tpl!controlbox_toggle",
    "tpl!field",
    "tpl!form_captcha",
    "tpl!form_checkbox",
    "tpl!form_input",
    "tpl!form_select",
    "tpl!form_textarea",
    "tpl!form_username",
    "tpl!group_header",
    "tpl!info",
    "tpl!login_panel",
    "tpl!login_tab",
    "tpl!message",
    "tpl!new_day",
    "tpl!occupant",
    "tpl!pending_contact",
    "tpl!pending_contacts",
    "tpl!register_panel",
    "tpl!register_tab",
    "tpl!registration_form",
    "tpl!registration_request",
    "tpl!requesting_contact",
    "tpl!requesting_contacts",
    "tpl!room_description",
    "tpl!room_item",
    "tpl!room_panel",
    "tpl!roster",
    "tpl!roster_item",
    "tpl!search_contact",
    "tpl!select_option",
    "tpl!status_option",
    "tpl!toggle_chats",
    "tpl!toolbar",
    "tpl!trimmed_chat"
], function () {
    return {
        action:                 arguments[0],
        add_contact_dropdown:   arguments[1],
        add_contact_form:       arguments[2],
        change_status_message:  arguments[3],
        chat_status:            arguments[4],
        chatarea:               arguments[5],
        chatbox:                arguments[6],
        chatroom:               arguments[7],
        chatroom_password_form: arguments[8],
        chatroom_sidebar:       arguments[9],
        chatrooms_tab:          arguments[10],
        chats_panel:            arguments[11],
        choose_status:          arguments[12],
        contacts_panel:         arguments[13],
        contacts_tab:           arguments[14],
        controlbox:             arguments[15],
        controlbox_toggle:      arguments[16],
        field:                  arguments[17],
        form_captcha:           arguments[18],
        form_checkbox:          arguments[19],
        form_input:             arguments[20],
        form_select:            arguments[21],
        form_textarea:          arguments[22],
        form_username:          arguments[23],
        group_header:           arguments[24],
        info:                   arguments[25],
        login_panel:            arguments[26],
        login_tab:              arguments[27],
        message:                arguments[28],
        new_day:                arguments[29],
        occupant:               arguments[30],
        pending_contact:        arguments[31],
        pending_contacts:       arguments[32],
        register_panel:         arguments[33],
        register_tab:           arguments[34],
        registration_form:      arguments[35],
        registration_request:   arguments[36],
        requesting_contact:     arguments[37],
        requesting_contacts:    arguments[38],
        room_description:       arguments[39],
        room_item:              arguments[40],
        room_panel:             arguments[41],
        roster:                 arguments[42],
        roster_item:            arguments[43],
        search_contact:         arguments[44],
        select_option:          arguments[45],
        status_option:          arguments[46],
        toggle_chats:           arguments[47],
        toolbar:                arguments[48],
        trimmed_chat:           arguments[49]
    };
});

/*
jed.js
v0.5.0beta

https://github.com/SlexAxton/Jed
-----------
A gettext compatible i18n library for modern JavaScript Applications

by Alex Sexton - AlexSexton [at] gmail - @SlexAxton
WTFPL license for use
Dojo CLA for contributions

Jed offers the entire applicable GNU gettext spec'd set of
functions, but also offers some nicer wrappers around them.
The api for gettext was written for a language with no function
overloading, so Jed allows a little more of that.

Many thanks to Joshua I. Miller - unrtst@cpan.org - who wrote
gettext.js back in 2008. I was able to vet a lot of my ideas
against his. I also made sure Jed passed against his tests
in order to offer easy upgrades -- jsgettext.berlios.de
*/
(function (root, undef) {

  // Set up some underscore-style functions, if you already have
  // underscore, feel free to delete this section, and use it
  // directly, however, the amount of functions used doesn't
  // warrant having underscore as a full dependency.
  // Underscore 1.3.0 was used to port and is licensed
  // under the MIT License by Jeremy Ashkenas.
  var ArrayProto    = Array.prototype,
      ObjProto      = Object.prototype,
      slice         = ArrayProto.slice,
      hasOwnProp    = ObjProto.hasOwnProperty,
      nativeForEach = ArrayProto.forEach,
      breaker       = {};

  // We're not using the OOP style _ so we don't need the
  // extra level of indirection. This still means that you
  // sub out for real `_` though.
  var _ = {
    forEach : function( obj, iterator, context ) {
      var i, l, key;
      if ( obj === null ) {
        return;
      }

      if ( nativeForEach && obj.forEach === nativeForEach ) {
        obj.forEach( iterator, context );
      }
      else if ( obj.length === +obj.length ) {
        for ( i = 0, l = obj.length; i < l; i++ ) {
          if ( i in obj && iterator.call( context, obj[i], i, obj ) === breaker ) {
            return;
          }
        }
      }
      else {
        for ( key in obj) {
          if ( hasOwnProp.call( obj, key ) ) {
            if ( iterator.call (context, obj[key], key, obj ) === breaker ) {
              return;
            }
          }
        }
      }
    },
    extend : function( obj ) {
      this.forEach( slice.call( arguments, 1 ), function ( source ) {
        for ( var prop in source ) {
          obj[prop] = source[prop];
        }
      });
      return obj;
    }
  };
  // END Miniature underscore impl

  // Jed is a constructor function
  var Jed = function ( options ) {
    // Some minimal defaults
    this.defaults = {
      "locale_data" : {
        "messages" : {
          "" : {
            "domain"       : "messages",
            "lang"         : "en",
            "plural_forms" : "nplurals=2; plural=(n != 1);"
          }
          // There are no default keys, though
        }
      },
      // The default domain if one is missing
      "domain" : "messages"
    };

    // Mix in the sent options with the default options
    this.options = _.extend( {}, this.defaults, options );
    this.textdomain( this.options.domain );

    if ( options.domain && ! this.options.locale_data[ this.options.domain ] ) {
      throw new Error('Text domain set to non-existent domain: `' + options.domain + '`');
    }
  };

  // The gettext spec sets this character as the default
  // delimiter for context lookups.
  // e.g.: context\u0004key
  // If your translation company uses something different,
  // just change this at any time and it will use that instead.
  Jed.context_delimiter = String.fromCharCode( 4 );

  function getPluralFormFunc ( plural_form_string ) {
    return Jed.PF.compile( plural_form_string || "nplurals=2; plural=(n != 1);");
  }

  function Chain( key, i18n ){
    this._key = key;
    this._i18n = i18n;
  }

  // Create a chainable api for adding args prettily
  _.extend( Chain.prototype, {
    onDomain : function ( domain ) {
      this._domain = domain;
      return this;
    },
    withContext : function ( context ) {
      this._context = context;
      return this;
    },
    ifPlural : function ( num, pkey ) {
      this._val = num;
      this._pkey = pkey;
      return this;
    },
    fetch : function ( sArr ) {
      if ( {}.toString.call( sArr ) != '[object Array]' ) {
        sArr = [].slice.call(arguments);
      }
      return ( sArr && sArr.length ? Jed.sprintf : function(x){ return x; } )(
        this._i18n.dcnpgettext(this._domain, this._context, this._key, this._pkey, this._val),
        sArr
      );
    }
  });

  // Add functions to the Jed prototype.
  // These will be the functions on the object that's returned
  // from creating a `new Jed()`
  // These seem redundant, but they gzip pretty well.
  _.extend( Jed.prototype, {
    // The sexier api start point
    translate : function ( key ) {
      return new Chain( key, this );
    },

    textdomain : function ( domain ) {
      if ( ! domain ) {
        return this._textdomain;
      }
      this._textdomain = domain;
    },

    gettext : function ( key ) {
      return this.dcnpgettext.call( this, undef, undef, key );
    },

    dgettext : function ( domain, key ) {
     return this.dcnpgettext.call( this, domain, undef, key );
    },

    dcgettext : function ( domain , key /*, category */ ) {
      // Ignores the category anyways
      return this.dcnpgettext.call( this, domain, undef, key );
    },

    ngettext : function ( skey, pkey, val ) {
      return this.dcnpgettext.call( this, undef, undef, skey, pkey, val );
    },

    dngettext : function ( domain, skey, pkey, val ) {
      return this.dcnpgettext.call( this, domain, undef, skey, pkey, val );
    },

    dcngettext : function ( domain, skey, pkey, val/*, category */) {
      return this.dcnpgettext.call( this, domain, undef, skey, pkey, val );
    },

    pgettext : function ( context, key ) {
      return this.dcnpgettext.call( this, undef, context, key );
    },

    dpgettext : function ( domain, context, key ) {
      return this.dcnpgettext.call( this, domain, context, key );
    },

    dcpgettext : function ( domain, context, key/*, category */) {
      return this.dcnpgettext.call( this, domain, context, key );
    },

    npgettext : function ( context, skey, pkey, val ) {
      return this.dcnpgettext.call( this, undef, context, skey, pkey, val );
    },

    dnpgettext : function ( domain, context, skey, pkey, val ) {
      return this.dcnpgettext.call( this, domain, context, skey, pkey, val );
    },

    // The most fully qualified gettext function. It has every option.
    // Since it has every option, we can use it from every other method.
    // This is the bread and butter.
    // Technically there should be one more argument in this function for 'Category',
    // but since we never use it, we might as well not waste the bytes to define it.
    dcnpgettext : function ( domain, context, singular_key, plural_key, val ) {
      // Set some defaults

      plural_key = plural_key || singular_key;

      // Use the global domain default if one
      // isn't explicitly passed in
      domain = domain || this._textdomain;

      // Default the value to the singular case
      val = typeof val == 'undefined' ? 1 : val;

      var fallback;

      // Handle special cases

      // No options found
      if ( ! this.options ) {
        // There's likely something wrong, but we'll return the correct key for english
        // We do this by instantiating a brand new Jed instance with the default set
        // for everything that could be broken.
        fallback = new Jed();
        return fallback.dcnpgettext.call( fallback, undefined, undefined, singular_key, plural_key, val );
      }

      // No translation data provided
      if ( ! this.options.locale_data ) {
        throw new Error('No locale data provided.');
      }

      if ( ! this.options.locale_data[ domain ] ) {
        throw new Error('Domain `' + domain + '` was not found.');
      }

      if ( ! this.options.locale_data[ domain ][ "" ] ) {
        throw new Error('No locale meta information provided.');
      }

      // Make sure we have a truthy key. Otherwise we might start looking
      // into the empty string key, which is the options for the locale
      // data.
      if ( ! singular_key ) {
        throw new Error('No translation key found.');
      }

      // Handle invalid numbers, but try casting strings for good measure
      if ( typeof val != 'number' ) {
        val = parseInt( val, 10 );

        if ( isNaN( val ) ) {
          throw new Error('The number that was passed in is not a number.');
        }
      }

      var key  = context ? context + Jed.context_delimiter + singular_key : singular_key,
          locale_data = this.options.locale_data,
          dict = locale_data[ domain ],
          pluralForms = dict[""].plural_forms || (locale_data.messages || this.defaults.locale_data.messages)[""].plural_forms,
          val_idx = getPluralFormFunc(pluralForms)(val) + 1,
          val_list,
          res;

      // Throw an error if a domain isn't found
      if ( ! dict ) {
        throw new Error('No domain named `' + domain + '` could be found.');
      }

      val_list = dict[ key ];

      // If there is no match, then revert back to
      // english style singular/plural with the keys passed in.
      if ( ! val_list || val_idx >= val_list.length ) {
        if (this.options.missing_key_callback) {
          this.options.missing_key_callback(key);
        }
        res = [ null, singular_key, plural_key ];
        return res[ getPluralFormFunc(pluralForms)( val ) + 1 ];
      }

      res = val_list[ val_idx ];

      // This includes empty strings on purpose
      if ( ! res  ) {
        res = [ null, singular_key, plural_key ];
        return res[ getPluralFormFunc(pluralForms)( val ) + 1 ];
      }
      return res;
    }
  });


  // We add in sprintf capabilities for post translation value interolation
  // This is not internally used, so you can remove it if you have this
  // available somewhere else, or want to use a different system.

  // We _slightly_ modify the normal sprintf behavior to more gracefully handle
  // undefined values.

  /**
   sprintf() for JavaScript 0.7-beta1
   http://www.diveintojavascript.com/projects/javascript-sprintf

   Copyright (c) Alexandru Marasteanu <alexaholic [at) gmail (dot] com>
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:
       * Redistributions of source code must retain the above copyright
         notice, this list of conditions and the following disclaimer.
       * Redistributions in binary form must reproduce the above copyright
         notice, this list of conditions and the following disclaimer in the
         documentation and/or other materials provided with the distribution.
       * Neither the name of sprintf() for JavaScript nor the
         names of its contributors may be used to endorse or promote products
         derived from this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   DISCLAIMED. IN NO EVENT SHALL Alexandru Marasteanu BE LIABLE FOR ANY
   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
  var sprintf = (function() {
    function get_type(variable) {
      return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase();
    }
    function str_repeat(input, multiplier) {
      for (var output = []; multiplier > 0; output[--multiplier] = input) {/* do nothing */}
      return output.join('');
    }

    var str_format = function() {
      if (!str_format.cache.hasOwnProperty(arguments[0])) {
        str_format.cache[arguments[0]] = str_format.parse(arguments[0]);
      }
      return str_format.format.call(null, str_format.cache[arguments[0]], arguments);
    };

    str_format.format = function(parse_tree, argv) {
      var cursor = 1, tree_length = parse_tree.length, node_type = '', arg, output = [], i, k, match, pad, pad_character, pad_length;
      for (i = 0; i < tree_length; i++) {
        node_type = get_type(parse_tree[i]);
        if (node_type === 'string') {
          output.push(parse_tree[i]);
        }
        else if (node_type === 'array') {
          match = parse_tree[i]; // convenience purposes only
          if (match[2]) { // keyword argument
            arg = argv[cursor];
            for (k = 0; k < match[2].length; k++) {
              if (!arg.hasOwnProperty(match[2][k])) {
                throw(sprintf('[sprintf] property "%s" does not exist', match[2][k]));
              }
              arg = arg[match[2][k]];
            }
          }
          else if (match[1]) { // positional argument (explicit)
            arg = argv[match[1]];
          }
          else { // positional argument (implicit)
            arg = argv[cursor++];
          }

          if (/[^s]/.test(match[8]) && (get_type(arg) != 'number')) {
            throw(sprintf('[sprintf] expecting number but found %s', get_type(arg)));
          }

          // Jed EDIT
          if ( typeof arg == 'undefined' || arg === null ) {
            arg = '';
          }
          // Jed EDIT

          switch (match[8]) {
            case 'b': arg = arg.toString(2); break;
            case 'c': arg = String.fromCharCode(arg); break;
            case 'd': arg = parseInt(arg, 10); break;
            case 'e': arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential(); break;
            case 'f': arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg); break;
            case 'o': arg = arg.toString(8); break;
            case 's': arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg); break;
            case 'u': arg = Math.abs(arg); break;
            case 'x': arg = arg.toString(16); break;
            case 'X': arg = arg.toString(16).toUpperCase(); break;
          }
          arg = (/[def]/.test(match[8]) && match[3] && arg >= 0 ? '+'+ arg : arg);
          pad_character = match[4] ? match[4] == '0' ? '0' : match[4].charAt(1) : ' ';
          pad_length = match[6] - String(arg).length;
          pad = match[6] ? str_repeat(pad_character, pad_length) : '';
          output.push(match[5] ? arg + pad : pad + arg);
        }
      }
      return output.join('');
    };

    str_format.cache = {};

    str_format.parse = function(fmt) {
      var _fmt = fmt, match = [], parse_tree = [], arg_names = 0;
      while (_fmt) {
        if ((match = /^[^\x25]+/.exec(_fmt)) !== null) {
          parse_tree.push(match[0]);
        }
        else if ((match = /^\x25{2}/.exec(_fmt)) !== null) {
          parse_tree.push('%');
        }
        else if ((match = /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-fosuxX])/.exec(_fmt)) !== null) {
          if (match[2]) {
            arg_names |= 1;
            var field_list = [], replacement_field = match[2], field_match = [];
            if ((field_match = /^([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
              field_list.push(field_match[1]);
              while ((replacement_field = replacement_field.substring(field_match[0].length)) !== '') {
                if ((field_match = /^\.([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
                  field_list.push(field_match[1]);
                }
                else if ((field_match = /^\[(\d+)\]/.exec(replacement_field)) !== null) {
                  field_list.push(field_match[1]);
                }
                else {
                  throw('[sprintf] huh?');
                }
              }
            }
            else {
              throw('[sprintf] huh?');
            }
            match[2] = field_list;
          }
          else {
            arg_names |= 2;
          }
          if (arg_names === 3) {
            throw('[sprintf] mixing positional and named placeholders is not (yet) supported');
          }
          parse_tree.push(match);
        }
        else {
          throw('[sprintf] huh?');
        }
        _fmt = _fmt.substring(match[0].length);
      }
      return parse_tree;
    };

    return str_format;
  })();

  var vsprintf = function(fmt, argv) {
    argv.unshift(fmt);
    return sprintf.apply(null, argv);
  };

  Jed.parse_plural = function ( plural_forms, n ) {
    plural_forms = plural_forms.replace(/n/g, n);
    return Jed.parse_expression(plural_forms);
  };

  Jed.sprintf = function ( fmt, args ) {
    if ( {}.toString.call( args ) == '[object Array]' ) {
      return vsprintf( fmt, [].slice.call(args) );
    }
    return sprintf.apply(this, [].slice.call(arguments) );
  };

  Jed.prototype.sprintf = function () {
    return Jed.sprintf.apply(this, arguments);
  };
  // END sprintf Implementation

  // Start the Plural forms section
  // This is a full plural form expression parser. It is used to avoid
  // running 'eval' or 'new Function' directly against the plural
  // forms.
  //
  // This can be important if you get translations done through a 3rd
  // party vendor. I encourage you to use this instead, however, I
  // also will provide a 'precompiler' that you can use at build time
  // to output valid/safe function representations of the plural form
  // expressions. This means you can build this code out for the most
  // part.
  Jed.PF = {};

  Jed.PF.parse = function ( p ) {
    var plural_str = Jed.PF.extractPluralExpr( p );
    return Jed.PF.parser.parse.call(Jed.PF.parser, plural_str);
  };

  Jed.PF.compile = function ( p ) {
    // Handle trues and falses as 0 and 1
    function imply( val ) {
      return (val === true ? 1 : val ? val : 0);
    }

    var ast = Jed.PF.parse( p );
    return function ( n ) {
      return imply( Jed.PF.interpreter( ast )( n ) );
    };
  };

  Jed.PF.interpreter = function ( ast ) {
    return function ( n ) {
      var res;
      switch ( ast.type ) {
        case 'GROUP':
          return Jed.PF.interpreter( ast.expr )( n );
        case 'TERNARY':
          if ( Jed.PF.interpreter( ast.expr )( n ) ) {
            return Jed.PF.interpreter( ast.truthy )( n );
          }
          return Jed.PF.interpreter( ast.falsey )( n );
        case 'OR':
          return Jed.PF.interpreter( ast.left )( n ) || Jed.PF.interpreter( ast.right )( n );
        case 'AND':
          return Jed.PF.interpreter( ast.left )( n ) && Jed.PF.interpreter( ast.right )( n );
        case 'LT':
          return Jed.PF.interpreter( ast.left )( n ) < Jed.PF.interpreter( ast.right )( n );
        case 'GT':
          return Jed.PF.interpreter( ast.left )( n ) > Jed.PF.interpreter( ast.right )( n );
        case 'LTE':
          return Jed.PF.interpreter( ast.left )( n ) <= Jed.PF.interpreter( ast.right )( n );
        case 'GTE':
          return Jed.PF.interpreter( ast.left )( n ) >= Jed.PF.interpreter( ast.right )( n );
        case 'EQ':
          return Jed.PF.interpreter( ast.left )( n ) == Jed.PF.interpreter( ast.right )( n );
        case 'NEQ':
          return Jed.PF.interpreter( ast.left )( n ) != Jed.PF.interpreter( ast.right )( n );
        case 'MOD':
          return Jed.PF.interpreter( ast.left )( n ) % Jed.PF.interpreter( ast.right )( n );
        case 'VAR':
          return n;
        case 'NUM':
          return ast.val;
        default:
          throw new Error("Invalid Token found.");
      }
    };
  };

  Jed.PF.extractPluralExpr = function ( p ) {
    // trim first
    p = p.replace(/^\s\s*/, '').replace(/\s\s*$/, '');

    if (! /;\s*$/.test(p)) {
      p = p.concat(';');
    }

    var nplurals_re = /nplurals\=(\d+);/,
        plural_re = /plural\=(.*);/,
        nplurals_matches = p.match( nplurals_re ),
        res = {},
        plural_matches;

    // Find the nplurals number
    if ( nplurals_matches.length > 1 ) {
      res.nplurals = nplurals_matches[1];
    }
    else {
      throw new Error('nplurals not found in plural_forms string: ' + p );
    }

    // remove that data to get to the formula
    p = p.replace( nplurals_re, "" );
    plural_matches = p.match( plural_re );

    if (!( plural_matches && plural_matches.length > 1 ) ) {
      throw new Error('`plural` expression not found: ' + p);
    }
    return plural_matches[ 1 ];
  };

  /* Jison generated parser */
  Jed.PF.parser = (function(){

var parser = {trace: function trace() { },
yy: {},
symbols_: {"error":2,"expressions":3,"e":4,"EOF":5,"?":6,":":7,"||":8,"&&":9,"<":10,"<=":11,">":12,">=":13,"!=":14,"==":15,"%":16,"(":17,")":18,"n":19,"NUMBER":20,"$accept":0,"$end":1},
terminals_: {2:"error",5:"EOF",6:"?",7:":",8:"||",9:"&&",10:"<",11:"<=",12:">",13:">=",14:"!=",15:"==",16:"%",17:"(",18:")",19:"n",20:"NUMBER"},
productions_: [0,[3,2],[4,5],[4,3],[4,3],[4,3],[4,3],[4,3],[4,3],[4,3],[4,3],[4,3],[4,3],[4,1],[4,1]],
performAction: function anonymous(yytext,yyleng,yylineno,yy,yystate,$$,_$) {

var $0 = $$.length - 1;
switch (yystate) {
case 1: return { type : 'GROUP', expr: $$[$0-1] }; 
break;
case 2:this.$ = { type: 'TERNARY', expr: $$[$0-4], truthy : $$[$0-2], falsey: $$[$0] }; 
break;
case 3:this.$ = { type: "OR", left: $$[$0-2], right: $$[$0] };
break;
case 4:this.$ = { type: "AND", left: $$[$0-2], right: $$[$0] };
break;
case 5:this.$ = { type: 'LT', left: $$[$0-2], right: $$[$0] }; 
break;
case 6:this.$ = { type: 'LTE', left: $$[$0-2], right: $$[$0] };
break;
case 7:this.$ = { type: 'GT', left: $$[$0-2], right: $$[$0] };
break;
case 8:this.$ = { type: 'GTE', left: $$[$0-2], right: $$[$0] };
break;
case 9:this.$ = { type: 'NEQ', left: $$[$0-2], right: $$[$0] };
break;
case 10:this.$ = { type: 'EQ', left: $$[$0-2], right: $$[$0] };
break;
case 11:this.$ = { type: 'MOD', left: $$[$0-2], right: $$[$0] };
break;
case 12:this.$ = { type: 'GROUP', expr: $$[$0-1] }; 
break;
case 13:this.$ = { type: 'VAR' }; 
break;
case 14:this.$ = { type: 'NUM', val: Number(yytext) }; 
break;
}
},
table: [{3:1,4:2,17:[1,3],19:[1,4],20:[1,5]},{1:[3]},{5:[1,6],6:[1,7],8:[1,8],9:[1,9],10:[1,10],11:[1,11],12:[1,12],13:[1,13],14:[1,14],15:[1,15],16:[1,16]},{4:17,17:[1,3],19:[1,4],20:[1,5]},{5:[2,13],6:[2,13],7:[2,13],8:[2,13],9:[2,13],10:[2,13],11:[2,13],12:[2,13],13:[2,13],14:[2,13],15:[2,13],16:[2,13],18:[2,13]},{5:[2,14],6:[2,14],7:[2,14],8:[2,14],9:[2,14],10:[2,14],11:[2,14],12:[2,14],13:[2,14],14:[2,14],15:[2,14],16:[2,14],18:[2,14]},{1:[2,1]},{4:18,17:[1,3],19:[1,4],20:[1,5]},{4:19,17:[1,3],19:[1,4],20:[1,5]},{4:20,17:[1,3],19:[1,4],20:[1,5]},{4:21,17:[1,3],19:[1,4],20:[1,5]},{4:22,17:[1,3],19:[1,4],20:[1,5]},{4:23,17:[1,3],19:[1,4],20:[1,5]},{4:24,17:[1,3],19:[1,4],20:[1,5]},{4:25,17:[1,3],19:[1,4],20:[1,5]},{4:26,17:[1,3],19:[1,4],20:[1,5]},{4:27,17:[1,3],19:[1,4],20:[1,5]},{6:[1,7],8:[1,8],9:[1,9],10:[1,10],11:[1,11],12:[1,12],13:[1,13],14:[1,14],15:[1,15],16:[1,16],18:[1,28]},{6:[1,7],7:[1,29],8:[1,8],9:[1,9],10:[1,10],11:[1,11],12:[1,12],13:[1,13],14:[1,14],15:[1,15],16:[1,16]},{5:[2,3],6:[2,3],7:[2,3],8:[2,3],9:[1,9],10:[1,10],11:[1,11],12:[1,12],13:[1,13],14:[1,14],15:[1,15],16:[1,16],18:[2,3]},{5:[2,4],6:[2,4],7:[2,4],8:[2,4],9:[2,4],10:[1,10],11:[1,11],12:[1,12],13:[1,13],14:[1,14],15:[1,15],16:[1,16],18:[2,4]},{5:[2,5],6:[2,5],7:[2,5],8:[2,5],9:[2,5],10:[2,5],11:[2,5],12:[2,5],13:[2,5],14:[2,5],15:[2,5],16:[1,16],18:[2,5]},{5:[2,6],6:[2,6],7:[2,6],8:[2,6],9:[2,6],10:[2,6],11:[2,6],12:[2,6],13:[2,6],14:[2,6],15:[2,6],16:[1,16],18:[2,6]},{5:[2,7],6:[2,7],7:[2,7],8:[2,7],9:[2,7],10:[2,7],11:[2,7],12:[2,7],13:[2,7],14:[2,7],15:[2,7],16:[1,16],18:[2,7]},{5:[2,8],6:[2,8],7:[2,8],8:[2,8],9:[2,8],10:[2,8],11:[2,8],12:[2,8],13:[2,8],14:[2,8],15:[2,8],16:[1,16],18:[2,8]},{5:[2,9],6:[2,9],7:[2,9],8:[2,9],9:[2,9],10:[2,9],11:[2,9],12:[2,9],13:[2,9],14:[2,9],15:[2,9],16:[1,16],18:[2,9]},{5:[2,10],6:[2,10],7:[2,10],8:[2,10],9:[2,10],10:[2,10],11:[2,10],12:[2,10],13:[2,10],14:[2,10],15:[2,10],16:[1,16],18:[2,10]},{5:[2,11],6:[2,11],7:[2,11],8:[2,11],9:[2,11],10:[2,11],11:[2,11],12:[2,11],13:[2,11],14:[2,11],15:[2,11],16:[2,11],18:[2,11]},{5:[2,12],6:[2,12],7:[2,12],8:[2,12],9:[2,12],10:[2,12],11:[2,12],12:[2,12],13:[2,12],14:[2,12],15:[2,12],16:[2,12],18:[2,12]},{4:30,17:[1,3],19:[1,4],20:[1,5]},{5:[2,2],6:[1,7],7:[2,2],8:[1,8],9:[1,9],10:[1,10],11:[1,11],12:[1,12],13:[1,13],14:[1,14],15:[1,15],16:[1,16],18:[2,2]}],
defaultActions: {6:[2,1]},
parseError: function parseError(str, hash) {
    throw new Error(str);
},
parse: function parse(input) {
    var self = this,
        stack = [0],
        vstack = [null], // semantic value stack
        lstack = [], // location stack
        table = this.table,
        yytext = '',
        yylineno = 0,
        yyleng = 0,
        recovering = 0,
        TERROR = 2,
        EOF = 1;

    //this.reductionCount = this.shiftCount = 0;

    this.lexer.setInput(input);
    this.lexer.yy = this.yy;
    this.yy.lexer = this.lexer;
    if (typeof this.lexer.yylloc == 'undefined')
        this.lexer.yylloc = {};
    var yyloc = this.lexer.yylloc;
    lstack.push(yyloc);

    if (typeof this.yy.parseError === 'function')
        this.parseError = this.yy.parseError;

    function popStack (n) {
        stack.length = stack.length - 2*n;
        vstack.length = vstack.length - n;
        lstack.length = lstack.length - n;
    }

    function lex() {
        var token;
        token = self.lexer.lex() || 1; // $end = 1
        // if token isn't its numeric value, convert
        if (typeof token !== 'number') {
            token = self.symbols_[token] || token;
        }
        return token;
    }

    var symbol, preErrorSymbol, state, action, a, r, yyval={},p,len,newState, expected;
    while (true) {
        // retreive state number from top of stack
        state = stack[stack.length-1];

        // use default actions if available
        if (this.defaultActions[state]) {
            action = this.defaultActions[state];
        } else {
            if (symbol == null)
                symbol = lex();
            // read action for current state and first input
            action = table[state] && table[state][symbol];
        }

        // handle parse error
        _handle_error:
        if (typeof action === 'undefined' || !action.length || !action[0]) {

            if (!recovering) {
                // Report error
                expected = [];
                for (p in table[state]) if (this.terminals_[p] && p > 2) {
                    expected.push("'"+this.terminals_[p]+"'");
                }
                var errStr = '';
                if (this.lexer.showPosition) {
                    errStr = 'Parse error on line '+(yylineno+1)+":\n"+this.lexer.showPosition()+"\nExpecting "+expected.join(', ') + ", got '" + this.terminals_[symbol]+ "'";
                } else {
                    errStr = 'Parse error on line '+(yylineno+1)+": Unexpected " +
                                  (symbol == 1 /*EOF*/ ? "end of input" :
                                              ("'"+(this.terminals_[symbol] || symbol)+"'"));
                }
                this.parseError(errStr,
                    {text: this.lexer.match, token: this.terminals_[symbol] || symbol, line: this.lexer.yylineno, loc: yyloc, expected: expected});
            }

            // just recovered from another error
            if (recovering == 3) {
                if (symbol == EOF) {
                    throw new Error(errStr || 'Parsing halted.');
                }

                // discard current lookahead and grab another
                yyleng = this.lexer.yyleng;
                yytext = this.lexer.yytext;
                yylineno = this.lexer.yylineno;
                yyloc = this.lexer.yylloc;
                symbol = lex();
            }

            // try to recover from error
            while (1) {
                // check for error recovery rule in this state
                if ((TERROR.toString()) in table[state]) {
                    break;
                }
                if (state == 0) {
                    throw new Error(errStr || 'Parsing halted.');
                }
                popStack(1);
                state = stack[stack.length-1];
            }

            preErrorSymbol = symbol; // save the lookahead token
            symbol = TERROR;         // insert generic error symbol as new lookahead
            state = stack[stack.length-1];
            action = table[state] && table[state][TERROR];
            recovering = 3; // allow 3 real symbols to be shifted before reporting a new error
        }

        // this shouldn't happen, unless resolve defaults are off
        if (action[0] instanceof Array && action.length > 1) {
            throw new Error('Parse Error: multiple actions possible at state: '+state+', token: '+symbol);
        }

        switch (action[0]) {

            case 1: // shift
                //this.shiftCount++;

                stack.push(symbol);
                vstack.push(this.lexer.yytext);
                lstack.push(this.lexer.yylloc);
                stack.push(action[1]); // push state
                symbol = null;
                if (!preErrorSymbol) { // normal execution/no error
                    yyleng = this.lexer.yyleng;
                    yytext = this.lexer.yytext;
                    yylineno = this.lexer.yylineno;
                    yyloc = this.lexer.yylloc;
                    if (recovering > 0)
                        recovering--;
                } else { // error just occurred, resume old lookahead f/ before error
                    symbol = preErrorSymbol;
                    preErrorSymbol = null;
                }
                break;

            case 2: // reduce
                //this.reductionCount++;

                len = this.productions_[action[1]][1];

                // perform semantic action
                yyval.$ = vstack[vstack.length-len]; // default to $$ = $1
                // default location, uses first token for firsts, last for lasts
                yyval._$ = {
                    first_line: lstack[lstack.length-(len||1)].first_line,
                    last_line: lstack[lstack.length-1].last_line,
                    first_column: lstack[lstack.length-(len||1)].first_column,
                    last_column: lstack[lstack.length-1].last_column
                };
                r = this.performAction.call(yyval, yytext, yyleng, yylineno, this.yy, action[1], vstack, lstack);

                if (typeof r !== 'undefined') {
                    return r;
                }

                // pop off stack
                if (len) {
                    stack = stack.slice(0,-1*len*2);
                    vstack = vstack.slice(0, -1*len);
                    lstack = lstack.slice(0, -1*len);
                }

                stack.push(this.productions_[action[1]][0]);    // push nonterminal (reduce)
                vstack.push(yyval.$);
                lstack.push(yyval._$);
                // goto new state = table[STATE][NONTERMINAL]
                newState = table[stack[stack.length-2]][stack[stack.length-1]];
                stack.push(newState);
                break;

            case 3: // accept
                return true;
        }

    }

    return true;
}};/* Jison generated lexer */
var lexer = (function(){

var lexer = ({EOF:1,
parseError:function parseError(str, hash) {
        if (this.yy.parseError) {
            this.yy.parseError(str, hash);
        } else {
            throw new Error(str);
        }
    },
setInput:function (input) {
        this._input = input;
        this._more = this._less = this.done = false;
        this.yylineno = this.yyleng = 0;
        this.yytext = this.matched = this.match = '';
        this.conditionStack = ['INITIAL'];
        this.yylloc = {first_line:1,first_column:0,last_line:1,last_column:0};
        return this;
    },
input:function () {
        var ch = this._input[0];
        this.yytext+=ch;
        this.yyleng++;
        this.match+=ch;
        this.matched+=ch;
        var lines = ch.match(/\n/);
        if (lines) this.yylineno++;
        this._input = this._input.slice(1);
        return ch;
    },
unput:function (ch) {
        this._input = ch + this._input;
        return this;
    },
more:function () {
        this._more = true;
        return this;
    },
pastInput:function () {
        var past = this.matched.substr(0, this.matched.length - this.match.length);
        return (past.length > 20 ? '...':'') + past.substr(-20).replace(/\n/g, "");
    },
upcomingInput:function () {
        var next = this.match;
        if (next.length < 20) {
            next += this._input.substr(0, 20-next.length);
        }
        return (next.substr(0,20)+(next.length > 20 ? '...':'')).replace(/\n/g, "");
    },
showPosition:function () {
        var pre = this.pastInput();
        var c = new Array(pre.length + 1).join("-");
        return pre + this.upcomingInput() + "\n" + c+"^";
    },
next:function () {
        if (this.done) {
            return this.EOF;
        }
        if (!this._input) this.done = true;

        var token,
            match,
            col,
            lines;
        if (!this._more) {
            this.yytext = '';
            this.match = '';
        }
        var rules = this._currentRules();
        for (var i=0;i < rules.length; i++) {
            match = this._input.match(this.rules[rules[i]]);
            if (match) {
                lines = match[0].match(/\n.*/g);
                if (lines) this.yylineno += lines.length;
                this.yylloc = {first_line: this.yylloc.last_line,
                               last_line: this.yylineno+1,
                               first_column: this.yylloc.last_column,
                               last_column: lines ? lines[lines.length-1].length-1 : this.yylloc.last_column + match[0].length}
                this.yytext += match[0];
                this.match += match[0];
                this.matches = match;
                this.yyleng = this.yytext.length;
                this._more = false;
                this._input = this._input.slice(match[0].length);
                this.matched += match[0];
                token = this.performAction.call(this, this.yy, this, rules[i],this.conditionStack[this.conditionStack.length-1]);
                if (token) return token;
                else return;
            }
        }
        if (this._input === "") {
            return this.EOF;
        } else {
            this.parseError('Lexical error on line '+(this.yylineno+1)+'. Unrecognized text.\n'+this.showPosition(), 
                    {text: "", token: null, line: this.yylineno});
        }
    },
lex:function lex() {
        var r = this.next();
        if (typeof r !== 'undefined') {
            return r;
        } else {
            return this.lex();
        }
    },
begin:function begin(condition) {
        this.conditionStack.push(condition);
    },
popState:function popState() {
        return this.conditionStack.pop();
    },
_currentRules:function _currentRules() {
        return this.conditions[this.conditionStack[this.conditionStack.length-1]].rules;
    },
topState:function () {
        return this.conditionStack[this.conditionStack.length-2];
    },
pushState:function begin(condition) {
        this.begin(condition);
    }});
lexer.performAction = function anonymous(yy,yy_,$avoiding_name_collisions,YY_START) {

var YYSTATE=YY_START;
switch($avoiding_name_collisions) {
case 0:/* skip whitespace */
break;
case 1:return 20
break;
case 2:return 19
break;
case 3:return 8
break;
case 4:return 9
break;
case 5:return 6
break;
case 6:return 7
break;
case 7:return 11
break;
case 8:return 13
break;
case 9:return 10
break;
case 10:return 12
break;
case 11:return 14
break;
case 12:return 15
break;
case 13:return 16
break;
case 14:return 17
break;
case 15:return 18
break;
case 16:return 5
break;
case 17:return 'INVALID'
break;
}
};
lexer.rules = [/^\s+/,/^[0-9]+(\.[0-9]+)?\b/,/^n\b/,/^\|\|/,/^&&/,/^\?/,/^:/,/^<=/,/^>=/,/^</,/^>/,/^!=/,/^==/,/^%/,/^\(/,/^\)/,/^$/,/^./];
lexer.conditions = {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17],"inclusive":true}};return lexer;})()
parser.lexer = lexer;
return parser;
})();
// End parser

  // Handle node, amd, and global systems
  if (typeof exports !== 'undefined') {
    if (typeof module !== 'undefined' && module.exports) {
      exports = module.exports = Jed;
    }
    exports.Jed = Jed;
  }
  else {
    if (typeof define === 'function' && define.amd) {
      define('jed', [],function() {
        return Jed;
      });
    }
    // Leak a global regardless of module system
    root['Jed'] = Jed;
  }

})(this);


define('text!af',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "lang": "af"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "nie-privaat"\n         ],\n         "unverified": [\n            null,\n            "ongeverifieer"\n         ],\n         "verified": [\n            null,\n            "privaat"\n         ],\n         "finished": [\n            null,\n            "afgesluit"\n         ],\n         "This contact is busy": [\n            null,\n            "Hierdie persoon is besig"\n         ],\n         "This contact is online": [\n            null,\n            "Hierdie persoon is aanlyn"\n         ],\n         "This contact is offline": [\n            null,\n            "Hierdie persoon is aflyn"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Hierdie persoon is onbeskikbaar"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "Hierdie persoon is vir lank afwesig"\n         ],\n         "This contact is away": [\n            null,\n            "Hierdie persoon is afwesig"\n         ],\n         "My contacts": [\n            null,\n            "My kontakte"\n         ],\n         "Pending contacts": [\n            null,\n            "Hangende kontakte"\n         ],\n         "Contact requests": [\n            null,\n            "Kontak versoeke"\n         ],\n         "Ungrouped": [\n            null,\n            "Ongegroepeer"\n         ],\n         "Contacts": [\n            null,\n            "Kontakte"\n         ],\n         "Groups": [\n            null,\n            "Groepe"\n         ],\n         "Reconnecting": [\n            null,\n            "Herkonnekteer"\n         ],\n         "Error": [\n            null,\n            "Fout"\n         ],\n         "Connecting": [\n            null,\n            "Verbind tans"\n         ],\n         "Authenticating": [\n            null,\n            "Besig om te bekragtig"\n         ],\n         "Authentication Failed": [\n            null,\n            "Bekragtiging het gefaal"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "Herstel versleutelde sessie"\n         ],\n         "Generating private key.": [\n            null,\n            "Genereer private sleutel."\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            "U webblaaier mag tydelik onreageerbaar word."\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            "Verifieeringsversoek van  %1$s\\n\\nU gespreksmaat probeer om u identiteit te verifieer, deur die volgende vraag te vra \\n\\n%2$s"\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "Kon nie hierdie gebruiker se identitied verifieer nie."\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            "Sleutels word met gespreksmaat uitgeruil."\n         ],\n         "Personal message": [\n            null,\n            "Persoonlike boodskap"\n         ],\n         "Are you sure you want to clear the messages from this room?": [\n            null,\n            "Is u seker dat u die boodskappe in hierdie kamer wil verwyder?"\n         ],\n         "me": [\n            null,\n            "ek"\n         ],\n         "is typing": [\n            null,\n            "tik tans"\n         ],\n         "has stopped typing": [\n            null,\n            "het opgehou tik"\n         ],\n         "Show this menu": [\n            null,\n            "Vertoon hierdie keuselys"\n         ],\n         "Write in the third person": [\n            null,\n            "Skryf in die derde persoon"\n         ],\n         "Remove messages": [\n     


define('text!de',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=2; plural=(n != 1);",\n            "lang": "de"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            ""\n         ],\n         "unverified": [\n            null,\n            ""\n         ],\n         "verified": [\n            null,\n            ""\n         ],\n         "finished": [\n            null,\n            ""\n         ],\n         "This contact is busy": [\n            null,\n            "Dieser Kontakt ist beschäfticht"\n         ],\n         "This contact is online": [\n            null,\n            "Dieser Kontakt ist online"\n         ],\n         "This contact is offline": [\n            null,\n            "Dieser Kontakt ist offline"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Dieser Kontakt ist nicht verfügbar"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "Dieser Kontakt is für längere Zeit abwesend"\n         ],\n         "This contact is away": [\n            null,\n            "Dieser Kontakt ist abwesend"\n         ],\n         "My contacts": [\n            null,\n            "Meine Kontakte"\n         ],\n         "Pending contacts": [\n            null,\n            "Unbestätigte Kontakte"\n         ],\n         "Contact requests": [\n            null,\n            "Kontaktanfragen"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "Kontakte"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "Fehler"\n         ],\n         "Connecting": [\n            null,\n            "Verbindungsaufbau …"\n         ],\n         "Authenticating": [\n            null,\n            "Authentifizierung"\n         ],\n         "Authentication Failed": [\n            null,\n            "Authentifizierung gescheitert"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            ""\n         ],\n         "Generating private key.": [\n            null,\n            ""\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            ""\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            ""\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            ""\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            ""\n         ],\n         "Personal message": [\n            null,\n            "Persönliche Nachricht"\n         ],\n         "me": [\n            null,\n            "Ich"\n         ],\n         "Show this menu": [\n            null,\n            "Dieses Menü anzeigen"\n         ],\n         "Write in the third person": [\n            null,\n            "In der dritten Person schreiben"\n         ],\n         "Remove messages": [\n            null,\n            "Nachrichten entfernen"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            ""\n         ],\n         "Your message could not be sent": [\n            null,\n            ""\n         ],\n         "We received an unencrypted message": [\n            null,\n            ""\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            ""\n         ],\n         "Here are the fingerprints, please confirm them with %1$s, outside of this chat.\\n\\nFingerprint for you, %2$s: %3$s\\n\\nFingerprint for %1$s: %4$s\\n\\nIf you have confirmed that the fingerprints match, click OK, othe


define('text!en',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=2; plural=(n != 1);",\n            "lang": "en"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "unencrypted"\n         ],\n         "unverified": [\n            null,\n            "unverified"\n         ],\n         "verified": [\n            null,\n            "verified"\n         ],\n         "finished": [\n            null,\n            "finished"\n         ],\n         "This contact is busy": [\n            null,\n            ""\n         ],\n         "This contact is online": [\n            null,\n            ""\n         ],\n         "This contact is offline": [\n            null,\n            ""\n         ],\n         "This contact is unavailable": [\n            null,\n            ""\n         ],\n         "This contact is away for an extended period": [\n            null,\n            ""\n         ],\n         "This contact is away": [\n            null,\n            ""\n         ],\n         "My contacts": [\n            null,\n            "My contacts"\n         ],\n         "Pending contacts": [\n            null,\n            "Pending contacts"\n         ],\n         "Contact requests": [\n            null,\n            "Contact requests"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "Contacts"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "Error"\n         ],\n         "Connecting": [\n            null,\n            "Connecting"\n         ],\n         "Authenticating": [\n            null,\n            "Authenticating"\n         ],\n         "Authentication Failed": [\n            null,\n            "Authentication Failed"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "Re-establishing encrypted session"\n         ],\n         "Generating private key.": [\n            null,\n            ""\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            ""\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            ""\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            ""\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            ""\n         ],\n         "Personal message": [\n            null,\n            "Personal message"\n         ],\n         "me": [\n            null,\n            ""\n         ],\n         "is typing": [\n            null,\n            ""\n         ],\n         "has stopped typing": [\n            null,\n            ""\n         ],\n         "has gone away": [\n            null,\n            ""\n         ],\n         "Show this menu": [\n            null,\n            "Show this menu"\n         ],\n         "Write in the third person": [\n            null,\n            "Write in the third person"\n         ],\n         "Remove messages": [\n            null,\n            "Remove messages"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            ""\n         ],\n         "Your message could not be sent": [\n            null,\n            ""\n         ],\n         "We received an unencrypted message": [\n            null,\n            ""\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            ""\n         ],\n         "Here are the fingerprints, please confirm them with %1$s, outside of this chat.\\n\\nFingerprint for you, %2$s: %3$s\\n\\nFingerprint for %1$s: %4$s\\n\\nIf you have 


define('text!es',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=2; plural=(n != 1);",\n            "lang": "es"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "texto plano"\n         ],\n         "unverified": [\n            null,\n            "sin verificar"\n         ],\n         "verified": [\n            null,\n            "verificado"\n         ],\n         "finished": [\n            null,\n            "finalizado"\n         ],\n         "This contact is busy": [\n            null,\n            "Este contacto está ocupado"\n         ],\n         "This contact is online": [\n            null,\n            "Este contacto está en línea"\n         ],\n         "This contact is offline": [\n            null,\n            "Este contacto está desconectado"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Este contacto no está disponible"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "Este contacto está ausente por un largo periodo de tiempo"\n         ],\n         "This contact is away": [\n            null,\n            "Este contacto está ausente"\n         ],\n         "My contacts": [\n            null,\n            "Mis contactos"\n         ],\n         "Pending contacts": [\n            null,\n            "Contactos pendientes"\n         ],\n         "Contact requests": [\n            null,\n            "Solicitudes de contacto"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "Contactos"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Reconnecting": [\n            null,\n            "Reconectando"\n         ],\n         "Error": [\n            null,\n            "Error"\n         ],\n         "Connecting": [\n            null,\n            "Conectando"\n         ],\n         "Authenticating": [\n            null,\n            "Autenticando"\n         ],\n         "Authentication Failed": [\n            null,\n            "La autenticación falló"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "Re-estableciendo sesión cifrada"\n         ],\n         "Generating private key.": [\n            null,\n            "Generando llave privada"\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            "Su navegador podría dejar de responder por un momento"\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "No se pudo verificar la identidad de este usuario"\n         ],\n         "Personal message": [\n            null,\n            "Mensaje personal"\n         ],\n         "Are you sure you want to clear the messages from this room?": [\n            null,\n            "¿Está seguro de querer limpiar los mensajes de esta sala?"\n         ],\n         "me": [\n            null,\n            "yo"\n         ],\n         "is typing": [\n            null,\n            ""\n         ],\n         "has stopped typing": [\n            null,\n            ""\n         ],\n         "Show this menu": [\n            null,\n            "Mostrar este menú"\n         ],\n         "Write in the third person": [\n            null,\n            "Escribir en tercera persona"\n         ],\n         "Remove messages": [\n            null,\n            "Eliminar mensajes"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            "¿Está seguro de querer limpiar los mensajes de esta conversación?"\n         ],\n         "Your message could not be sent": [\n            null,\n            "Su mensaje no se pudo enviar"\n         ],\n         "We received an unencr


define('text!fr',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=2; plural=(n != 1);",\n            "lang": "fr"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            ""\n         ],\n         "unverified": [\n            null,\n            ""\n         ],\n         "verified": [\n            null,\n            ""\n         ],\n         "finished": [\n            null,\n            ""\n         ],\n         "This contact is busy": [\n            null,\n            ""\n         ],\n         "This contact is online": [\n            null,\n            ""\n         ],\n         "This contact is offline": [\n            null,\n            ""\n         ],\n         "This contact is away for an extended period": [\n            null,\n            ""\n         ],\n         "This contact is away": [\n            null,\n            ""\n         ],\n         "My contacts": [\n            null,\n            "Mes contacts"\n         ],\n         "Pending contacts": [\n            null,\n            "Contacts en attente"\n         ],\n         "Contact requests": [\n            null,\n            "Demandes de contacts"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "Contacts"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "Erreur"\n         ],\n         "Connecting": [\n            null,\n            "Connection"\n         ],\n         "Authenticating": [\n            null,\n            "Authentification"\n         ],\n         "Authentication Failed": [\n            null,\n            "L\'authentification a échoué"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            ""\n         ],\n         "Generating private key.": [\n            null,\n            ""\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            ""\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            ""\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            ""\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            ""\n         ],\n         "Personal message": [\n            null,\n            "Message personnel"\n         ],\n         "me": [\n            null,\n            ""\n         ],\n         "is typing": [\n            null,\n            ""\n         ],\n         "has stopped typing": [\n            null,\n            ""\n         ],\n         "has gone away": [\n            null,\n            ""\n         ],\n         "Show this menu": [\n            null,\n            "Afficher ce menu"\n         ],\n         "Write in the third person": [\n            null,\n            "Écrire à la troisième personne"\n         ],\n         "Remove messages": [\n            null,\n            "Effacer les messages"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            ""\n         ],\n         "Your message could not be sent": [\n            null,\n            ""\n         ],\n         "We received an unencrypted message": [\n            null,\n            ""\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            ""\n         ],\n         "Here are the fingerprints, please confirm them with %1$s, outside of this chat.\\n\\nFingerprint for you, %2$s: %3$s\\n\\nFingerprint for %1$s: %4$s\\n\\nIf you have confirmed that the fingerprints match, click OK, otherwise click Cancel.": [\n            null,\n            ""\n         ],\


define('text!he',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=2; plural=(n != 1);",\n            "lang": "he"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "לא מוצפנת"\n         ],\n         "unverified": [\n            null,\n            "לא מאומתת"\n         ],\n         "verified": [\n            null,\n            "מאומתת"\n         ],\n         "finished": [\n            null,\n            "מוגמרת"\n         ],\n         "This contact is busy": [\n            null,\n            "איש קשר זה עסוק"\n         ],\n         "This contact is online": [\n            null,\n            "איש קשר זה מקוון"\n         ],\n         "This contact is offline": [\n            null,\n            "איש קשר זה לא מקוון"\n         ],\n         "This contact is unavailable": [\n            null,\n            "איש קשר זה לא זמין"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "איש קשר זה נעדר למשך זמן ממושך"\n         ],\n         "This contact is away": [\n            null,\n            "איש קשר זה הינו נעדר"\n         ],\n         "Click to hide these contacts": [\n            null,\n            "לחץ כדי להסתיר את אנשי קשר אלה"\n         ],\n         "My contacts": [\n            null,\n            "האנשי קשר שלי"\n         ],\n         "Pending contacts": [\n            null,\n            "אנשי קשר ממתינים"\n         ],\n         "Contact requests": [\n            null,\n            "בקשות איש קשר"\n         ],\n         "Ungrouped": [\n            null,\n            "ללא קבוצה"\n         ],\n         "Contacts": [\n            null,\n            "אנשי קשר"\n         ],\n         "Groups": [\n            null,\n            "קבוצות"\n         ],\n         "Reconnecting": [\n            null,\n            "כעת מתחבר"\n         ],\n         "Error": [\n            null,\n            "שגיאה"\n         ],\n         "Connecting": [\n            null,\n            "כעת מתחבר"\n         ],\n         "Authenticating": [\n            null,\n            "כעת מאמת"\n         ],\n         "Authentication Failed": [\n            null,\n            "אימות נכשל"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "בסס מחדש ישיבה מוצפנת"\n         ],\n         "Generating private key.": [\n            null,\n            "כעת מפיק מפתח פרטי."\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            "הדפדפן שלך עשוי שלא להגיב."\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            "בקשת אימות מאת %1$s\\n\\nהאיש קשר שלך מנסה לאמת את הזהות שלך, בעזרת שאילת השאלה שלהלן.\\n\\n%2$s"\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "לא היתה אפשרות לאמת את זהות משתמש זה."\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            "מחליף מפתח פרטי עם איש קשר."\n         ],\n         "Personal message": [\n            null,\n            "הודעה אישית"\n         ],\n         "Are you sure you want to clear the messages from this room?": [\n            null,\n            "האם אתה בטוח כי ברצונך לטהר את ההודעות מתוך חדר זה?"\n         ],\n         "me": [\n            null,\n            "אני"\n         ],


define('text!hu',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "lang": "hu"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "titkosítatlan"\n         ],\n         "unverified": [\n            null,\n            "nem hitelesített"\n         ],\n         "verified": [\n            null,\n            "hitelesített"\n         ],\n         "finished": [\n            null,\n            "befejezett"\n         ],\n         "This contact is busy": [\n            null,\n            "Elfoglalt"\n         ],\n         "This contact is online": [\n            null,\n            "Elérhető"\n         ],\n         "This contact is offline": [\n            null,\n            "Nincs bejelentkezve"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Elérhetetlen"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "Hosszabb ideje távol"\n         ],\n         "This contact is away": [\n            null,\n            "Távol"\n         ],\n         "Click to hide these contacts": [\n            null,\n            "A csevegő partnerek elrejtése"\n         ],\n         "My contacts": [\n            null,\n            "Kapcsolataim"\n         ],\n         "Pending contacts": [\n            null,\n            "Függőben levő kapcsolatok"\n         ],\n         "Contact requests": [\n            null,\n            "Kapcsolatnak jelölés"\n         ],\n         "Ungrouped": [\n            null,\n            "Nincs csoportosítva"\n         ],\n         "Contacts": [\n            null,\n            "Kapcsolatok"\n         ],\n         "Groups": [\n            null,\n            "Csoportok"\n         ],\n         "Reconnecting": [\n            null,\n            "Kapcsolódás"\n         ],\n         "Error": [\n            null,\n            "Hiba"\n         ],\n         "Connecting": [\n            null,\n            "Kapcsolódás"\n         ],\n         "Authenticating": [\n            null,\n            "Azonosítás"\n         ],\n         "Authentication Failed": [\n            null,\n            "Azonosítási hiba"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "Titkosított kapcsolat újraépítése"\n         ],\n         "Generating private key.": [\n            null,\n            "Privát kulcs generálása"\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            "Előfordulhat, hogy a böngésző futása megáll."\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            "Azonosítási kérés érkezett: %1$s\\n\\nA csevegő partnere hitelesítést kér a következő kérdés megválaszolásával:\\n\\n%2$s"\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "A felhasználó ellenőrzése sikertelen."\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            "Privát kulcs cseréje..."\n         ],\n         "Personal message": [\n            null,\n            "Személyes üzenet"\n         ],\n         "Are you sure you want to clear the messages from this room?": [\n            null,\n            "Törölni szeretné az üzeneteket ebből a szobából?"\n         ],\n         "me": [\n            null,\n            "Én"\n         ],\n         "is typing": [\n            null,\n            "gépel..."\n         ],\n         "has stopped typing": [\n            null,\n            "már nem gépel"\n         ],\n         "Show this menu": [\n            null,\n            "Mutasd a menüt"\n         ],\n         "Write in the third person": [\n            null,\n            "Írjon egyes szám harmadik 


define('text!id',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "lang": "id"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "tak dienkripsi"\n         ],\n         "unverified": [\n            null,\n            "tak diverifikasi"\n         ],\n         "verified": [\n            null,\n            "diverifikasi"\n         ],\n         "finished": [\n            null,\n            "selesai"\n         ],\n         "This contact is busy": [\n            null,\n            "Teman ini sedang sibuk"\n         ],\n         "This contact is online": [\n            null,\n            "Teman ini terhubung"\n         ],\n         "This contact is offline": [\n            null,\n            "Teman ini tidak terhubung"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Teman ini tidak tersedia"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "Teman ini tidak di tempat untuk waktu yang lama"\n         ],\n         "This contact is away": [\n            null,\n            "Teman ini tidak di tempat"\n         ],\n         "My contacts": [\n            null,\n            "Teman saya"\n         ],\n         "Pending contacts": [\n            null,\n            "Teman yang menunggu"\n         ],\n         "Contact requests": [\n            null,\n            "Permintaan pertemanan"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "Teman"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "Kesalahan"\n         ],\n         "Connecting": [\n            null,\n            "Menyambung"\n         ],\n         "Authenticating": [\n            null,\n            "Melakukan otentikasi"\n         ],\n         "Authentication Failed": [\n            null,\n            "Otentikasi gagal"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "Menyambung kembali sesi terenkripsi"\n         ],\n         "Generating private key.": [\n            null,\n            ""\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            ""\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "Tak dapat melakukan verifikasi identitas pengguna ini."\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            ""\n         ],\n         "Personal message": [\n            null,\n            "Pesan pribadi"\n         ],\n         "me": [\n            null,\n            "saya"\n         ],\n         "is typing": [\n            null,\n            ""\n         ],\n         "has stopped typing": [\n            null,\n            ""\n         ],\n         "Show this menu": [\n            null,\n            "Tampilkan menu ini"\n         ],\n         "Write in the third person": [\n            null,\n            "Tulis ini menggunakan bahasa pihak ketiga"\n         ],\n         "Remove messages": [\n            null,\n            "Hapus pesan"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            ""\n         ],\n         "Your message could not be sent": [\n            null,\n            "Pesan anda tak dapat dikirim"\n         ],\n         "We received an unencrypted message": [\n            null,\n            "Kami menerima pesan terenkripsi"\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            "Kami menerima pesan terenkripsi yang gagal dibaca"\n         ],\n         "Here are the fingerprints, please confirm them with %1$s, outside of this chat.\\n\\nFingerprint for you, %2$s: %3$s\\n\\nFingerprint for %1$s


define('text!it',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=2; plural=(n != 1);",\n            "lang": "it"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            ""\n         ],\n         "unverified": [\n            null,\n            ""\n         ],\n         "verified": [\n            null,\n            ""\n         ],\n         "finished": [\n            null,\n            ""\n         ],\n         "This contact is busy": [\n            null,\n            ""\n         ],\n         "This contact is online": [\n            null,\n            ""\n         ],\n         "This contact is offline": [\n            null,\n            ""\n         ],\n         "This contact is away for an extended period": [\n            null,\n            ""\n         ],\n         "This contact is away": [\n            null,\n            ""\n         ],\n         "My contacts": [\n            null,\n            "I miei contatti"\n         ],\n         "Pending contacts": [\n            null,\n            "Contatti in attesa"\n         ],\n         "Contact requests": [\n            null,\n            "Richieste dei contatti"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "Contatti"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "Errore"\n         ],\n         "Connecting": [\n            null,\n            "Connessione in corso"\n         ],\n         "Authenticating": [\n            null,\n            "Autenticazione in corso"\n         ],\n         "Authentication Failed": [\n            null,\n            "Autenticazione fallita"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            ""\n         ],\n         "Generating private key.": [\n            null,\n            ""\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            ""\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            ""\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            ""\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            ""\n         ],\n         "Personal message": [\n            null,\n            "Messaggio personale"\n         ],\n         "me": [\n            null,\n            ""\n         ],\n         "is typing": [\n            null,\n            ""\n         ],\n         "has stopped typing": [\n            null,\n            ""\n         ],\n         "has gone away": [\n            null,\n            ""\n         ],\n         "Show this menu": [\n            null,\n            "Mostra questo menu"\n         ],\n         "Write in the third person": [\n            null,\n            "Scrivi in terza persona"\n         ],\n         "Remove messages": [\n            null,\n            "Rimuovi messaggi"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            ""\n         ],\n         "Your message could not be sent": [\n            null,\n            ""\n         ],\n         "We received an unencrypted message": [\n            null,\n            ""\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            ""\n         ],\n         "Here are the fingerprints, please confirm them with %1$s, outside of this chat.\\n\\nFingerprint for you, %2$s: %3$s\\n\\nFingerprint for %1$s: %4$s\\n\\nIf you have confirmed that the fingerprints match, click OK, otherwise click Cancel.": [\n            null,\n            ""\n         


define('text!ja',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=1; plural=0;",\n            "lang": "JA"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "暗号化されていません"\n         ],\n         "unverified": [\n            null,\n            "検証されていません"\n         ],\n         "verified": [\n            null,\n            "検証されました"\n         ],\n         "finished": [\n            null,\n            "完了"\n         ],\n         "This contact is busy": [\n            null,\n            "この相手先は取り込み中です"\n         ],\n         "This contact is online": [\n            null,\n            "この相手先は在席しています"\n         ],\n         "This contact is offline": [\n            null,\n            "この相手先はオフラインです"\n         ],\n         "This contact is unavailable": [\n            null,\n            "この相手先は不通です"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "この相手先は不在です"\n         ],\n         "This contact is away": [\n            null,\n            "この相手先は離席中です"\n         ],\n         "My contacts": [\n            null,\n            "相手先一覧"\n         ],\n         "Pending contacts": [\n            null,\n            "保留中の相手先"\n         ],\n         "Contact requests": [\n            null,\n            "会話に呼び出し"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "相手先"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "エラー"\n         ],\n         "Connecting": [\n            null,\n            "接続中です"\n         ],\n         "Authenticating": [\n            null,\n            "認証中"\n         ],\n         "Authentication Failed": [\n            null,\n            "認証に失敗"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "暗号化セッションの再接続"\n         ],\n         "Generating private key.": [\n            null,\n            ""\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            ""\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "このユーザーの本人性を検証できませんでした。"\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            ""\n         ],\n         "Personal message": [\n            null,\n            "私信"\n         ],\n         "me": [\n            null,\n            "私"\n         ],\n         "is typing": [\n            null,\n            ""\n         ],\n         "has stopped typing": [\n            null,\n            ""\n         ],\n         "Show this menu": [\n            null,\n            "このメニューを表示"\n         ],\n         "Write in the third person": [\n            null,\n            "第三者に書く"\n         ],\n         "Remove messages": [\n            null,\n            "メッセージを削除"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            ""\n         ],\n         "Your message could not be sent": [\n            null,\n            "メッセージを送信できませんでした"\n         ],\n         "We received an unencrypted message": [\n            null,\n            "暗号化されていないメッセージを受信しました"\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            "読めない暗号<EFBFBD><EFBFBD>


define('text!nb',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=2; plural=(n != 1);",\n            "lang": "nb"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "ukryptertß"\n         ],\n         "unverified": [\n            null,\n            "uverifisert"\n         ],\n         "verified": [\n            null,\n            "verifisert"\n         ],\n         "finished": [\n            null,\n            "ferdig"\n         ],\n         "This contact is busy": [\n            null,\n            "Denne kontakten er opptatt"\n         ],\n         "This contact is online": [\n            null,\n            "Kontakten er pålogget"\n         ],\n         "This contact is offline": [\n            null,\n            "Kontakten er avlogget"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Kontakten er utilgjengelig"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "Kontakten er borte for en lengre periode"\n         ],\n         "This contact is away": [\n            null,\n            "Kontakten er borte"\n         ],\n         "Click to hide these contacts": [\n            null,\n            "Klikk for å skjule disse kontaktene"\n         ],\n         "My contacts": [\n            null,\n            "Mine Kontakter"\n         ],\n         "Pending contacts": [\n            null,\n            "Kontakter som venter på godkjenning"\n         ],\n         "Contact requests": [\n            null,\n            "Kontaktforespørsler"\n         ],\n         "Ungrouped": [\n            null,\n            "Ugrupperte"\n         ],\n         "Contacts": [\n            null,\n            "Kontakter"\n         ],\n         "Groups": [\n            null,\n            "Grupper"\n         ],\n         "Reconnecting": [\n            null,\n            "Kobler til igjen"\n         ],\n         "Error": [\n            null,\n            "Feil"\n         ],\n         "Connecting": [\n            null,\n            "Kobler til"\n         ],\n         "Authenticating": [\n            null,\n            "Godkjenner"\n         ],\n         "Authentication Failed": [\n            null,\n            "Godkjenning mislyktes"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "Gjenopptar kryptert økt"\n         ],\n         "Generating private key.": [\n            null,\n            "Genererer privat nøkkel"\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            "Din nettleser kan bli uresponsiv"\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            "Godkjenningsforespørsel fra %1$s\\n\\nDin nettpratkontakt forsøker å bekrefte din identitet, ved å spørre deg spørsmålet under.\\n\\n%2$s"\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "Kunne ikke bekrefte denne brukerens identitet"\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            "Bytter private nøkler med kontakt"\n         ],\n         "Personal message": [\n            null,\n            "Personlig melding"\n         ],\n         "Are you sure you want to clear the messages from this room?": [\n            null,\n            "Er du sikker på at du vil fjerne meldingene fra dette rommet?"\n         ],\n         "me": [\n            null,\n            "meg"\n         ],\n         "is typing": [\n            null,\n            "skriver"\n         ],\n         "has stopped typing": [\n            null,\n            "har stoppet å skrive"\n         ],\n         "Show this menu": [\n            null,\n            "Viser denne meny


define('text!nl',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=2; plural=(n != 1);",\n            "lang": "nl"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "ongecodeerde"\n         ],\n         "unverified": [\n            null,\n            "niet geverifieerd"\n         ],\n         "verified": [\n            null,\n            "geverifieerd"\n         ],\n         "finished": [\n            null,\n            "klaar"\n         ],\n         "This contact is busy": [\n            null,\n            "Contact is bezet"\n         ],\n         "This contact is online": [\n            null,\n            "Contact is online"\n         ],\n         "This contact is offline": [\n            null,\n            "Contact is offline"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Contact is niet beschikbaar"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "Contact is afwezig voor lange periode"\n         ],\n         "This contact is away": [\n            null,\n            "Conact is afwezig"\n         ],\n         "My contacts": [\n            null,\n            "Mijn contacts"\n         ],\n         "Pending contacts": [\n            null,\n            "Conacten in afwachting van"\n         ],\n         "Contact requests": [\n            null,\n            "Contact uitnodiging"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "Contacten"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "Error"\n         ],\n         "Connecting": [\n            null,\n            "Verbinden"\n         ],\n         "Authenticating": [\n            null,\n            "Authenticeren"\n         ],\n         "Authentication Failed": [\n            null,\n            "Authenticeren mislukt"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "Bezig versleutelde sessie te herstellen"\n         ],\n         "Generating private key.": [\n            null,\n            ""\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            ""\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            ""\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "Niet kon de identiteit van deze gebruiker niet identificeren."\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            ""\n         ],\n         "Personal message": [\n            null,\n            "Persoonlijk bericht"\n         ],\n         "me": [\n            null,\n            "ikzelf"\n         ],\n         "Show this menu": [\n            null,\n            "Toon dit menu"\n         ],\n         "Write in the third person": [\n            null,\n            "Schrijf in de 3de persoon"\n         ],\n         "Remove messages": [\n            null,\n            "Verwijder bericht"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            ""\n         ],\n         "Your message could not be sent": [\n            null,\n            "Je bericht kon niet worden verzonden"\n         ],\n         "We received an unencrypted message": [\n            null,\n            "We ontvingen een unencrypted bericht "\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            "We ontvangen een onleesbaar unencrypted bericht"\n         ],\n         "Here are the fingerprints, please confirm them


define('text!pl',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=3; plural=(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);",\n            "lang": "pl"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "nieszyfrowane"\n         ],\n         "unverified": [\n            null,\n            "niezweryfikowane"\n         ],\n         "verified": [\n            null,\n            "zweryfikowane"\n         ],\n         "finished": [\n            null,\n            "zakończone"\n         ],\n         "This contact is busy": [\n            null,\n            "Kontakt jest zajęty"\n         ],\n         "This contact is online": [\n            null,\n            "Kontakt jest połączony"\n         ],\n         "This contact is offline": [\n            null,\n            "Kontakt jest niepołączony"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Kontakt jest niedostępny"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "Kontakt jest nieobecny przez dłuższą chwilę"\n         ],\n         "This contact is away": [\n            null,\n            "Kontakt jest nieobecny"\n         ],\n         "Click to hide these contacts": [\n            null,\n            "Kliknij aby schować te kontakty"\n         ],\n         "My contacts": [\n            null,\n            "Moje kontakty"\n         ],\n         "Pending contacts": [\n            null,\n            "Kontakty oczekujące"\n         ],\n         "Contact requests": [\n            null,\n            "Zaproszenia do kontaktu"\n         ],\n         "Ungrouped": [\n            null,\n            "Niezgrupowane"\n         ],\n         "Contacts": [\n            null,\n            "Kontakty"\n         ],\n         "Groups": [\n            null,\n            "Grupy"\n         ],\n         "Reconnecting": [\n            null,\n            "Przywracam połączenie"\n         ],\n         "Error": [\n            null,\n            "Błąd"\n         ],\n         "Connecting": [\n            null,\n            "Łączę się"\n         ],\n         "Authenticating": [\n            null,\n            "Autoryzacja"\n         ],\n         "Authentication Failed": [\n            null,\n            "Autoryzacja nie powiodła się"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "Przywrócenie sesji szyfrowanej"\n         ],\n         "Generating private key.": [\n            null,\n            "Generuję klucz prywatny."\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            "Twoja przeglądarka może nieco zwolnić."\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            "Prośba o autoryzację od %1$s\\n\\nKontakt próbuje zweryfikować twoją tożsamość, zadając ci pytanie poniżej.\\n\\n%2$s"\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "Nie jestem w stanie zweryfikować tożsamości kontaktu."\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            "Wymieniam klucze szyfrujące z kontaktem."\n         ],\n         "Personal message": [\n            null,\n            "Wiadomość osobista"\n         ],\n         "Are you sure you want to clear the messages from this room?": [\n            null,\n            "Potwierdź czy rzeczywiście chcesz wyczyścić wiadomości z tego pokoju?"\n         ],\n         "me": [\n            null,\n            "ja"\n         ],\n         "is typing": [\n            null,\n            "pisze"\n         ],\n         "has stopped typing": [\n            null,\n         


define('text!pt_BR',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "plural_forms": "nplurals=2; plural=(n > 1);",\n            "lang": "pt_BR"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "não-criptografado"\n         ],\n         "unverified": [\n            null,\n            "não-verificado"\n         ],\n         "verified": [\n            null,\n            "verificado"\n         ],\n         "finished": [\n            null,\n            "finalizado"\n         ],\n         "This contact is busy": [\n            null,\n            "Este contato está ocupado"\n         ],\n         "This contact is online": [\n            null,\n            "Este contato está online"\n         ],\n         "This contact is offline": [\n            null,\n            "Este contato está offline"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Este contato está indisponível"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "Este contato está ausente por um longo período"\n         ],\n         "This contact is away": [\n            null,\n            "Este contato está ausente"\n         ],\n         "My contacts": [\n            null,\n            "Meus contatos"\n         ],\n         "Pending contacts": [\n            null,\n            "Contados pendentes"\n         ],\n         "Contact requests": [\n            null,\n            "Solicitação de contatos"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "Contatos"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "Erro"\n         ],\n         "Connecting": [\n            null,\n            "Conectando"\n         ],\n         "Authenticating": [\n            null,\n            "Autenticando"\n         ],\n         "Authentication Failed": [\n            null,\n            "Falha de autenticação"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "Reestabelecendo sessão criptografada"\n         ],\n         "Generating private key.": [\n            null,\n            "Gerando chave-privada."\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            "Seu navegador pode parar de responder."\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "Não foi possível verificar a identidade deste usuário."\n         ],\n         "Personal message": [\n            null,\n            "Mensagem pessoal"\n         ],\n         "me": [\n            null,\n            "eu"\n         ],\n         "Show this menu": [\n            null,\n            "Mostrar o menu"\n         ],\n         "Write in the third person": [\n            null,\n            "Escrever em terceira pessoa"\n         ],\n         "Remove messages": [\n            null,\n            "Remover mensagens"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            "Tem certeza que deseja limpar as mensagens dessa caixa?"\n         ],\n         "Your message could not be sent": [\n            null,\n            "Sua mensagem não pode ser enviada"\n         ],\n         "We received an unencrypted message": [\n            null,\n            "Recebemos uma mensagem não-criptografada"\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            "Recebemos uma mensagem não-criptografada ilegível"\n         ],\n         "Here are the fingerprints, please confirm them with %1$s, outside of this chat.\\n\\nFingerprint for you, %2$s: %3$s\\n\\nFingerprint for %1$s: %4$s\\n\\nIf you have confirmed 


define('text!ru',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "lang": "ru"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "не зашифровано"\n         ],\n         "unverified": [\n            null,\n            "непроверено"\n         ],\n         "verified": [\n            null,\n            "проверено"\n         ],\n         "finished": [\n            null,\n            "закончено"\n         ],\n         "This contact is busy": [\n            null,\n            "Занят"\n         ],\n         "This contact is online": [\n            null,\n            "В сети"\n         ],\n         "This contact is offline": [\n            null,\n            "Не в сети"\n         ],\n         "This contact is unavailable": [\n            null,\n            "Не доступен"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "На долго отошёл"\n         ],\n         "This contact is away": [\n            null,\n            "Отошёл"\n         ],\n         "My contacts": [\n            null,\n            "Контакты"\n         ],\n         "Pending contacts": [\n            null,\n            "Собеседники ожидающие авторизации"\n         ],\n         "Contact requests": [\n            null,\n            "Запросы на авторизацию"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "Контакты"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "Ошибка"\n         ],\n         "Connecting": [\n            null,\n            "Соединение"\n         ],\n         "Authenticating": [\n            null,\n            "Авторизация"\n         ],\n         "Authentication Failed": [\n            null,\n            "Не удалось авторизоваться"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            ""\n         ],\n         "Generating private key.": [\n            null,\n            ""\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            ""\n         ],\n         "Authentication request from %1$s\\n\\nYour chat contact is attempting to verify your identity, by asking you the question below.\\n\\n%2$s": [\n            null,\n            ""\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            ""\n         ],\n         "Exchanging private key with contact.": [\n            null,\n            ""\n         ],\n         "Personal message": [\n            null,\n            "Введите сообщение"\n         ],\n         "me": [\n            null,\n            "Я"\n         ],\n         "is typing": [\n            null,\n            ""\n         ],\n         "has stopped typing": [\n            null,\n            ""\n         ],\n         "Show this menu": [\n            null,\n            "Показать это меню"\n         ],\n         "Write in the third person": [\n            null,\n            ""\n         ],\n         "Remove messages": [\n            null,\n            "Удалить сообщения"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            ""\n         ],\n         "Your message could not be sent": [\n            null,\n            "Ваше сообщение не послано"\n         ],\n         "We received an unencrypted message": [\n            null,\n            ""\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            ""


define('text!zh',[],function () { return '{\n   "domain": "converse",\n   "locale_data": {\n      "converse": {\n         "": {\n            "domain": "converse",\n            "lang": "zh"\n         },\n         " e.g. conversejs.org": [\n            null,\n            ""\n         ],\n         "unencrypted": [\n            null,\n            "未加密"\n         ],\n         "unverified": [\n            null,\n            "未验证"\n         ],\n         "verified": [\n            null,\n            "已验证"\n         ],\n         "finished": [\n            null,\n            "结束了"\n         ],\n         "This contact is busy": [\n            null,\n            "对方忙碌中"\n         ],\n         "This contact is online": [\n            null,\n            "对方在线中"\n         ],\n         "This contact is offline": [\n            null,\n            "对方已下线"\n         ],\n         "This contact is unavailable": [\n            null,\n            "对方免打扰"\n         ],\n         "This contact is away for an extended period": [\n            null,\n            "对方暂时离开"\n         ],\n         "This contact is away": [\n            null,\n            "对方离开"\n         ],\n         "My contacts": [\n            null,\n            "我的好友列表"\n         ],\n         "Pending contacts": [\n            null,\n            "保留中的联系人"\n         ],\n         "Contact requests": [\n            null,\n            "来自好友的请求"\n         ],\n         "Ungrouped": [\n            null,\n            ""\n         ],\n         "Contacts": [\n            null,\n            "联系人"\n         ],\n         "Groups": [\n            null,\n            ""\n         ],\n         "Error": [\n            null,\n            "错误"\n         ],\n         "Connecting": [\n            null,\n            "连接中"\n         ],\n         "Authenticating": [\n            null,\n            "验证中"\n         ],\n         "Authentication Failed": [\n            null,\n            "验证失败"\n         ],\n         "Re-establishing encrypted session": [\n            null,\n            "重新建立加密会话"\n         ],\n         "Generating private key.": [\n            null,\n            "正在生成私钥"\n         ],\n         "Your browser might become unresponsive.": [\n            null,\n            "您的浏览器可能会暂时无响应"\n         ],\n         "Could not verify this user\'s identify.": [\n            null,\n            "无法验证对方信息。"\n         ],\n         "Personal message": [\n            null,\n            "私信"\n         ],\n         "me": [\n            null,\n            "我"\n         ],\n         "is typing": [\n            null,\n            ""\n         ],\n         "has stopped typing": [\n            null,\n            ""\n         ],\n         "Show this menu": [\n            null,\n            "显示此项菜单"\n         ],\n         "Write in the third person": [\n            null,\n            "以第三者身份写"\n         ],\n         "Remove messages": [\n            null,\n            "移除消息"\n         ],\n         "Are you sure you want to clear the messages from this chat box?": [\n            null,\n            "你确定清除此次的聊天记录吗？"\n         ],\n         "Your message could not be sent": [\n            null,\n            "您的消息无法送出"\n         ],\n         "We received an unencrypted message": [\n            null,\n            "我们收到了一条未加密的信息"\n         ],\n         "We received an unreadable encrypted message": [\n            null,\n            "我们收到一条无法读取的信息"\n         ],\n         "Here are the fingerprints, please confirm them with %1$s, outside of this chat.\\n\\nFingerprint for you, %2$s: %3$s\\n\\nFingerprint for %1$s: %4$s\\n\\nIf you have confirmed that the fingerprints match, click OK, otherwise click Cancel.": [\n            null,\n            "这里是指纹。请与 %1$

/*
 * This file specifies the language dependencies.
 *
 * Translations take up a lot of space and you are therefore advised to remove
 * from here any languages that you don't need.
 */
(function (root, factory) {
    define("locales", ['jquery', 'jed', 
        'text!af',
        'text!de',
        'text!en',
        'text!es',
        'text!fr',
        'text!he',
        'text!hu',
        'text!id',
        'text!it',
        'text!ja',
        'text!nb',
        'text!nl',
        'text!pl',
        'text!pt_BR',
        'text!ru',
        'text!zh'
        ], function ($, Jed) {
            root.locales = {
                'af':     arguments[2],
                'de':     arguments[3],
                'en':     arguments[4],
                'es':     arguments[5],
                'fr':     arguments[6],
                'he':     arguments[7],
                'hu':     arguments[8],
                'id':     arguments[9],
                'it':     arguments[10],
                'ja':     arguments[11],
                'nb':     arguments[12],
                'nl':     arguments[13],
                'pl':     arguments[14],
                'pt-br':  arguments[15],
                'ru':     arguments[16],
                'zh':     arguments[17]
            };
            return root.locales;
        });
})(this);

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        define('utils',["jquery", "converse-templates", "locales"], factory);
    } else {
        root.utils = factory(jQuery, templates);
    }
}(this, function ($, templates, locales) {
    

    var XFORM_TYPE_MAP = {
        'text-private': 'password',
        'text-single': 'textline',
        'fixed': 'label',
        'boolean': 'checkbox',
        'hidden': 'hidden',
        'jid-multi': 'textarea',
        'list-single': 'dropdown',
        'list-multi': 'dropdown'
    };

    $.expr[':'].emptyVal = function(obj){
        return obj.value === '';
    };

    $.fn.hasScrollBar = function() {
        if (!$.contains(document, this.get(0))) {
            return false;
        }
        if(this.parent().height() < this.get(0).scrollHeight) {
            return true;
        }
        return false;
    };

    $.fn.addHyperlinks = function () {
        if (this.length > 0) {
            this.each(function (i, obj) {
                var x = $(obj).html();
                var list = x.match(/\b(https?:\/\/|www\.|https?:\/\/www\.)[^\s<]{2,200}\b/g );
                if (list) {
                    for (i=0; i<list.length; i++) {
                        var prot = list[i].indexOf('http://') === 0 || list[i].indexOf('https://') === 0 ? '' : 'http://';
                        var escaped_url = encodeURI(decodeURI(list[i])).replace(/[!'()]/g, escape).replace(/\*/g, "%2A");
                        x = x.replace(list[i], "<a target='_blank' href='" + prot + escaped_url + "'>"+ list[i] + "</a>" );
                    }
                }
                $(obj).html(x);
            });
        }
        return this;
    };

    var utils = {
        // Translation machinery
        // ---------------------
        __: function (str) {
            // Translation factory
            if (typeof this.i18n === "undefined") {
                this.i18n = locales.en;
            }
            if (typeof this.i18n === "string") {
                this.i18n = $.parseJSON(this.i18n);
            }
            if (typeof this.jed === "undefined") {
                this.jed = new Jed(this.i18n);
            }
            var t = this.jed.translate(str);
            if (arguments.length>1) {
                return t.fetch.apply(t, [].slice.call(arguments,1));
            } else {
                return t.fetch();
            }
        },

        ___: function (str) {
            /* XXX: This is part of a hack to get gettext to scan strings to be
                * translated. Strings we cannot send to the function above because
                * they require variable interpolation and we don't yet have the
                * variables at scan time.
                *
                * See actionInfoMessages
                */
            return str;
        },

        webForm2xForm: function (field) {
            /* Takes an HTML DOM and turns it into an XForm field.
            *
            * Parameters:
            *      (DOMElement) field - the field to convert
            */
            var $input = $(field), value;
            if ($input.is('[type=checkbox]')) {
                value = $input.is(':checked') && 1 || 0;
            } else if ($input.is('textarea')) {
                value = [];
                var lines = $input.val().split('\n');
                for( var vk=0; vk<lines.length; vk++) {
                    var val = $.trim(lines[vk]);
                    if (val === '')
                        continue;
                    value.push(val);
                }
            } else {
                value = $input.val();
            }
            return $(templates.field({
                name: $input.attr('name'),
                value: value
            }))[0];
        },

        xForm2webForm: function ($field, $stanza) {
            /* Takes a field in XMPP XForm (XEP-004: Data Forms) format
            * and turns it into a HTML DOM field.
            *
            *  Parameters:
            *      (XMLElement) field - the field to convert
            */

            // FIXME: take <required> into consideration
            var options = [], j, $options, $values, value, values;

            if ($field.attr('type') == 'list-single' || $field.attr('type') == 'list-multi') {
                values = [];
                $values = $field.children('value');
                for (j=0; j<$values.length; j++) {
                    values.push($($values[j]).text());
                }
                $options = $field.children('option');
                for (j=0; j<$options.length; j++) {
                    value = $($options[j]).find('value').text();
                    options.push(templates.select_option({
                        value: value,
                        label: $($options[j]).attr('label'),
                        selected: (values.indexOf(value) >= 0),
                        required: $field.find('required').length
                    }));
                }
                return templates.form_select({
                    name: $field.attr('var'),
                    label: $field.attr('label'),
                    options: options.join(''),
                    multiple: ($field.attr('type') == 'list-multi'),
                    required: $field.find('required').length
                });
            } else if ($field.attr('type') == 'fixed') {
                return $('<p class="form-help">').text($field.find('value').text());
            } else if ($field.attr('type') == 'jid-multi') {
                return templates.form_textarea({
                    name: $field.attr('var'),
                    label: $field.attr('label') || '',
                    value: $field.find('value').text(),
                    required: $field.find('required').length
                });
            } else if ($field.attr('type') == 'boolean') {
                return templates.form_checkbox({
                    name: $field.attr('var'),
                    type: XFORM_TYPE_MAP[$field.attr('type')],
                    label: $field.attr('label') || '',
                    checked: $field.find('value').text() === "1" && 'checked="1"' || '',
                    required: $field.find('required').length
                });
            } else if ($field.attr('type') && $field.attr('var') === 'username') {
                return templates.form_username({
                    domain: ' @'+this.domain,
                    name: $field.attr('var'),
                    type: XFORM_TYPE_MAP[$field.attr('type')],
                    label: $field.attr('label') || '',
                    value: $field.find('value').text(),
                    required: $field.find('required').length
                });
            } else if ($field.attr('type')) {
                return templates.form_input({
                    name: $field.attr('var'),
                    type: XFORM_TYPE_MAP[$field.attr('type')],
                    label: $field.attr('label') || '',
                    value: $field.find('value').text(),
                    required: $field.find('required').length
                });
            } else {
                if ($field.attr('var') === 'ocr') { // Captcha
                    return _.reduce(_.map($field.find('uri'),
                            $.proxy(function (uri) {
                                return templates.form_captcha({
                                    label: this.$field.attr('label'),
                                    name: this.$field.attr('var'),
                                    data: this.$stanza.find('data[cid="'+uri.textContent.replace(/^cid:/, '')+'"]').text(),
                                    type: uri.getAttribute('type'),
                                    required: this.$field.find('required').length
                                });
                            }, {'$stanza': $stanza, '$field': $field})
                        ),
                        function (memo, num) { return memo + num; }, ''
                    );
                }
            }
        }
    };
    return utils;
}));

/*!
 * jQuery Browser Plugin 0.0.7
 * https://github.com/gabceb/jquery-browser-plugin
 *
 * Original jquery-browser code Copyright 2005, 2013 jQuery Foundation, Inc. and other contributors
 * http://jquery.org/license
 *
 * Modifications Copyright 2014 Gabriel Cebrian
 * https://github.com/gabceb
 *
 * Released under the MIT license
 *
 * Date: 12-12-2014
 */

(function (root, factory) {
  if (typeof define === 'function' && define.amd) {
    // AMD. Register as an anonymous module.
    define('jquery.browser',['jquery'], function ($) {
      factory($, root);
    });
  } else {
    // Browser globals
    factory(jQuery, root);
  }
}(this, function(jQuery, window) {
  

  var matched, browser;

  jQuery.uaMatch = function( ua ) {
    ua = ua.toLowerCase();

    var match = /(edge)\/([\w.]+)/.exec( ua ) ||
        /(opr)[\/]([\w.]+)/.exec( ua ) ||
        /(chrome)[ \/]([\w.]+)/.exec( ua ) ||
        /(version)(applewebkit)[ \/]([\w.]+).*(safari)[ \/]([\w.]+)/.exec( ua ) ||
        /(webkit)[ \/]([\w.]+).*(version)[ \/]([\w.]+).*(safari)[ \/]([\w.]+)/.exec( ua ) ||
        /(webkit)[ \/]([\w.]+)/.exec( ua ) ||
        /(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
        /(msie) ([\w.]+)/.exec( ua ) ||
        ua.indexOf("trident") >= 0 && /(rv)(?::| )([\w.]+)/.exec( ua ) ||
        ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
        [];

    var platform_match = /(ipad)/.exec( ua ) ||
        /(ipod)/.exec( ua ) ||
        /(iphone)/.exec( ua ) ||
        /(kindle)/.exec( ua ) ||
        /(silk)/.exec( ua ) ||
        /(android)/.exec( ua ) ||
        /(windows phone)/.exec( ua ) ||
        /(win)/.exec( ua ) ||
        /(mac)/.exec( ua ) ||
        /(linux)/.exec( ua ) ||
        /(cros)/.exec( ua ) ||
        /(playbook)/.exec( ua ) ||
        /(bb)/.exec( ua ) ||
        /(blackberry)/.exec( ua ) ||
        [];

    return {
      browser: match[ 5 ] || match[ 3 ] || match[ 1 ] || "",
      version: match[ 2 ] || match[ 4 ] || "0",
      versionNumber: match[ 4 ] || match[ 2 ] || "0",
      platform: platform_match[ 0 ] || ""
    };
  };

  matched = jQuery.uaMatch( window.navigator.userAgent );
  browser = {};

  if ( matched.browser ) {
    browser[ matched.browser ] = true;
    browser.version = matched.version;
    browser.versionNumber = parseInt(matched.versionNumber, 10);
  }

  if ( matched.platform ) {
    browser[ matched.platform ] = true;
  }

  // These are all considered mobile platforms, meaning they run a mobile browser
  if ( browser.android || browser.bb || browser.blackberry || browser.ipad || browser.iphone ||
    browser.ipod || browser.kindle || browser.playbook || browser.silk || browser[ "windows phone" ]) {
    browser.mobile = true;
  }

  // These are all considered desktop platforms, meaning they run a desktop browser
  if ( browser.cros || browser.mac || browser.linux || browser.win ) {
    browser.desktop = true;
  }

  // Chrome, Opera 15+ and Safari are webkit based browsers
  if ( browser.chrome || browser.opr || browser.safari ) {
    browser.webkit = true;
  }

  // IE11 has a new token so we will assign it msie to avoid breaking changes
  // IE12 disguises itself as Chrome, but adds a new Edge token.
  if ( browser.rv || browser.edge ) {
    var ie = "msie";

    matched.browser = ie;
    browser[ie] = true;
  }

  // Blackberry browsers are marked as Safari on BlackBerry
  if ( browser.safari && browser.blackberry ) {
    var blackberry = "blackberry";

    matched.browser = blackberry;
    browser[blackberry] = true;
  }

  // Playbook browsers are marked as Safari on Playbook
  if ( browser.safari && browser.playbook ) {
    var playbook = "playbook";

    matched.browser = playbook;
    browser[playbook] = true;
  }

  // BB10 is a newer OS version of BlackBerry
  if ( browser.bb ) {
    var bb = "blackberry";

    matched.browser = bb;
    browser[bb] = true;
  }

  // Opera 15+ are identified as opr
  if ( browser.opr ) {
    var opera = "opera";

    matched.browser = opera;
    browser[opera] = true;
  }

  // Stock Android browsers are marked as Safari on Android.
  if ( browser.safari && browser.android ) {
    var android = "android";

    matched.browser = android;
    browser[android] = true;
  }

  // Kindle browsers are marked as Safari on Kindle
  if ( browser.safari && browser.kindle ) {
    var kindle = "kindle";

    matched.browser = kindle;
    browser[kindle] = true;
  }

   // Kindle Silk browsers are marked as Safari on Kindle
  if ( browser.safari && browser.silk ) {
    var silk = "silk";

    matched.browser = silk;
    browser[silk] = true;
  }

  // Assign the name and platform variable
  browser.name = matched.browser;
  browser.platform = matched.platform;

  jQuery.browser = browser;
  return browser;
}));

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
/**
 * CryptoJS core components.
 */
var CryptoJS = CryptoJS || (function (Math, undefined) {
    /**
     * CryptoJS namespace.
     */
    var C = {};

    /**
     * Library namespace.
     */
    var C_lib = C.lib = {};

    /**
     * Base object for prototypal inheritance.
     */
    var Base = C_lib.Base = (function () {
        function F() {}

        return {
            /**
             * Creates a new object that inherits from this object.
             *
             * @param {Object} overrides Properties to copy into the new object.
             *
             * @return {Object} The new object.
             *
             * @static
             *
             * @example
             *
             *     var MyType = CryptoJS.lib.Base.extend({
             *         field: 'value',
             *
             *         method: function () {
             *         }
             *     });
             */
            extend: function (overrides) {
                // Spawn
                F.prototype = this;
                var subtype = new F();

                // Augment
                if (overrides) {
                    subtype.mixIn(overrides);
                }

                // Create default initializer
                if (!subtype.hasOwnProperty('init')) {
                    subtype.init = function () {
                        subtype.$super.init.apply(this, arguments);
                    };
                }

                // Initializer's prototype is the subtype object
                subtype.init.prototype = subtype;

                // Reference supertype
                subtype.$super = this;

                return subtype;
            },

            /**
             * Extends this object and runs the init method.
             * Arguments to create() will be passed to init().
             *
             * @return {Object} The new object.
             *
             * @static
             *
             * @example
             *
             *     var instance = MyType.create();
             */
            create: function () {
                var instance = this.extend();
                instance.init.apply(instance, arguments);

                return instance;
            },

            /**
             * Initializes a newly created object.
             * Override this method to add some logic when your objects are created.
             *
             * @example
             *
             *     var MyType = CryptoJS.lib.Base.extend({
             *         init: function () {
             *             // ...
             *         }
             *     });
             */
            init: function () {
            },

            /**
             * Copies properties into this object.
             *
             * @param {Object} properties The properties to mix in.
             *
             * @example
             *
             *     MyType.mixIn({
             *         field: 'value'
             *     });
             */
            mixIn: function (properties) {
                for (var propertyName in properties) {
                    if (properties.hasOwnProperty(propertyName)) {
                        this[propertyName] = properties[propertyName];
                    }
                }

                // IE won't copy toString using the loop above
                if (properties.hasOwnProperty('toString')) {
                    this.toString = properties.toString;
                }
            },

            /**
             * Creates a copy of this object.
             *
             * @return {Object} The clone.
             *
             * @example
             *
             *     var clone = instance.clone();
             */
            clone: function () {
                return this.init.prototype.extend(this);
            }
        };
    }());

    /**
     * An array of 32-bit words.
     *
     * @property {Array} words The array of 32-bit words.
     * @property {number} sigBytes The number of significant bytes in this word array.
     */
    var WordArray = C_lib.WordArray = Base.extend({
        /**
         * Initializes a newly created word array.
         *
         * @param {Array} words (Optional) An array of 32-bit words.
         * @param {number} sigBytes (Optional) The number of significant bytes in the words.
         *
         * @example
         *
         *     var wordArray = CryptoJS.lib.WordArray.create();
         *     var wordArray = CryptoJS.lib.WordArray.create([0x00010203, 0x04050607]);
         *     var wordArray = CryptoJS.lib.WordArray.create([0x00010203, 0x04050607], 6);
         */
        init: function (words, sigBytes) {
            words = this.words = words || [];

            if (sigBytes != undefined) {
                this.sigBytes = sigBytes;
            } else {
                this.sigBytes = words.length * 4;
            }
        },

        /**
         * Converts this word array to a string.
         *
         * @param {Encoder} encoder (Optional) The encoding strategy to use. Default: CryptoJS.enc.Hex
         *
         * @return {string} The stringified word array.
         *
         * @example
         *
         *     var string = wordArray + '';
         *     var string = wordArray.toString();
         *     var string = wordArray.toString(CryptoJS.enc.Utf8);
         */
        toString: function (encoder) {
            return (encoder || Hex).stringify(this);
        },

        /**
         * Concatenates a word array to this word array.
         *
         * @param {WordArray} wordArray The word array to append.
         *
         * @return {WordArray} This word array.
         *
         * @example
         *
         *     wordArray1.concat(wordArray2);
         */
        concat: function (wordArray) {
            // Shortcuts
            var thisWords = this.words;
            var thatWords = wordArray.words;
            var thisSigBytes = this.sigBytes;
            var thatSigBytes = wordArray.sigBytes;

            // Clamp excess bits
            this.clamp();

            // Concat
            if (thisSigBytes % 4) {
                // Copy one byte at a time
                for (var i = 0; i < thatSigBytes; i++) {
                    var thatByte = (thatWords[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
                    thisWords[(thisSigBytes + i) >>> 2] |= thatByte << (24 - ((thisSigBytes + i) % 4) * 8);
                }
            } else if (thatWords.length > 0xffff) {
                // Copy one word at a time
                for (var i = 0; i < thatSigBytes; i += 4) {
                    thisWords[(thisSigBytes + i) >>> 2] = thatWords[i >>> 2];
                }
            } else {
                // Copy all words at once
                thisWords.push.apply(thisWords, thatWords);
            }
            this.sigBytes += thatSigBytes;

            // Chainable
            return this;
        },

        /**
         * Removes insignificant bits.
         *
         * @example
         *
         *     wordArray.clamp();
         */
        clamp: function () {
            // Shortcuts
            var words = this.words;
            var sigBytes = this.sigBytes;

            // Clamp
            words[sigBytes >>> 2] &= 0xffffffff << (32 - (sigBytes % 4) * 8);
            words.length = Math.ceil(sigBytes / 4);
        },

        /**
         * Creates a copy of this word array.
         *
         * @return {WordArray} The clone.
         *
         * @example
         *
         *     var clone = wordArray.clone();
         */
        clone: function () {
            var clone = Base.clone.call(this);
            clone.words = this.words.slice(0);

            return clone;
        },

        /**
         * Creates a word array filled with random bytes.
         *
         * @param {number} nBytes The number of random bytes to generate.
         *
         * @return {WordArray} The random word array.
         *
         * @static
         *
         * @example
         *
         *     var wordArray = CryptoJS.lib.WordArray.random(16);
         */
        random: function (nBytes) {
            var words = [];
            for (var i = 0; i < nBytes; i += 4) {
                words.push((Math.random() * 0x100000000) | 0);
            }

            return new WordArray.init(words, nBytes);
        }
    });

    /**
     * Encoder namespace.
     */
    var C_enc = C.enc = {};

    /**
     * Hex encoding strategy.
     */
    var Hex = C_enc.Hex = {
        /**
         * Converts a word array to a hex string.
         *
         * @param {WordArray} wordArray The word array.
         *
         * @return {string} The hex string.
         *
         * @static
         *
         * @example
         *
         *     var hexString = CryptoJS.enc.Hex.stringify(wordArray);
         */
        stringify: function (wordArray) {
            // Shortcuts
            var words = wordArray.words;
            var sigBytes = wordArray.sigBytes;

            // Convert
            var hexChars = [];
            for (var i = 0; i < sigBytes; i++) {
                var bite = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
                hexChars.push((bite >>> 4).toString(16));
                hexChars.push((bite & 0x0f).toString(16));
            }

            return hexChars.join('');
        },

        /**
         * Converts a hex string to a word array.
         *
         * @param {string} hexStr The hex string.
         *
         * @return {WordArray} The word array.
         *
         * @static
         *
         * @example
         *
         *     var wordArray = CryptoJS.enc.Hex.parse(hexString);
         */
        parse: function (hexStr) {
            // Shortcut
            var hexStrLength = hexStr.length;

            // Convert
            var words = [];
            for (var i = 0; i < hexStrLength; i += 2) {
                words[i >>> 3] |= parseInt(hexStr.substr(i, 2), 16) << (24 - (i % 8) * 4);
            }

            return new WordArray.init(words, hexStrLength / 2);
        }
    };

    /**
     * Latin1 encoding strategy.
     */
    var Latin1 = C_enc.Latin1 = {
        /**
         * Converts a word array to a Latin1 string.
         *
         * @param {WordArray} wordArray The word array.
         *
         * @return {string} The Latin1 string.
         *
         * @static
         *
         * @example
         *
         *     var latin1String = CryptoJS.enc.Latin1.stringify(wordArray);
         */
        stringify: function (wordArray) {
            // Shortcuts
            var words = wordArray.words;
            var sigBytes = wordArray.sigBytes;

            // Convert
            var latin1Chars = [];
            for (var i = 0; i < sigBytes; i++) {
                var bite = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
                latin1Chars.push(String.fromCharCode(bite));
            }

            return latin1Chars.join('');
        },

        /**
         * Converts a Latin1 string to a word array.
         *
         * @param {string} latin1Str The Latin1 string.
         *
         * @return {WordArray} The word array.
         *
         * @static
         *
         * @example
         *
         *     var wordArray = CryptoJS.enc.Latin1.parse(latin1String);
         */
        parse: function (latin1Str) {
            // Shortcut
            var latin1StrLength = latin1Str.length;

            // Convert
            var words = [];
            for (var i = 0; i < latin1StrLength; i++) {
                words[i >>> 2] |= (latin1Str.charCodeAt(i) & 0xff) << (24 - (i % 4) * 8);
            }

            return new WordArray.init(words, latin1StrLength);
        }
    };

    /**
     * UTF-8 encoding strategy.
     */
    var Utf8 = C_enc.Utf8 = {
        /**
         * Converts a word array to a UTF-8 string.
         *
         * @param {WordArray} wordArray The word array.
         *
         * @return {string} The UTF-8 string.
         *
         * @static
         *
         * @example
         *
         *     var utf8String = CryptoJS.enc.Utf8.stringify(wordArray);
         */
        stringify: function (wordArray) {
            try {
                return decodeURIComponent(escape(Latin1.stringify(wordArray)));
            } catch (e) {
                throw new Error('Malformed UTF-8 data');
            }
        },

        /**
         * Converts a UTF-8 string to a word array.
         *
         * @param {string} utf8Str The UTF-8 string.
         *
         * @return {WordArray} The word array.
         *
         * @static
         *
         * @example
         *
         *     var wordArray = CryptoJS.enc.Utf8.parse(utf8String);
         */
        parse: function (utf8Str) {
            return Latin1.parse(unescape(encodeURIComponent(utf8Str)));
        }
    };

    /**
     * Abstract buffered block algorithm template.
     *
     * The property blockSize must be implemented in a concrete subtype.
     *
     * @property {number} _minBufferSize The number of blocks that should be kept unprocessed in the buffer. Default: 0
     */
    var BufferedBlockAlgorithm = C_lib.BufferedBlockAlgorithm = Base.extend({
        /**
         * Resets this block algorithm's data buffer to its initial state.
         *
         * @example
         *
         *     bufferedBlockAlgorithm.reset();
         */
        reset: function () {
            // Initial values
            this._data = new WordArray.init();
            this._nDataBytes = 0;
        },

        /**
         * Adds new data to this block algorithm's buffer.
         *
         * @param {WordArray|string} data The data to append. Strings are converted to a WordArray using UTF-8.
         *
         * @example
         *
         *     bufferedBlockAlgorithm._append('data');
         *     bufferedBlockAlgorithm._append(wordArray);
         */
        _append: function (data) {
            // Convert string to WordArray, else assume WordArray already
            if (typeof data == 'string') {
                data = Utf8.parse(data);
            }

            // Append
            this._data.concat(data);
            this._nDataBytes += data.sigBytes;
        },

        /**
         * Processes available data blocks.
         *
         * This method invokes _doProcessBlock(offset), which must be implemented by a concrete subtype.
         *
         * @param {boolean} doFlush Whether all blocks and partial blocks should be processed.
         *
         * @return {WordArray} The processed data.
         *
         * @example
         *
         *     var processedData = bufferedBlockAlgorithm._process();
         *     var processedData = bufferedBlockAlgorithm._process(!!'flush');
         */
        _process: function (doFlush) {
            // Shortcuts
            var data = this._data;
            var dataWords = data.words;
            var dataSigBytes = data.sigBytes;
            var blockSize = this.blockSize;
            var blockSizeBytes = blockSize * 4;

            // Count blocks ready
            var nBlocksReady = dataSigBytes / blockSizeBytes;
            if (doFlush) {
                // Round up to include partial blocks
                nBlocksReady = Math.ceil(nBlocksReady);
            } else {
                // Round down to include only full blocks,
                // less the number of blocks that must remain in the buffer
                nBlocksReady = Math.max((nBlocksReady | 0) - this._minBufferSize, 0);
            }

            // Count words ready
            var nWordsReady = nBlocksReady * blockSize;

            // Count bytes ready
            var nBytesReady = Math.min(nWordsReady * 4, dataSigBytes);

            // Process blocks
            if (nWordsReady) {
                for (var offset = 0; offset < nWordsReady; offset += blockSize) {
                    // Perform concrete-algorithm logic
                    this._doProcessBlock(dataWords, offset);
                }

                // Remove processed words
                var processedWords = dataWords.splice(0, nWordsReady);
                data.sigBytes -= nBytesReady;
            }

            // Return processed words
            return new WordArray.init(processedWords, nBytesReady);
        },

        /**
         * Creates a copy of this object.
         *
         * @return {Object} The clone.
         *
         * @example
         *
         *     var clone = bufferedBlockAlgorithm.clone();
         */
        clone: function () {
            var clone = Base.clone.call(this);
            clone._data = this._data.clone();

            return clone;
        },

        _minBufferSize: 0
    });

    /**
     * Abstract hasher template.
     *
     * @property {number} blockSize The number of 32-bit words this hasher operates on. Default: 16 (512 bits)
     */
    var Hasher = C_lib.Hasher = BufferedBlockAlgorithm.extend({
        /**
         * Configuration options.
         */
        cfg: Base.extend(),

        /**
         * Initializes a newly created hasher.
         *
         * @param {Object} cfg (Optional) The configuration options to use for this hash computation.
         *
         * @example
         *
         *     var hasher = CryptoJS.algo.SHA256.create();
         */
        init: function (cfg) {
            // Apply config defaults
            this.cfg = this.cfg.extend(cfg);

            // Set initial values
            this.reset();
        },

        /**
         * Resets this hasher to its initial state.
         *
         * @example
         *
         *     hasher.reset();
         */
        reset: function () {
            // Reset data buffer
            BufferedBlockAlgorithm.reset.call(this);

            // Perform concrete-hasher logic
            this._doReset();
        },

        /**
         * Updates this hasher with a message.
         *
         * @param {WordArray|string} messageUpdate The message to append.
         *
         * @return {Hasher} This hasher.
         *
         * @example
         *
         *     hasher.update('message');
         *     hasher.update(wordArray);
         */
        update: function (messageUpdate) {
            // Append
            this._append(messageUpdate);

            // Update the hash
            this._process();

            // Chainable
            return this;
        },

        /**
         * Finalizes the hash computation.
         * Note that the finalize operation is effectively a destructive, read-once operation.
         *
         * @param {WordArray|string} messageUpdate (Optional) A final message update.
         *
         * @return {WordArray} The hash.
         *
         * @example
         *
         *     var hash = hasher.finalize();
         *     var hash = hasher.finalize('message');
         *     var hash = hasher.finalize(wordArray);
         */
        finalize: function (messageUpdate) {
            // Final message update
            if (messageUpdate) {
                this._append(messageUpdate);
            }

            // Perform concrete-hasher logic
            var hash = this._doFinalize();

            return hash;
        },

        blockSize: 512/32,

        /**
         * Creates a shortcut function to a hasher's object interface.
         *
         * @param {Hasher} hasher The hasher to create a helper for.
         *
         * @return {Function} The shortcut function.
         *
         * @static
         *
         * @example
         *
         *     var SHA256 = CryptoJS.lib.Hasher._createHelper(CryptoJS.algo.SHA256);
         */
        _createHelper: function (hasher) {
            return function (message, cfg) {
                return new hasher.init(cfg).finalize(message);
            };
        },

        /**
         * Creates a shortcut function to the HMAC's object interface.
         *
         * @param {Hasher} hasher The hasher to use in this HMAC helper.
         *
         * @return {Function} The shortcut function.
         *
         * @static
         *
         * @example
         *
         *     var HmacSHA256 = CryptoJS.lib.Hasher._createHmacHelper(CryptoJS.algo.SHA256);
         */
        _createHmacHelper: function (hasher) {
            return function (message, key) {
                return new C_algo.HMAC.init(hasher, key).finalize(message);
            };
        }
    });

    /**
     * Algorithm namespace.
     */
    var C_algo = C.algo = {};

    return C;
}(Math));

define("crypto.core", function(){});

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
(function () {
    // Shortcuts
    var C = CryptoJS;
    var C_lib = C.lib;
    var WordArray = C_lib.WordArray;
    var C_enc = C.enc;

    /**
     * Base64 encoding strategy.
     */
    var Base64 = C_enc.Base64 = {
        /**
         * Converts a word array to a Base64 string.
         *
         * @param {WordArray} wordArray The word array.
         *
         * @return {string} The Base64 string.
         *
         * @static
         *
         * @example
         *
         *     var base64String = CryptoJS.enc.Base64.stringify(wordArray);
         */
        stringify: function (wordArray) {
            // Shortcuts
            var words = wordArray.words;
            var sigBytes = wordArray.sigBytes;
            var map = this._map;

            // Clamp excess bits
            wordArray.clamp();

            // Convert
            var base64Chars = [];
            for (var i = 0; i < sigBytes; i += 3) {
                var byte1 = (words[i >>> 2]       >>> (24 - (i % 4) * 8))       & 0xff;
                var byte2 = (words[(i + 1) >>> 2] >>> (24 - ((i + 1) % 4) * 8)) & 0xff;
                var byte3 = (words[(i + 2) >>> 2] >>> (24 - ((i + 2) % 4) * 8)) & 0xff;

                var triplet = (byte1 << 16) | (byte2 << 8) | byte3;

                for (var j = 0; (j < 4) && (i + j * 0.75 < sigBytes); j++) {
                    base64Chars.push(map.charAt((triplet >>> (6 * (3 - j))) & 0x3f));
                }
            }

            // Add padding
            var paddingChar = map.charAt(64);
            if (paddingChar) {
                while (base64Chars.length % 4) {
                    base64Chars.push(paddingChar);
                }
            }

            return base64Chars.join('');
        },

        /**
         * Converts a Base64 string to a word array.
         *
         * @param {string} base64Str The Base64 string.
         *
         * @return {WordArray} The word array.
         *
         * @static
         *
         * @example
         *
         *     var wordArray = CryptoJS.enc.Base64.parse(base64String);
         */
        parse: function (base64Str) {
            // Shortcuts
            var base64StrLength = base64Str.length;
            var map = this._map;

            // Ignore padding
            var paddingChar = map.charAt(64);
            if (paddingChar) {
                var paddingIndex = base64Str.indexOf(paddingChar);
                if (paddingIndex != -1) {
                    base64StrLength = paddingIndex;
                }
            }

            // Convert
            var words = [];
            var nBytes = 0;
            for (var i = 0; i < base64StrLength; i++) {
                if (i % 4) {
                    var bits1 = map.indexOf(base64Str.charAt(i - 1)) << ((i % 4) * 2);
                    var bits2 = map.indexOf(base64Str.charAt(i)) >>> (6 - (i % 4) * 2);
                    words[nBytes >>> 2] |= (bits1 | bits2) << (24 - (nBytes % 4) * 8);
                    nBytes++;
                }
            }

            return WordArray.create(words, nBytes);
        },

        _map: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='
    };
}());

define("crypto.enc-base64", ["crypto.core"], function(){});

(function (Math) {
    // Shortcuts
    var C = CryptoJS;
    var C_lib = C.lib;
    var WordArray = C_lib.WordArray;
    var Hasher = C_lib.Hasher;
    var C_algo = C.algo;

    // Constants table
    var T = [];

    // Compute constants
    (function () {
        for (var i = 0; i < 64; i++) {
            T[i] = (Math.abs(Math.sin(i + 1)) * 0x100000000) | 0;
        }
    }());

    /**
     * MD5 hash algorithm.
     */
    var MD5 = C_algo.MD5 = Hasher.extend({
        _doReset: function () {
            this._hash = new WordArray.init([
                0x67452301, 0xefcdab89,
                0x98badcfe, 0x10325476
            ]);
        },

        _doProcessBlock: function (M, offset) {
            // Swap endian
            for (var i = 0; i < 16; i++) {
                // Shortcuts
                var offset_i = offset + i;
                var M_offset_i = M[offset_i];

                M[offset_i] = (
                    (((M_offset_i << 8)  | (M_offset_i >>> 24)) & 0x00ff00ff) |
                    (((M_offset_i << 24) | (M_offset_i >>> 8))  & 0xff00ff00)
                );
            }

            // Shortcuts
            var H = this._hash.words;

            var M_offset_0  = M[offset + 0];
            var M_offset_1  = M[offset + 1];
            var M_offset_2  = M[offset + 2];
            var M_offset_3  = M[offset + 3];
            var M_offset_4  = M[offset + 4];
            var M_offset_5  = M[offset + 5];
            var M_offset_6  = M[offset + 6];
            var M_offset_7  = M[offset + 7];
            var M_offset_8  = M[offset + 8];
            var M_offset_9  = M[offset + 9];
            var M_offset_10 = M[offset + 10];
            var M_offset_11 = M[offset + 11];
            var M_offset_12 = M[offset + 12];
            var M_offset_13 = M[offset + 13];
            var M_offset_14 = M[offset + 14];
            var M_offset_15 = M[offset + 15];

            // Working varialbes
            var a = H[0];
            var b = H[1];
            var c = H[2];
            var d = H[3];

            // Computation
            a = FF(a, b, c, d, M_offset_0,  7,  T[0]);
            d = FF(d, a, b, c, M_offset_1,  12, T[1]);
            c = FF(c, d, a, b, M_offset_2,  17, T[2]);
            b = FF(b, c, d, a, M_offset_3,  22, T[3]);
            a = FF(a, b, c, d, M_offset_4,  7,  T[4]);
            d = FF(d, a, b, c, M_offset_5,  12, T[5]);
            c = FF(c, d, a, b, M_offset_6,  17, T[6]);
            b = FF(b, c, d, a, M_offset_7,  22, T[7]);
            a = FF(a, b, c, d, M_offset_8,  7,  T[8]);
            d = FF(d, a, b, c, M_offset_9,  12, T[9]);
            c = FF(c, d, a, b, M_offset_10, 17, T[10]);
            b = FF(b, c, d, a, M_offset_11, 22, T[11]);
            a = FF(a, b, c, d, M_offset_12, 7,  T[12]);
            d = FF(d, a, b, c, M_offset_13, 12, T[13]);
            c = FF(c, d, a, b, M_offset_14, 17, T[14]);
            b = FF(b, c, d, a, M_offset_15, 22, T[15]);

            a = GG(a, b, c, d, M_offset_1,  5,  T[16]);
            d = GG(d, a, b, c, M_offset_6,  9,  T[17]);
            c = GG(c, d, a, b, M_offset_11, 14, T[18]);
            b = GG(b, c, d, a, M_offset_0,  20, T[19]);
            a = GG(a, b, c, d, M_offset_5,  5,  T[20]);
            d = GG(d, a, b, c, M_offset_10, 9,  T[21]);
            c = GG(c, d, a, b, M_offset_15, 14, T[22]);
            b = GG(b, c, d, a, M_offset_4,  20, T[23]);
            a = GG(a, b, c, d, M_offset_9,  5,  T[24]);
            d = GG(d, a, b, c, M_offset_14, 9,  T[25]);
            c = GG(c, d, a, b, M_offset_3,  14, T[26]);
            b = GG(b, c, d, a, M_offset_8,  20, T[27]);
            a = GG(a, b, c, d, M_offset_13, 5,  T[28]);
            d = GG(d, a, b, c, M_offset_2,  9,  T[29]);
            c = GG(c, d, a, b, M_offset_7,  14, T[30]);
            b = GG(b, c, d, a, M_offset_12, 20, T[31]);

            a = HH(a, b, c, d, M_offset_5,  4,  T[32]);
            d = HH(d, a, b, c, M_offset_8,  11, T[33]);
            c = HH(c, d, a, b, M_offset_11, 16, T[34]);
            b = HH(b, c, d, a, M_offset_14, 23, T[35]);
            a = HH(a, b, c, d, M_offset_1,  4,  T[36]);
            d = HH(d, a, b, c, M_offset_4,  11, T[37]);
            c = HH(c, d, a, b, M_offset_7,  16, T[38]);
            b = HH(b, c, d, a, M_offset_10, 23, T[39]);
            a = HH(a, b, c, d, M_offset_13, 4,  T[40]);
            d = HH(d, a, b, c, M_offset_0,  11, T[41]);
            c = HH(c, d, a, b, M_offset_3,  16, T[42]);
            b = HH(b, c, d, a, M_offset_6,  23, T[43]);
            a = HH(a, b, c, d, M_offset_9,  4,  T[44]);
            d = HH(d, a, b, c, M_offset_12, 11, T[45]);
            c = HH(c, d, a, b, M_offset_15, 16, T[46]);
            b = HH(b, c, d, a, M_offset_2,  23, T[47]);

            a = II(a, b, c, d, M_offset_0,  6,  T[48]);
            d = II(d, a, b, c, M_offset_7,  10, T[49]);
            c = II(c, d, a, b, M_offset_14, 15, T[50]);
            b = II(b, c, d, a, M_offset_5,  21, T[51]);
            a = II(a, b, c, d, M_offset_12, 6,  T[52]);
            d = II(d, a, b, c, M_offset_3,  10, T[53]);
            c = II(c, d, a, b, M_offset_10, 15, T[54]);
            b = II(b, c, d, a, M_offset_1,  21, T[55]);
            a = II(a, b, c, d, M_offset_8,  6,  T[56]);
            d = II(d, a, b, c, M_offset_15, 10, T[57]);
            c = II(c, d, a, b, M_offset_6,  15, T[58]);
            b = II(b, c, d, a, M_offset_13, 21, T[59]);
            a = II(a, b, c, d, M_offset_4,  6,  T[60]);
            d = II(d, a, b, c, M_offset_11, 10, T[61]);
            c = II(c, d, a, b, M_offset_2,  15, T[62]);
            b = II(b, c, d, a, M_offset_9,  21, T[63]);

            // Intermediate hash value
            H[0] = (H[0] + a) | 0;
            H[1] = (H[1] + b) | 0;
            H[2] = (H[2] + c) | 0;
            H[3] = (H[3] + d) | 0;
        },

        _doFinalize: function () {
            // Shortcuts
            var data = this._data;
            var dataWords = data.words;

            var nBitsTotal = this._nDataBytes * 8;
            var nBitsLeft = data.sigBytes * 8;

            // Add padding
            dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);

            var nBitsTotalH = Math.floor(nBitsTotal / 0x100000000);
            var nBitsTotalL = nBitsTotal;
            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 15] = (
                (((nBitsTotalH << 8)  | (nBitsTotalH >>> 24)) & 0x00ff00ff) |
                (((nBitsTotalH << 24) | (nBitsTotalH >>> 8))  & 0xff00ff00)
            );
            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
                (((nBitsTotalL << 8)  | (nBitsTotalL >>> 24)) & 0x00ff00ff) |
                (((nBitsTotalL << 24) | (nBitsTotalL >>> 8))  & 0xff00ff00)
            );

            data.sigBytes = (dataWords.length + 1) * 4;

            // Hash final blocks
            this._process();

            // Shortcuts
            var hash = this._hash;
            var H = hash.words;

            // Swap endian
            for (var i = 0; i < 4; i++) {
                // Shortcut
                var H_i = H[i];

                H[i] = (((H_i << 8)  | (H_i >>> 24)) & 0x00ff00ff) |
                       (((H_i << 24) | (H_i >>> 8))  & 0xff00ff00);
            }

            // Return final computed hash
            return hash;
        },

        clone: function () {
            var clone = Hasher.clone.call(this);
            clone._hash = this._hash.clone();

            return clone;
        }
    });

    function FF(a, b, c, d, x, s, t) {
        var n = a + ((b & c) | (~b & d)) + x + t;
        return ((n << s) | (n >>> (32 - s))) + b;
    }

    function GG(a, b, c, d, x, s, t) {
        var n = a + ((b & d) | (c & ~d)) + x + t;
        return ((n << s) | (n >>> (32 - s))) + b;
    }

    function HH(a, b, c, d, x, s, t) {
        var n = a + (b ^ c ^ d) + x + t;
        return ((n << s) | (n >>> (32 - s))) + b;
    }

    function II(a, b, c, d, x, s, t) {
        var n = a + (c ^ (b | ~d)) + x + t;
        return ((n << s) | (n >>> (32 - s))) + b;
    }

    /**
     * Shortcut function to the hasher's object interface.
     *
     * @param {WordArray|string} message The message to hash.
     *
     * @return {WordArray} The hash.
     *
     * @static
     *
     * @example
     *
     *     var hash = CryptoJS.MD5('message');
     *     var hash = CryptoJS.MD5(wordArray);
     */
    C.MD5 = Hasher._createHelper(MD5);

    /**
     * Shortcut function to the HMAC's object interface.
     *
     * @param {WordArray|string} message The message to hash.
     * @param {WordArray|string} key The secret key.
     *
     * @return {WordArray} The HMAC.
     *
     * @static
     *
     * @example
     *
     *     var hmac = CryptoJS.HmacMD5(message, key);
     */
    C.HmacMD5 = Hasher._createHmacHelper(MD5);
}(Math));

define("crypto.md5", ["crypto.core"], function(){});

(function () {
    // Shortcuts
    var C = CryptoJS;
    var C_lib = C.lib;
    var Base = C_lib.Base;
    var WordArray = C_lib.WordArray;
    var C_algo = C.algo;
    var MD5 = C_algo.MD5;

    /**
     * This key derivation function is meant to conform with EVP_BytesToKey.
     * www.openssl.org/docs/crypto/EVP_BytesToKey.html
     */
    var EvpKDF = C_algo.EvpKDF = Base.extend({
        /**
         * Configuration options.
         *
         * @property {number} keySize The key size in words to generate. Default: 4 (128 bits)
         * @property {Hasher} hasher The hash algorithm to use. Default: MD5
         * @property {number} iterations The number of iterations to perform. Default: 1
         */
        cfg: Base.extend({
            keySize: 128/32,
            hasher: MD5,
            iterations: 1
        }),

        /**
         * Initializes a newly created key derivation function.
         *
         * @param {Object} cfg (Optional) The configuration options to use for the derivation.
         *
         * @example
         *
         *     var kdf = CryptoJS.algo.EvpKDF.create();
         *     var kdf = CryptoJS.algo.EvpKDF.create({ keySize: 8 });
         *     var kdf = CryptoJS.algo.EvpKDF.create({ keySize: 8, iterations: 1000 });
         */
        init: function (cfg) {
            this.cfg = this.cfg.extend(cfg);
        },

        /**
         * Derives a key from a password.
         *
         * @param {WordArray|string} password The password.
         * @param {WordArray|string} salt A salt.
         *
         * @return {WordArray} The derived key.
         *
         * @example
         *
         *     var key = kdf.compute(password, salt);
         */
        compute: function (password, salt) {
            // Shortcut
            var cfg = this.cfg;

            // Init hasher
            var hasher = cfg.hasher.create();

            // Initial values
            var derivedKey = WordArray.create();

            // Shortcuts
            var derivedKeyWords = derivedKey.words;
            var keySize = cfg.keySize;
            var iterations = cfg.iterations;

            // Generate key
            while (derivedKeyWords.length < keySize) {
                if (block) {
                    hasher.update(block);
                }
                var block = hasher.update(password).finalize(salt);
                hasher.reset();

                // Iterations
                for (var i = 1; i < iterations; i++) {
                    block = hasher.finalize(block);
                    hasher.reset();
                }

                derivedKey.concat(block);
            }
            derivedKey.sigBytes = keySize * 4;

            return derivedKey;
        }
    });

    /**
     * Derives a key from a password.
     *
     * @param {WordArray|string} password The password.
     * @param {WordArray|string} salt A salt.
     * @param {Object} cfg (Optional) The configuration options to use for this computation.
     *
     * @return {WordArray} The derived key.
     *
     * @static
     *
     * @example
     *
     *     var key = CryptoJS.EvpKDF(password, salt);
     *     var key = CryptoJS.EvpKDF(password, salt, { keySize: 8 });
     *     var key = CryptoJS.EvpKDF(password, salt, { keySize: 8, iterations: 1000 });
     */
    C.EvpKDF = function (password, salt, cfg) {
        return EvpKDF.create(cfg).compute(password, salt);
    };
}());

define("crypto.evpkdf", ["crypto.md5"], function(){});

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
/**
 * Cipher core components.
 */
CryptoJS.lib.Cipher || (function (undefined) {
    // Shortcuts
    var C = CryptoJS;
    var C_lib = C.lib;
    var Base = C_lib.Base;
    var WordArray = C_lib.WordArray;
    var BufferedBlockAlgorithm = C_lib.BufferedBlockAlgorithm;
    var C_enc = C.enc;
    var Utf8 = C_enc.Utf8;
    var Base64 = C_enc.Base64;
    var C_algo = C.algo;
    var EvpKDF = C_algo.EvpKDF;

    /**
     * Abstract base cipher template.
     *
     * @property {number} keySize This cipher's key size. Default: 4 (128 bits)
     * @property {number} ivSize This cipher's IV size. Default: 4 (128 bits)
     * @property {number} _ENC_XFORM_MODE A constant representing encryption mode.
     * @property {number} _DEC_XFORM_MODE A constant representing decryption mode.
     */
    var Cipher = C_lib.Cipher = BufferedBlockAlgorithm.extend({
        /**
         * Configuration options.
         *
         * @property {WordArray} iv The IV to use for this operation.
         */
        cfg: Base.extend(),

        /**
         * Creates this cipher in encryption mode.
         *
         * @param {WordArray} key The key.
         * @param {Object} cfg (Optional) The configuration options to use for this operation.
         *
         * @return {Cipher} A cipher instance.
         *
         * @static
         *
         * @example
         *
         *     var cipher = CryptoJS.algo.AES.createEncryptor(keyWordArray, { iv: ivWordArray });
         */
        createEncryptor: function (key, cfg) {
            return this.create(this._ENC_XFORM_MODE, key, cfg);
        },

        /**
         * Creates this cipher in decryption mode.
         *
         * @param {WordArray} key The key.
         * @param {Object} cfg (Optional) The configuration options to use for this operation.
         *
         * @return {Cipher} A cipher instance.
         *
         * @static
         *
         * @example
         *
         *     var cipher = CryptoJS.algo.AES.createDecryptor(keyWordArray, { iv: ivWordArray });
         */
        createDecryptor: function (key, cfg) {
            return this.create(this._DEC_XFORM_MODE, key, cfg);
        },

        /**
         * Initializes a newly created cipher.
         *
         * @param {number} xformMode Either the encryption or decryption transormation mode constant.
         * @param {WordArray} key The key.
         * @param {Object} cfg (Optional) The configuration options to use for this operation.
         *
         * @example
         *
         *     var cipher = CryptoJS.algo.AES.create(CryptoJS.algo.AES._ENC_XFORM_MODE, keyWordArray, { iv: ivWordArray });
         */
        init: function (xformMode, key, cfg) {
            // Apply config defaults
            this.cfg = this.cfg.extend(cfg);

            // Store transform mode and key
            this._xformMode = xformMode;
            this._key = key;

            // Set initial values
            this.reset();
        },

        /**
         * Resets this cipher to its initial state.
         *
         * @example
         *
         *     cipher.reset();
         */
        reset: function () {
            // Reset data buffer
            BufferedBlockAlgorithm.reset.call(this);

            // Perform concrete-cipher logic
            this._doReset();
        },

        /**
         * Adds data to be encrypted or decrypted.
         *
         * @param {WordArray|string} dataUpdate The data to encrypt or decrypt.
         *
         * @return {WordArray} The data after processing.
         *
         * @example
         *
         *     var encrypted = cipher.process('data');
         *     var encrypted = cipher.process(wordArray);
         */
        process: function (dataUpdate) {
            // Append
            this._append(dataUpdate);

            // Process available blocks
            return this._process();
        },

        /**
         * Finalizes the encryption or decryption process.
         * Note that the finalize operation is effectively a destructive, read-once operation.
         *
         * @param {WordArray|string} dataUpdate The final data to encrypt or decrypt.
         *
         * @return {WordArray} The data after final processing.
         *
         * @example
         *
         *     var encrypted = cipher.finalize();
         *     var encrypted = cipher.finalize('data');
         *     var encrypted = cipher.finalize(wordArray);
         */
        finalize: function (dataUpdate) {
            // Final data update
            if (dataUpdate) {
                this._append(dataUpdate);
            }

            // Perform concrete-cipher logic
            var finalProcessedData = this._doFinalize();

            return finalProcessedData;
        },

        keySize: 128/32,

        ivSize: 128/32,

        _ENC_XFORM_MODE: 1,

        _DEC_XFORM_MODE: 2,

        /**
         * Creates shortcut functions to a cipher's object interface.
         *
         * @param {Cipher} cipher The cipher to create a helper for.
         *
         * @return {Object} An object with encrypt and decrypt shortcut functions.
         *
         * @static
         *
         * @example
         *
         *     var AES = CryptoJS.lib.Cipher._createHelper(CryptoJS.algo.AES);
         */
        _createHelper: (function () {
            function selectCipherStrategy(key) {
                if (typeof key == 'string') {
                    return PasswordBasedCipher;
                } else {
                    return SerializableCipher;
                }
            }

            return function (cipher) {
                return {
                    encrypt: function (message, key, cfg) {
                        return selectCipherStrategy(key).encrypt(cipher, message, key, cfg);
                    },

                    decrypt: function (ciphertext, key, cfg) {
                        return selectCipherStrategy(key).decrypt(cipher, ciphertext, key, cfg);
                    }
                };
            };
        }())
    });

    /**
     * Abstract base stream cipher template.
     *
     * @property {number} blockSize The number of 32-bit words this cipher operates on. Default: 1 (32 bits)
     */
    var StreamCipher = C_lib.StreamCipher = Cipher.extend({
        _doFinalize: function () {
            // Process partial blocks
            var finalProcessedBlocks = this._process(!!'flush');

            return finalProcessedBlocks;
        },

        blockSize: 1
    });

    /**
     * Mode namespace.
     */
    var C_mode = C.mode = {};

    /**
     * Abstract base block cipher mode template.
     */
    var BlockCipherMode = C_lib.BlockCipherMode = Base.extend({
        /**
         * Creates this mode for encryption.
         *
         * @param {Cipher} cipher A block cipher instance.
         * @param {Array} iv The IV words.
         *
         * @static
         *
         * @example
         *
         *     var mode = CryptoJS.mode.CBC.createEncryptor(cipher, iv.words);
         */
        createEncryptor: function (cipher, iv) {
            return this.Encryptor.create(cipher, iv);
        },

        /**
         * Creates this mode for decryption.
         *
         * @param {Cipher} cipher A block cipher instance.
         * @param {Array} iv The IV words.
         *
         * @static
         *
         * @example
         *
         *     var mode = CryptoJS.mode.CBC.createDecryptor(cipher, iv.words);
         */
        createDecryptor: function (cipher, iv) {
            return this.Decryptor.create(cipher, iv);
        },

        /**
         * Initializes a newly created mode.
         *
         * @param {Cipher} cipher A block cipher instance.
         * @param {Array} iv The IV words.
         *
         * @example
         *
         *     var mode = CryptoJS.mode.CBC.Encryptor.create(cipher, iv.words);
         */
        init: function (cipher, iv) {
            this._cipher = cipher;
            this._iv = iv;
        }
    });

    /**
     * Cipher Block Chaining mode.
     */
    var CBC = C_mode.CBC = (function () {
        /**
         * Abstract base CBC mode.
         */
        var CBC = BlockCipherMode.extend();

        /**
         * CBC encryptor.
         */
        CBC.Encryptor = CBC.extend({
            /**
             * Processes the data block at offset.
             *
             * @param {Array} words The data words to operate on.
             * @param {number} offset The offset where the block starts.
             *
             * @example
             *
             *     mode.processBlock(data.words, offset);
             */
            processBlock: function (words, offset) {
                // Shortcuts
                var cipher = this._cipher;
                var blockSize = cipher.blockSize;

                // XOR and encrypt
                xorBlock.call(this, words, offset, blockSize);
                cipher.encryptBlock(words, offset);

                // Remember this block to use with next block
                this._prevBlock = words.slice(offset, offset + blockSize);
            }
        });

        /**
         * CBC decryptor.
         */
        CBC.Decryptor = CBC.extend({
            /**
             * Processes the data block at offset.
             *
             * @param {Array} words The data words to operate on.
             * @param {number} offset The offset where the block starts.
             *
             * @example
             *
             *     mode.processBlock(data.words, offset);
             */
            processBlock: function (words, offset) {
                // Shortcuts
                var cipher = this._cipher;
                var blockSize = cipher.blockSize;

                // Remember this block to use with next block
                var thisBlock = words.slice(offset, offset + blockSize);

                // Decrypt and XOR
                cipher.decryptBlock(words, offset);
                xorBlock.call(this, words, offset, blockSize);

                // This block becomes the previous block
                this._prevBlock = thisBlock;
            }
        });

        function xorBlock(words, offset, blockSize) {
            // Shortcut
            var iv = this._iv;

            // Choose mixing block
            if (iv) {
                var block = iv;

                // Remove IV for subsequent blocks
                this._iv = undefined;
            } else {
                var block = this._prevBlock;
            }

            // XOR blocks
            for (var i = 0; i < blockSize; i++) {
                words[offset + i] ^= block[i];
            }
        }

        return CBC;
    }());

    /**
     * Padding namespace.
     */
    var C_pad = C.pad = {};

    /**
     * PKCS #5/7 padding strategy.
     */
    var Pkcs7 = C_pad.Pkcs7 = {
        /**
         * Pads data using the algorithm defined in PKCS #5/7.
         *
         * @param {WordArray} data The data to pad.
         * @param {number} blockSize The multiple that the data should be padded to.
         *
         * @static
         *
         * @example
         *
         *     CryptoJS.pad.Pkcs7.pad(wordArray, 4);
         */
        pad: function (data, blockSize) {
            // Shortcut
            var blockSizeBytes = blockSize * 4;

            // Count padding bytes
            var nPaddingBytes = blockSizeBytes - data.sigBytes % blockSizeBytes;

            // Create padding word
            var paddingWord = (nPaddingBytes << 24) | (nPaddingBytes << 16) | (nPaddingBytes << 8) | nPaddingBytes;

            // Create padding
            var paddingWords = [];
            for (var i = 0; i < nPaddingBytes; i += 4) {
                paddingWords.push(paddingWord);
            }
            var padding = WordArray.create(paddingWords, nPaddingBytes);

            // Add padding
            data.concat(padding);
        },

        /**
         * Unpads data that had been padded using the algorithm defined in PKCS #5/7.
         *
         * @param {WordArray} data The data to unpad.
         *
         * @static
         *
         * @example
         *
         *     CryptoJS.pad.Pkcs7.unpad(wordArray);
         */
        unpad: function (data) {
            // Get number of padding bytes from last byte
            var nPaddingBytes = data.words[(data.sigBytes - 1) >>> 2] & 0xff;

            // Remove padding
            data.sigBytes -= nPaddingBytes;
        }
    };

    /**
     * Abstract base block cipher template.
     *
     * @property {number} blockSize The number of 32-bit words this cipher operates on. Default: 4 (128 bits)
     */
    var BlockCipher = C_lib.BlockCipher = Cipher.extend({
        /**
         * Configuration options.
         *
         * @property {Mode} mode The block mode to use. Default: CBC
         * @property {Padding} padding The padding strategy to use. Default: Pkcs7
         */
        cfg: Cipher.cfg.extend({
            mode: CBC,
            padding: Pkcs7
        }),

        reset: function () {
            // Reset cipher
            Cipher.reset.call(this);

            // Shortcuts
            var cfg = this.cfg;
            var iv = cfg.iv;
            var mode = cfg.mode;

            // Reset block mode
            if (this._xformMode == this._ENC_XFORM_MODE) {
                var modeCreator = mode.createEncryptor;
            } else /* if (this._xformMode == this._DEC_XFORM_MODE) */ {
                var modeCreator = mode.createDecryptor;

                // Keep at least one block in the buffer for unpadding
                this._minBufferSize = 1;
            }
            this._mode = modeCreator.call(mode, this, iv && iv.words);
        },

        _doProcessBlock: function (words, offset) {
            this._mode.processBlock(words, offset);
        },

        _doFinalize: function () {
            // Shortcut
            var padding = this.cfg.padding;

            // Finalize
            if (this._xformMode == this._ENC_XFORM_MODE) {
                // Pad data
                padding.pad(this._data, this.blockSize);

                // Process final blocks
                var finalProcessedBlocks = this._process(!!'flush');
            } else /* if (this._xformMode == this._DEC_XFORM_MODE) */ {
                // Process final blocks
                var finalProcessedBlocks = this._process(!!'flush');

                // Unpad data
                padding.unpad(finalProcessedBlocks);
            }

            return finalProcessedBlocks;
        },

        blockSize: 128/32
    });

    /**
     * A collection of cipher parameters.
     *
     * @property {WordArray} ciphertext The raw ciphertext.
     * @property {WordArray} key The key to this ciphertext.
     * @property {WordArray} iv The IV used in the ciphering operation.
     * @property {WordArray} salt The salt used with a key derivation function.
     * @property {Cipher} algorithm The cipher algorithm.
     * @property {Mode} mode The block mode used in the ciphering operation.
     * @property {Padding} padding The padding scheme used in the ciphering operation.
     * @property {number} blockSize The block size of the cipher.
     * @property {Format} formatter The default formatting strategy to convert this cipher params object to a string.
     */
    var CipherParams = C_lib.CipherParams = Base.extend({
        /**
         * Initializes a newly created cipher params object.
         *
         * @param {Object} cipherParams An object with any of the possible cipher parameters.
         *
         * @example
         *
         *     var cipherParams = CryptoJS.lib.CipherParams.create({
         *         ciphertext: ciphertextWordArray,
         *         key: keyWordArray,
         *         iv: ivWordArray,
         *         salt: saltWordArray,
         *         algorithm: CryptoJS.algo.AES,
         *         mode: CryptoJS.mode.CBC,
         *         padding: CryptoJS.pad.PKCS7,
         *         blockSize: 4,
         *         formatter: CryptoJS.format.OpenSSL
         *     });
         */
        init: function (cipherParams) {
            this.mixIn(cipherParams);
        },

        /**
         * Converts this cipher params object to a string.
         *
         * @param {Format} formatter (Optional) The formatting strategy to use.
         *
         * @return {string} The stringified cipher params.
         *
         * @throws Error If neither the formatter nor the default formatter is set.
         *
         * @example
         *
         *     var string = cipherParams + '';
         *     var string = cipherParams.toString();
         *     var string = cipherParams.toString(CryptoJS.format.OpenSSL);
         */
        toString: function (formatter) {
            return (formatter || this.formatter).stringify(this);
        }
    });

    /**
     * Format namespace.
     */
    var C_format = C.format = {};

    /**
     * OpenSSL formatting strategy.
     */
    var OpenSSLFormatter = C_format.OpenSSL = {
        /**
         * Converts a cipher params object to an OpenSSL-compatible string.
         *
         * @param {CipherParams} cipherParams The cipher params object.
         *
         * @return {string} The OpenSSL-compatible string.
         *
         * @static
         *
         * @example
         *
         *     var openSSLString = CryptoJS.format.OpenSSL.stringify(cipherParams);
         */
        stringify: function (cipherParams) {
            // Shortcuts
            var ciphertext = cipherParams.ciphertext;
            var salt = cipherParams.salt;

            // Format
            if (salt) {
                var wordArray = WordArray.create([0x53616c74, 0x65645f5f]).concat(salt).concat(ciphertext);
            } else {
                var wordArray = ciphertext;
            }

            return wordArray.toString(Base64);
        },

        /**
         * Converts an OpenSSL-compatible string to a cipher params object.
         *
         * @param {string} openSSLStr The OpenSSL-compatible string.
         *
         * @return {CipherParams} The cipher params object.
         *
         * @static
         *
         * @example
         *
         *     var cipherParams = CryptoJS.format.OpenSSL.parse(openSSLString);
         */
        parse: function (openSSLStr) {
            // Parse base64
            var ciphertext = Base64.parse(openSSLStr);

            // Shortcut
            var ciphertextWords = ciphertext.words;

            // Test for salt
            if (ciphertextWords[0] == 0x53616c74 && ciphertextWords[1] == 0x65645f5f) {
                // Extract salt
                var salt = WordArray.create(ciphertextWords.slice(2, 4));

                // Remove salt from ciphertext
                ciphertextWords.splice(0, 4);
                ciphertext.sigBytes -= 16;
            }

            return CipherParams.create({ ciphertext: ciphertext, salt: salt });
        }
    };

    /**
     * A cipher wrapper that returns ciphertext as a serializable cipher params object.
     */
    var SerializableCipher = C_lib.SerializableCipher = Base.extend({
        /**
         * Configuration options.
         *
         * @property {Formatter} format The formatting strategy to convert cipher param objects to and from a string. Default: OpenSSL
         */
        cfg: Base.extend({
            format: OpenSSLFormatter
        }),

        /**
         * Encrypts a message.
         *
         * @param {Cipher} cipher The cipher algorithm to use.
         * @param {WordArray|string} message The message to encrypt.
         * @param {WordArray} key The key.
         * @param {Object} cfg (Optional) The configuration options to use for this operation.
         *
         * @return {CipherParams} A cipher params object.
         *
         * @static
         *
         * @example
         *
         *     var ciphertextParams = CryptoJS.lib.SerializableCipher.encrypt(CryptoJS.algo.AES, message, key);
         *     var ciphertextParams = CryptoJS.lib.SerializableCipher.encrypt(CryptoJS.algo.AES, message, key, { iv: iv });
         *     var ciphertextParams = CryptoJS.lib.SerializableCipher.encrypt(CryptoJS.algo.AES, message, key, { iv: iv, format: CryptoJS.format.OpenSSL });
         */
        encrypt: function (cipher, message, key, cfg) {
            // Apply config defaults
            cfg = this.cfg.extend(cfg);

            // Encrypt
            var encryptor = cipher.createEncryptor(key, cfg);
            var ciphertext = encryptor.finalize(message);

            // Shortcut
            var cipherCfg = encryptor.cfg;

            // Create and return serializable cipher params
            return CipherParams.create({
                ciphertext: ciphertext,
                key: key,
                iv: cipherCfg.iv,
                algorithm: cipher,
                mode: cipherCfg.mode,
                padding: cipherCfg.padding,
                blockSize: cipher.blockSize,
                formatter: cfg.format
            });
        },

        /**
         * Decrypts serialized ciphertext.
         *
         * @param {Cipher} cipher The cipher algorithm to use.
         * @param {CipherParams|string} ciphertext The ciphertext to decrypt.
         * @param {WordArray} key The key.
         * @param {Object} cfg (Optional) The configuration options to use for this operation.
         *
         * @return {WordArray} The plaintext.
         *
         * @static
         *
         * @example
         *
         *     var plaintext = CryptoJS.lib.SerializableCipher.decrypt(CryptoJS.algo.AES, formattedCiphertext, key, { iv: iv, format: CryptoJS.format.OpenSSL });
         *     var plaintext = CryptoJS.lib.SerializableCipher.decrypt(CryptoJS.algo.AES, ciphertextParams, key, { iv: iv, format: CryptoJS.format.OpenSSL });
         */
        decrypt: function (cipher, ciphertext, key, cfg) {
            // Apply config defaults
            cfg = this.cfg.extend(cfg);

            // Convert string to CipherParams
            ciphertext = this._parse(ciphertext, cfg.format);

            // Decrypt
            var plaintext = cipher.createDecryptor(key, cfg).finalize(ciphertext.ciphertext);

            return plaintext;
        },

        /**
         * Converts serialized ciphertext to CipherParams,
         * else assumed CipherParams already and returns ciphertext unchanged.
         *
         * @param {CipherParams|string} ciphertext The ciphertext.
         * @param {Formatter} format The formatting strategy to use to parse serialized ciphertext.
         *
         * @return {CipherParams} The unserialized ciphertext.
         *
         * @static
         *
         * @example
         *
         *     var ciphertextParams = CryptoJS.lib.SerializableCipher._parse(ciphertextStringOrParams, format);
         */
        _parse: function (ciphertext, format) {
            if (typeof ciphertext == 'string') {
                return format.parse(ciphertext, this);
            } else {
                return ciphertext;
            }
        }
    });

    /**
     * Key derivation function namespace.
     */
    var C_kdf = C.kdf = {};

    /**
     * OpenSSL key derivation function.
     */
    var OpenSSLKdf = C_kdf.OpenSSL = {
        /**
         * Derives a key and IV from a password.
         *
         * @param {string} password The password to derive from.
         * @param {number} keySize The size in words of the key to generate.
         * @param {number} ivSize The size in words of the IV to generate.
         * @param {WordArray|string} salt (Optional) A 64-bit salt to use. If omitted, a salt will be generated randomly.
         *
         * @return {CipherParams} A cipher params object with the key, IV, and salt.
         *
         * @static
         *
         * @example
         *
         *     var derivedParams = CryptoJS.kdf.OpenSSL.execute('Password', 256/32, 128/32);
         *     var derivedParams = CryptoJS.kdf.OpenSSL.execute('Password', 256/32, 128/32, 'saltsalt');
         */
        execute: function (password, keySize, ivSize, salt) {
            // Generate random salt
            if (!salt) {
                salt = WordArray.random(64/8);
            }

            // Derive key and IV
            var key = EvpKDF.create({ keySize: keySize + ivSize }).compute(password, salt);

            // Separate key and IV
            var iv = WordArray.create(key.words.slice(keySize), ivSize * 4);
            key.sigBytes = keySize * 4;

            // Return params
            return CipherParams.create({ key: key, iv: iv, salt: salt });
        }
    };

    /**
     * A serializable cipher wrapper that derives the key from a password,
     * and returns ciphertext as a serializable cipher params object.
     */
    var PasswordBasedCipher = C_lib.PasswordBasedCipher = SerializableCipher.extend({
        /**
         * Configuration options.
         *
         * @property {KDF} kdf The key derivation function to use to generate a key and IV from a password. Default: OpenSSL
         */
        cfg: SerializableCipher.cfg.extend({
            kdf: OpenSSLKdf
        }),

        /**
         * Encrypts a message using a password.
         *
         * @param {Cipher} cipher The cipher algorithm to use.
         * @param {WordArray|string} message The message to encrypt.
         * @param {string} password The password.
         * @param {Object} cfg (Optional) The configuration options to use for this operation.
         *
         * @return {CipherParams} A cipher params object.
         *
         * @static
         *
         * @example
         *
         *     var ciphertextParams = CryptoJS.lib.PasswordBasedCipher.encrypt(CryptoJS.algo.AES, message, 'password');
         *     var ciphertextParams = CryptoJS.lib.PasswordBasedCipher.encrypt(CryptoJS.algo.AES, message, 'password', { format: CryptoJS.format.OpenSSL });
         */
        encrypt: function (cipher, message, password, cfg) {
            // Apply config defaults
            cfg = this.cfg.extend(cfg);

            // Derive key and other params
            var derivedParams = cfg.kdf.execute(password, cipher.keySize, cipher.ivSize);

            // Add IV to config
            cfg.iv = derivedParams.iv;

            // Encrypt
            var ciphertext = SerializableCipher.encrypt.call(this, cipher, message, derivedParams.key, cfg);

            // Mix in derived params
            ciphertext.mixIn(derivedParams);

            return ciphertext;
        },

        /**
         * Decrypts serialized ciphertext using a password.
         *
         * @param {Cipher} cipher The cipher algorithm to use.
         * @param {CipherParams|string} ciphertext The ciphertext to decrypt.
         * @param {string} password The password.
         * @param {Object} cfg (Optional) The configuration options to use for this operation.
         *
         * @return {WordArray} The plaintext.
         *
         * @static
         *
         * @example
         *
         *     var plaintext = CryptoJS.lib.PasswordBasedCipher.decrypt(CryptoJS.algo.AES, formattedCiphertext, 'password', { format: CryptoJS.format.OpenSSL });
         *     var plaintext = CryptoJS.lib.PasswordBasedCipher.decrypt(CryptoJS.algo.AES, ciphertextParams, 'password', { format: CryptoJS.format.OpenSSL });
         */
        decrypt: function (cipher, ciphertext, password, cfg) {
            // Apply config defaults
            cfg = this.cfg.extend(cfg);

            // Convert string to CipherParams
            ciphertext = this._parse(ciphertext, cfg.format);

            // Derive key and other params
            var derivedParams = cfg.kdf.execute(password, cipher.keySize, cipher.ivSize, ciphertext.salt);

            // Add IV to config
            cfg.iv = derivedParams.iv;

            // Decrypt
            var plaintext = SerializableCipher.decrypt.call(this, cipher, ciphertext, derivedParams.key, cfg);

            return plaintext;
        }
    });
}());

define("crypto.cipher-core", ["crypto.enc-base64","crypto.evpkdf"], function(){});

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
(function () {
    // Shortcuts
    var C = CryptoJS;
    var C_lib = C.lib;
    var BlockCipher = C_lib.BlockCipher;
    var C_algo = C.algo;

    // Lookup tables
    var SBOX = [];
    var INV_SBOX = [];
    var SUB_MIX_0 = [];
    var SUB_MIX_1 = [];
    var SUB_MIX_2 = [];
    var SUB_MIX_3 = [];
    var INV_SUB_MIX_0 = [];
    var INV_SUB_MIX_1 = [];
    var INV_SUB_MIX_2 = [];
    var INV_SUB_MIX_3 = [];

    // Compute lookup tables
    (function () {
        // Compute double table
        var d = [];
        for (var i = 0; i < 256; i++) {
            if (i < 128) {
                d[i] = i << 1;
            } else {
                d[i] = (i << 1) ^ 0x11b;
            }
        }

        // Walk GF(2^8)
        var x = 0;
        var xi = 0;
        for (var i = 0; i < 256; i++) {
            // Compute sbox
            var sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4);
            sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63;
            SBOX[x] = sx;
            INV_SBOX[sx] = x;

            // Compute multiplication
            var x2 = d[x];
            var x4 = d[x2];
            var x8 = d[x4];

            // Compute sub bytes, mix columns tables
            var t = (d[sx] * 0x101) ^ (sx * 0x1010100);
            SUB_MIX_0[x] = (t << 24) | (t >>> 8);
            SUB_MIX_1[x] = (t << 16) | (t >>> 16);
            SUB_MIX_2[x] = (t << 8)  | (t >>> 24);
            SUB_MIX_3[x] = t;

            // Compute inv sub bytes, inv mix columns tables
            var t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100);
            INV_SUB_MIX_0[sx] = (t << 24) | (t >>> 8);
            INV_SUB_MIX_1[sx] = (t << 16) | (t >>> 16);
            INV_SUB_MIX_2[sx] = (t << 8)  | (t >>> 24);
            INV_SUB_MIX_3[sx] = t;

            // Compute next counter
            if (!x) {
                x = xi = 1;
            } else {
                x = x2 ^ d[d[d[x8 ^ x2]]];
                xi ^= d[d[xi]];
            }
        }
    }());

    // Precomputed Rcon lookup
    var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36];

    /**
     * AES block cipher algorithm.
     */
    var AES = C_algo.AES = BlockCipher.extend({
        _doReset: function () {
            // Shortcuts
            var key = this._key;
            var keyWords = key.words;
            var keySize = key.sigBytes / 4;

            // Compute number of rounds
            var nRounds = this._nRounds = keySize + 6

            // Compute number of key schedule rows
            var ksRows = (nRounds + 1) * 4;

            // Compute key schedule
            var keySchedule = this._keySchedule = [];
            for (var ksRow = 0; ksRow < ksRows; ksRow++) {
                if (ksRow < keySize) {
                    keySchedule[ksRow] = keyWords[ksRow];
                } else {
                    var t = keySchedule[ksRow - 1];

                    if (!(ksRow % keySize)) {
                        // Rot word
                        t = (t << 8) | (t >>> 24);

                        // Sub word
                        t = (SBOX[t >>> 24] << 24) | (SBOX[(t >>> 16) & 0xff] << 16) | (SBOX[(t >>> 8) & 0xff] << 8) | SBOX[t & 0xff];

                        // Mix Rcon
                        t ^= RCON[(ksRow / keySize) | 0] << 24;
                    } else if (keySize > 6 && ksRow % keySize == 4) {
                        // Sub word
                        t = (SBOX[t >>> 24] << 24) | (SBOX[(t >>> 16) & 0xff] << 16) | (SBOX[(t >>> 8) & 0xff] << 8) | SBOX[t & 0xff];
                    }

                    keySchedule[ksRow] = keySchedule[ksRow - keySize] ^ t;
                }
            }

            // Compute inv key schedule
            var invKeySchedule = this._invKeySchedule = [];
            for (var invKsRow = 0; invKsRow < ksRows; invKsRow++) {
                var ksRow = ksRows - invKsRow;

                if (invKsRow % 4) {
                    var t = keySchedule[ksRow];
                } else {
                    var t = keySchedule[ksRow - 4];
                }

                if (invKsRow < 4 || ksRow <= 4) {
                    invKeySchedule[invKsRow] = t;
                } else {
                    invKeySchedule[invKsRow] = INV_SUB_MIX_0[SBOX[t >>> 24]] ^ INV_SUB_MIX_1[SBOX[(t >>> 16) & 0xff]] ^
                                               INV_SUB_MIX_2[SBOX[(t >>> 8) & 0xff]] ^ INV_SUB_MIX_3[SBOX[t & 0xff]];
                }
            }
        },

        encryptBlock: function (M, offset) {
            this._doCryptBlock(M, offset, this._keySchedule, SUB_MIX_0, SUB_MIX_1, SUB_MIX_2, SUB_MIX_3, SBOX);
        },

        decryptBlock: function (M, offset) {
            // Swap 2nd and 4th rows
            var t = M[offset + 1];
            M[offset + 1] = M[offset + 3];
            M[offset + 3] = t;

            this._doCryptBlock(M, offset, this._invKeySchedule, INV_SUB_MIX_0, INV_SUB_MIX_1, INV_SUB_MIX_2, INV_SUB_MIX_3, INV_SBOX);

            // Inv swap 2nd and 4th rows
            var t = M[offset + 1];
            M[offset + 1] = M[offset + 3];
            M[offset + 3] = t;
        },

        _doCryptBlock: function (M, offset, keySchedule, SUB_MIX_0, SUB_MIX_1, SUB_MIX_2, SUB_MIX_3, SBOX) {
            // Shortcut
            var nRounds = this._nRounds;

            // Get input, add round key
            var s0 = M[offset]     ^ keySchedule[0];
            var s1 = M[offset + 1] ^ keySchedule[1];
            var s2 = M[offset + 2] ^ keySchedule[2];
            var s3 = M[offset + 3] ^ keySchedule[3];

            // Key schedule row counter
            var ksRow = 4;

            // Rounds
            for (var round = 1; round < nRounds; round++) {
                // Shift rows, sub bytes, mix columns, add round key
                var t0 = SUB_MIX_0[s0 >>> 24] ^ SUB_MIX_1[(s1 >>> 16) & 0xff] ^ SUB_MIX_2[(s2 >>> 8) & 0xff] ^ SUB_MIX_3[s3 & 0xff] ^ keySchedule[ksRow++];
                var t1 = SUB_MIX_0[s1 >>> 24] ^ SUB_MIX_1[(s2 >>> 16) & 0xff] ^ SUB_MIX_2[(s3 >>> 8) & 0xff] ^ SUB_MIX_3[s0 & 0xff] ^ keySchedule[ksRow++];
                var t2 = SUB_MIX_0[s2 >>> 24] ^ SUB_MIX_1[(s3 >>> 16) & 0xff] ^ SUB_MIX_2[(s0 >>> 8) & 0xff] ^ SUB_MIX_3[s1 & 0xff] ^ keySchedule[ksRow++];
                var t3 = SUB_MIX_0[s3 >>> 24] ^ SUB_MIX_1[(s0 >>> 16) & 0xff] ^ SUB_MIX_2[(s1 >>> 8) & 0xff] ^ SUB_MIX_3[s2 & 0xff] ^ keySchedule[ksRow++];

                // Update state
                s0 = t0;
                s1 = t1;
                s2 = t2;
                s3 = t3;
            }

            // Shift rows, sub bytes, add round key
            var t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++];
            var t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++];
            var t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++];
            var t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++];

            // Set output
            M[offset]     = t0;
            M[offset + 1] = t1;
            M[offset + 2] = t2;
            M[offset + 3] = t3;
        },

        keySize: 256/32
    });

    /**
     * Shortcut functions to the cipher's object interface.
     *
     * @example
     *
     *     var ciphertext = CryptoJS.AES.encrypt(message, key, cfg);
     *     var plaintext  = CryptoJS.AES.decrypt(ciphertext, key, cfg);
     */
    C.AES = BlockCipher._createHelper(AES);
}());

define("crypto.aes", ["crypto.cipher-core"], function(){});

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
(function () {
    // Shortcuts
    var C = CryptoJS;
    var C_lib = C.lib;
    var WordArray = C_lib.WordArray;
    var Hasher = C_lib.Hasher;
    var C_algo = C.algo;

    // Reusable object
    var W = [];

    /**
     * SHA-1 hash algorithm.
     */
    var SHA1 = C_algo.SHA1 = Hasher.extend({
        _doReset: function () {
            this._hash = new WordArray.init([
                0x67452301, 0xefcdab89,
                0x98badcfe, 0x10325476,
                0xc3d2e1f0
            ]);
        },

        _doProcessBlock: function (M, offset) {
            // Shortcut
            var H = this._hash.words;

            // Working variables
            var a = H[0];
            var b = H[1];
            var c = H[2];
            var d = H[3];
            var e = H[4];

            // Computation
            for (var i = 0; i < 80; i++) {
                if (i < 16) {
                    W[i] = M[offset + i] | 0;
                } else {
                    var n = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];
                    W[i] = (n << 1) | (n >>> 31);
                }

                var t = ((a << 5) | (a >>> 27)) + e + W[i];
                if (i < 20) {
                    t += ((b & c) | (~b & d)) + 0x5a827999;
                } else if (i < 40) {
                    t += (b ^ c ^ d) + 0x6ed9eba1;
                } else if (i < 60) {
                    t += ((b & c) | (b & d) | (c & d)) - 0x70e44324;
                } else /* if (i < 80) */ {
                    t += (b ^ c ^ d) - 0x359d3e2a;
                }

                e = d;
                d = c;
                c = (b << 30) | (b >>> 2);
                b = a;
                a = t;
            }

            // Intermediate hash value
            H[0] = (H[0] + a) | 0;
            H[1] = (H[1] + b) | 0;
            H[2] = (H[2] + c) | 0;
            H[3] = (H[3] + d) | 0;
            H[4] = (H[4] + e) | 0;
        },

        _doFinalize: function () {
            // Shortcuts
            var data = this._data;
            var dataWords = data.words;

            var nBitsTotal = this._nDataBytes * 8;
            var nBitsLeft = data.sigBytes * 8;

            // Add padding
            dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = Math.floor(nBitsTotal / 0x100000000);
            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 15] = nBitsTotal;
            data.sigBytes = dataWords.length * 4;

            // Hash final blocks
            this._process();

            // Return final computed hash
            return this._hash;
        },

        clone: function () {
            var clone = Hasher.clone.call(this);
            clone._hash = this._hash.clone();

            return clone;
        }
    });

    /**
     * Shortcut function to the hasher's object interface.
     *
     * @param {WordArray|string} message The message to hash.
     *
     * @return {WordArray} The hash.
     *
     * @static
     *
     * @example
     *
     *     var hash = CryptoJS.SHA1('message');
     *     var hash = CryptoJS.SHA1(wordArray);
     */
    C.SHA1 = Hasher._createHelper(SHA1);

    /**
     * Shortcut function to the HMAC's object interface.
     *
     * @param {WordArray|string} message The message to hash.
     * @param {WordArray|string} key The secret key.
     *
     * @return {WordArray} The HMAC.
     *
     * @static
     *
     * @example
     *
     *     var hmac = CryptoJS.HmacSHA1(message, key);
     */
    C.HmacSHA1 = Hasher._createHmacHelper(SHA1);
}());

define("crypto.sha1", ["crypto.core"], function(){});

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
(function (Math) {
    // Shortcuts
    var C = CryptoJS;
    var C_lib = C.lib;
    var WordArray = C_lib.WordArray;
    var Hasher = C_lib.Hasher;
    var C_algo = C.algo;

    // Initialization and round constants tables
    var H = [];
    var K = [];

    // Compute constants
    (function () {
        function isPrime(n) {
            var sqrtN = Math.sqrt(n);
            for (var factor = 2; factor <= sqrtN; factor++) {
                if (!(n % factor)) {
                    return false;
                }
            }

            return true;
        }

        function getFractionalBits(n) {
            return ((n - (n | 0)) * 0x100000000) | 0;
        }

        var n = 2;
        var nPrime = 0;
        while (nPrime < 64) {
            if (isPrime(n)) {
                if (nPrime < 8) {
                    H[nPrime] = getFractionalBits(Math.pow(n, 1 / 2));
                }
                K[nPrime] = getFractionalBits(Math.pow(n, 1 / 3));

                nPrime++;
            }

            n++;
        }
    }());

    // Reusable object
    var W = [];

    /**
     * SHA-256 hash algorithm.
     */
    var SHA256 = C_algo.SHA256 = Hasher.extend({
        _doReset: function () {
            this._hash = new WordArray.init(H.slice(0));
        },

        _doProcessBlock: function (M, offset) {
            // Shortcut
            var H = this._hash.words;

            // Working variables
            var a = H[0];
            var b = H[1];
            var c = H[2];
            var d = H[3];
            var e = H[4];
            var f = H[5];
            var g = H[6];
            var h = H[7];

            // Computation
            for (var i = 0; i < 64; i++) {
                if (i < 16) {
                    W[i] = M[offset + i] | 0;
                } else {
                    var gamma0x = W[i - 15];
                    var gamma0  = ((gamma0x << 25) | (gamma0x >>> 7))  ^
                                  ((gamma0x << 14) | (gamma0x >>> 18)) ^
                                   (gamma0x >>> 3);

                    var gamma1x = W[i - 2];
                    var gamma1  = ((gamma1x << 15) | (gamma1x >>> 17)) ^
                                  ((gamma1x << 13) | (gamma1x >>> 19)) ^
                                   (gamma1x >>> 10);

                    W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16];
                }

                var ch  = (e & f) ^ (~e & g);
                var maj = (a & b) ^ (a & c) ^ (b & c);

                var sigma0 = ((a << 30) | (a >>> 2)) ^ ((a << 19) | (a >>> 13)) ^ ((a << 10) | (a >>> 22));
                var sigma1 = ((e << 26) | (e >>> 6)) ^ ((e << 21) | (e >>> 11)) ^ ((e << 7)  | (e >>> 25));

                var t1 = h + sigma1 + ch + K[i] + W[i];
                var t2 = sigma0 + maj;

                h = g;
                g = f;
                f = e;
                e = (d + t1) | 0;
                d = c;
                c = b;
                b = a;
                a = (t1 + t2) | 0;
            }

            // Intermediate hash value
            H[0] = (H[0] + a) | 0;
            H[1] = (H[1] + b) | 0;
            H[2] = (H[2] + c) | 0;
            H[3] = (H[3] + d) | 0;
            H[4] = (H[4] + e) | 0;
            H[5] = (H[5] + f) | 0;
            H[6] = (H[6] + g) | 0;
            H[7] = (H[7] + h) | 0;
        },

        _doFinalize: function () {
            // Shortcuts
            var data = this._data;
            var dataWords = data.words;

            var nBitsTotal = this._nDataBytes * 8;
            var nBitsLeft = data.sigBytes * 8;

            // Add padding
            dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = Math.floor(nBitsTotal / 0x100000000);
            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 15] = nBitsTotal;
            data.sigBytes = dataWords.length * 4;

            // Hash final blocks
            this._process();

            // Return final computed hash
            return this._hash;
        },

        clone: function () {
            var clone = Hasher.clone.call(this);
            clone._hash = this._hash.clone();

            return clone;
        }
    });

    /**
     * Shortcut function to the hasher's object interface.
     *
     * @param {WordArray|string} message The message to hash.
     *
     * @return {WordArray} The hash.
     *
     * @static
     *
     * @example
     *
     *     var hash = CryptoJS.SHA256('message');
     *     var hash = CryptoJS.SHA256(wordArray);
     */
    C.SHA256 = Hasher._createHelper(SHA256);

    /**
     * Shortcut function to the HMAC's object interface.
     *
     * @param {WordArray|string} message The message to hash.
     * @param {WordArray|string} key The secret key.
     *
     * @return {WordArray} The HMAC.
     *
     * @static
     *
     * @example
     *
     *     var hmac = CryptoJS.HmacSHA256(message, key);
     */
    C.HmacSHA256 = Hasher._createHmacHelper(SHA256);
}(Math));

define("crypto.sha256", ["crypto.core"], function(){});

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
(function () {
    // Shortcuts
    var C = CryptoJS;
    var C_lib = C.lib;
    var Base = C_lib.Base;
    var C_enc = C.enc;
    var Utf8 = C_enc.Utf8;
    var C_algo = C.algo;

    /**
     * HMAC algorithm.
     */
    var HMAC = C_algo.HMAC = Base.extend({
        /**
         * Initializes a newly created HMAC.
         *
         * @param {Hasher} hasher The hash algorithm to use.
         * @param {WordArray|string} key The secret key.
         *
         * @example
         *
         *     var hmacHasher = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, key);
         */
        init: function (hasher, key) {
            // Init hasher
            hasher = this._hasher = new hasher.init();

            // Convert string to WordArray, else assume WordArray already
            if (typeof key == 'string') {
                key = Utf8.parse(key);
            }

            // Shortcuts
            var hasherBlockSize = hasher.blockSize;
            var hasherBlockSizeBytes = hasherBlockSize * 4;

            // Allow arbitrary length keys
            if (key.sigBytes > hasherBlockSizeBytes) {
                key = hasher.finalize(key);
            }

            // Clamp excess bits
            key.clamp();

            // Clone key for inner and outer pads
            var oKey = this._oKey = key.clone();
            var iKey = this._iKey = key.clone();

            // Shortcuts
            var oKeyWords = oKey.words;
            var iKeyWords = iKey.words;

            // XOR keys with pad constants
            for (var i = 0; i < hasherBlockSize; i++) {
                oKeyWords[i] ^= 0x5c5c5c5c;
                iKeyWords[i] ^= 0x36363636;
            }
            oKey.sigBytes = iKey.sigBytes = hasherBlockSizeBytes;

            // Set initial values
            this.reset();
        },

        /**
         * Resets this HMAC to its initial state.
         *
         * @example
         *
         *     hmacHasher.reset();
         */
        reset: function () {
            // Shortcut
            var hasher = this._hasher;

            // Reset
            hasher.reset();
            hasher.update(this._iKey);
        },

        /**
         * Updates this HMAC with a message.
         *
         * @param {WordArray|string} messageUpdate The message to append.
         *
         * @return {HMAC} This HMAC instance.
         *
         * @example
         *
         *     hmacHasher.update('message');
         *     hmacHasher.update(wordArray);
         */
        update: function (messageUpdate) {
            this._hasher.update(messageUpdate);

            // Chainable
            return this;
        },

        /**
         * Finalizes the HMAC computation.
         * Note that the finalize operation is effectively a destructive, read-once operation.
         *
         * @param {WordArray|string} messageUpdate (Optional) A final message update.
         *
         * @return {WordArray} The HMAC.
         *
         * @example
         *
         *     var hmac = hmacHasher.finalize();
         *     var hmac = hmacHasher.finalize('message');
         *     var hmac = hmacHasher.finalize(wordArray);
         */
        finalize: function (messageUpdate) {
            // Shortcut
            var hasher = this._hasher;

            // Compute HMAC
            var innerHash = hasher.finalize(messageUpdate);
            hasher.reset();
            var hmac = hasher.finalize(this._oKey.clone().concat(innerHash));

            return hmac;
        }
    });
}());

define("crypto.hmac", ["crypto.core"], function(){});

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
/**
 * A noop padding strategy.
 */
CryptoJS.pad.NoPadding = {
    pad: function () {
    },

    unpad: function () {
    }
};

define("crypto.pad-nopadding", ["crypto.cipher-core"], function(){});

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
/**
 * Counter block mode.
 */
CryptoJS.mode.CTR = (function () {
    var CTR = CryptoJS.lib.BlockCipherMode.extend();

    var Encryptor = CTR.Encryptor = CTR.extend({
        processBlock: function (words, offset) {
            // Shortcuts
            var cipher = this._cipher
            var blockSize = cipher.blockSize;
            var iv = this._iv;
            var counter = this._counter;

            // Generate keystream
            if (iv) {
                counter = this._counter = iv.slice(0);

                // Remove IV for subsequent blocks
                this._iv = undefined;
            }
            var keystream = counter.slice(0);
            cipher.encryptBlock(keystream, 0);

            // Increment counter
            counter[blockSize - 1] = (counter[blockSize - 1] + 1) | 0

            // Encrypt
            for (var i = 0; i < blockSize; i++) {
                words[offset + i] ^= keystream[i];
            }
        }
    });

    CTR.Decryptor = Encryptor;

    return CTR;
}());

define("crypto.mode-ctr", ["crypto.cipher-core"], function(){});

;(function (root, factory) {
    if (typeof define === "function" && define.amd) {
        define('crypto',[
            "crypto.core",
            "crypto.enc-base64",
            "crypto.md5",
            "crypto.evpkdf",
            "crypto.cipher-core",
            "crypto.aes",
            "crypto.sha1",
            "crypto.sha256",
            "crypto.hmac",
            "crypto.pad-nopadding",
            "crypto.mode-ctr"
            ], function() {
                return CryptoJS;
            }
        );
    } else {
        root.CryptoJS = factory();
    }
}(this));

;(function (root, factory) {

  if (typeof define === 'function' && define.amd) {
    define('bigint',[], factory.bind(root, root.crypto || root.msCrypto))
  } else if (typeof module !== 'undefined' && module.exports) {
    module.exports = factory(require('crypto'))
  } else {
    root.BigInt = factory(root.crypto || root.msCrypto)
  }

}(this, function (crypto) {

  ////////////////////////////////////////////////////////////////////////////////////////
  // Big Integer Library v. 5.5
  // Created 2000, last modified 2013
  // Leemon Baird
  // www.leemon.com
  //
  // Version history:
  // v 5.5  17 Mar 2013
  //   - two lines of a form like "if (x<0) x+=n" had the "if" changed to "while" to
  //     handle the case when x<-n. (Thanks to James Ansell for finding that bug)
  // v 5.4  3 Oct 2009
  //   - added "var i" to greaterShift() so i is not global. (Thanks to Péter Szabó for finding that bug)
  //
  // v 5.3  21 Sep 2009
  //   - added randProbPrime(k) for probable primes
  //   - unrolled loop in mont_ (slightly faster)
  //   - millerRabin now takes a bigInt parameter rather than an int
  //
  // v 5.2  15 Sep 2009
  //   - fixed capitalization in call to int2bigInt in randBigInt
  //     (thanks to Emili Evripidou, Reinhold Behringer, and Samuel Macaleese for finding that bug)
  //
  // v 5.1  8 Oct 2007 
  //   - renamed inverseModInt_ to inverseModInt since it doesn't change its parameters
  //   - added functions GCD and randBigInt, which call GCD_ and randBigInt_
  //   - fixed a bug found by Rob Visser (see comment with his name below)
  //   - improved comments
  //
  // This file is public domain.   You can use it for any purpose without restriction.
  // I do not guarantee that it is correct, so use it at your own risk.  If you use 
  // it for something interesting, I'd appreciate hearing about it.  If you find 
  // any bugs or make any improvements, I'd appreciate hearing about those too.
  // It would also be nice if my name and URL were left in the comments.  But none 
  // of that is required.
  //
  // This code defines a bigInt library for arbitrary-precision integers.
  // A bigInt is an array of integers storing the value in chunks of bpe bits, 
  // little endian (buff[0] is the least significant word).
  // Negative bigInts are stored two's complement.  Almost all the functions treat
  // bigInts as nonnegative.  The few that view them as two's complement say so
  // in their comments.  Some functions assume their parameters have at least one 
  // leading zero element. Functions with an underscore at the end of the name put
  // their answer into one of the arrays passed in, and have unpredictable behavior 
  // in case of overflow, so the caller must make sure the arrays are big enough to 
  // hold the answer.  But the average user should never have to call any of the 
  // underscored functions.  Each important underscored function has a wrapper function 
  // of the same name without the underscore that takes care of the details for you.  
  // For each underscored function where a parameter is modified, that same variable 
  // must not be used as another argument too.  So, you cannot square x by doing 
  // multMod_(x,x,n).  You must use squareMod_(x,n) instead, or do y=dup(x); multMod_(x,y,n).
  // Or simply use the multMod(x,x,n) function without the underscore, where
  // such issues never arise, because non-underscored functions never change
  // their parameters; they always allocate new memory for the answer that is returned.
  //
  // These functions are designed to avoid frequent dynamic memory allocation in the inner loop.
  // For most functions, if it needs a BigInt as a local variable it will actually use
  // a global, and will only allocate to it only when it's not the right size.  This ensures
  // that when a function is called repeatedly with same-sized parameters, it only allocates
  // memory on the first call.
  //
  // Note that for cryptographic purposes, the calls to Math.random() must 
  // be replaced with calls to a better pseudorandom number generator.
  //
  // In the following, "bigInt" means a bigInt with at least one leading zero element,
  // and "integer" means a nonnegative integer less than radix.  In some cases, integer 
  // can be negative.  Negative bigInts are 2s complement.
  // 
  // The following functions do not modify their inputs.
  // Those returning a bigInt, string, or Array will dynamically allocate memory for that value.
  // Those returning a boolean will return the integer 0 (false) or 1 (true).
  // Those returning boolean or int will not allocate memory except possibly on the first 
  // time they're called with a given parameter size.
  // 
  // bigInt  add(x,y)               //return (x+y) for bigInts x and y.  
  // bigInt  addInt(x,n)            //return (x+n) where x is a bigInt and n is an integer.
  // string  bigInt2str(x,base)     //return a string form of bigInt x in a given base, with 2 <= base <= 95
  // int     bitSize(x)             //return how many bits long the bigInt x is, not counting leading zeros
  // bigInt  dup(x)                 //return a copy of bigInt x
  // boolean equals(x,y)            //is the bigInt x equal to the bigint y?
  // boolean equalsInt(x,y)         //is bigint x equal to integer y?
  // bigInt  expand(x,n)            //return a copy of x with at least n elements, adding leading zeros if needed
  // Array   findPrimes(n)          //return array of all primes less than integer n
  // bigInt  GCD(x,y)               //return greatest common divisor of bigInts x and y (each with same number of elements).
  // boolean greater(x,y)           //is x>y?  (x and y are nonnegative bigInts)
  // boolean greaterShift(x,y,shift)//is (x <<(shift*bpe)) > y?
  // bigInt  int2bigInt(t,n,m)      //return a bigInt equal to integer t, with at least n bits and m array elements
  // bigInt  inverseMod(x,n)        //return (x**(-1) mod n) for bigInts x and n.  If no inverse exists, it returns null
  // int     inverseModInt(x,n)     //return x**(-1) mod n, for integers x and n.  Return 0 if there is no inverse
  // boolean isZero(x)              //is the bigInt x equal to zero?
  // boolean millerRabin(x,b)       //does one round of Miller-Rabin base integer b say that bigInt x is possibly prime? (b is bigInt, 1<b<x)
  // boolean millerRabinInt(x,b)    //does one round of Miller-Rabin base integer b say that bigInt x is possibly prime? (b is int,    1<b<x)
  // bigInt  mod(x,n)               //return a new bigInt equal to (x mod n) for bigInts x and n.
  // int     modInt(x,n)            //return x mod n for bigInt x and integer n.
  // bigInt  mult(x,y)              //return x*y for bigInts x and y. This is faster when y<x.
  // bigInt  multMod(x,y,n)         //return (x*y mod n) for bigInts x,y,n.  For greater speed, let y<x.
  // boolean negative(x)            //is bigInt x negative?
  // bigInt  powMod(x,y,n)          //return (x**y mod n) where x,y,n are bigInts and ** is exponentiation.  0**0=1. Faster for odd n.
  // bigInt  randBigInt(n,s)        //return an n-bit random BigInt (n>=1).  If s=1, then the most significant of those n bits is set to 1.
  // bigInt  randTruePrime(k)       //return a new, random, k-bit, true prime bigInt using Maurer's algorithm.
  // bigInt  randProbPrime(k)       //return a new, random, k-bit, probable prime bigInt (probability it's composite less than 2^-80).
  // bigInt  str2bigInt(s,b,n,m)    //return a bigInt for number represented in string s in base b with at least n bits and m array elements
  // bigInt  sub(x,y)               //return (x-y) for bigInts x and y.  Negative answers will be 2s complement
  // bigInt  trim(x,k)              //return a copy of x with exactly k leading zero elements
  //
  //
  // The following functions each have a non-underscored version, which most users should call instead.
  // These functions each write to a single parameter, and the caller is responsible for ensuring the array 
  // passed in is large enough to hold the result. 
  //
  // void    addInt_(x,n)          //do x=x+n where x is a bigInt and n is an integer
  // void    add_(x,y)             //do x=x+y for bigInts x and y
  // void    copy_(x,y)            //do x=y on bigInts x and y
  // void    copyInt_(x,n)         //do x=n on bigInt x and integer n
  // void    GCD_(x,y)             //set x to the greatest common divisor of bigInts x and y, (y is destroyed).  (This never overflows its array).
  // boolean inverseMod_(x,n)      //do x=x**(-1) mod n, for bigInts x and n. Returns 1 (0) if inverse does (doesn't) exist
  // void    mod_(x,n)             //do x=x mod n for bigInts x and n. (This never overflows its array).
  // void    mult_(x,y)            //do x=x*y for bigInts x and y.
  // void    multMod_(x,y,n)       //do x=x*y  mod n for bigInts x,y,n.
  // void    powMod_(x,y,n)        //do x=x**y mod n, where x,y,n are bigInts (n is odd) and ** is exponentiation.  0**0=1.
  // void    randBigInt_(b,n,s)    //do b = an n-bit random BigInt. if s=1, then nth bit (most significant bit) is set to 1. n>=1.
  // void    randTruePrime_(ans,k) //do ans = a random k-bit true random prime (not just probable prime) with 1 in the msb.
  // void    sub_(x,y)             //do x=x-y for bigInts x and y. Negative answers will be 2s complement.
  //
  // The following functions do NOT have a non-underscored version. 
  // They each write a bigInt result to one or more parameters.  The caller is responsible for
  // ensuring the arrays passed in are large enough to hold the results. 
  //
  // void addShift_(x,y,ys)       //do x=x+(y<<(ys*bpe))
  // void carry_(x)               //do carries and borrows so each element of the bigInt x fits in bpe bits.
  // void divide_(x,y,q,r)        //divide x by y giving quotient q and remainder r
  // int  divInt_(x,n)            //do x=floor(x/n) for bigInt x and integer n, and return the remainder. (This never overflows its array).
  // int  eGCD_(x,y,d,a,b)        //sets a,b,d to positive bigInts such that d = GCD_(x,y) = a*x-b*y
  // void halve_(x)               //do x=floor(|x|/2)*sgn(x) for bigInt x in 2's complement.  (This never overflows its array).
  // void leftShift_(x,n)         //left shift bigInt x by n bits.  n<bpe.
  // void linComb_(x,y,a,b)       //do x=a*x+b*y for bigInts x and y and integers a and b
  // void linCombShift_(x,y,b,ys) //do x=x+b*(y<<(ys*bpe)) for bigInts x and y, and integers b and ys
  // void mont_(x,y,n,np)         //Montgomery multiplication (see comments where the function is defined)
  // void multInt_(x,n)           //do x=x*n where x is a bigInt and n is an integer.
  // void rightShift_(x,n)        //right shift bigInt x by n bits. (This never overflows its array).
  // void squareMod_(x,n)         //do x=x*x  mod n for bigInts x,n
  // void subShift_(x,y,ys)       //do x=x-(y<<(ys*bpe)). Negative answers will be 2s complement.
  //
  // The following functions are based on algorithms from the _Handbook of Applied Cryptography_
  //    powMod_()           = algorithm 14.94, Montgomery exponentiation
  //    eGCD_,inverseMod_() = algorithm 14.61, Binary extended GCD_
  //    GCD_()              = algorothm 14.57, Lehmer's algorithm
  //    mont_()             = algorithm 14.36, Montgomery multiplication
  //    divide_()           = algorithm 14.20  Multiple-precision division
  //    squareMod_()        = algorithm 14.16  Multiple-precision squaring
  //    randTruePrime_()    = algorithm  4.62, Maurer's algorithm
  //    millerRabin()       = algorithm  4.24, Miller-Rabin algorithm
  //
  // Profiling shows:
  //     randTruePrime_() spends:
  //         10% of its time in calls to powMod_()
  //         85% of its time in calls to millerRabin()
  //     millerRabin() spends:
  //         99% of its time in calls to powMod_()   (always with a base of 2)
  //     powMod_() spends:
  //         94% of its time in calls to mont_()  (almost always with x==y)
  //
  // This suggests there are several ways to speed up this library slightly:
  //     - convert powMod_ to use a Montgomery form of k-ary window (or maybe a Montgomery form of sliding window)
  //         -- this should especially focus on being fast when raising 2 to a power mod n
  //     - convert randTruePrime_() to use a minimum r of 1/3 instead of 1/2 with the appropriate change to the test
  //     - tune the parameters in randTruePrime_(), including c, m, and recLimit
  //     - speed up the single loop in mont_() that takes 95% of the runtime, perhaps by reducing checking
  //       within the loop when all the parameters are the same length.
  //
  // There are several ideas that look like they wouldn't help much at all:
  //     - replacing trial division in randTruePrime_() with a sieve (that speeds up something taking almost no time anyway)
  //     - increase bpe from 15 to 30 (that would help if we had a 32*32->64 multiplier, but not with JavaScript's 32*32->32)
  //     - speeding up mont_(x,y,n,np) when x==y by doing a non-modular, non-Montgomery square
  //       followed by a Montgomery reduction.  The intermediate answer will be twice as long as x, so that
  //       method would be slower.  This is unfortunate because the code currently spends almost all of its time
  //       doing mont_(x,x,...), both for randTruePrime_() and powMod_().  A faster method for Montgomery squaring
  //       would have a large impact on the speed of randTruePrime_() and powMod_().  HAC has a couple of poorly-worded
  //       sentences that seem to imply it's faster to do a non-modular square followed by a single
  //       Montgomery reduction, but that's obviously wrong.
  ////////////////////////////////////////////////////////////////////////////////////////

  //globals

  // The number of significant bits in the fraction of a JavaScript
  // floating-point number is 52, independent of platform.
  // See: https://github.com/arlolra/otr/issues/41

  var bpe = 26;          // bits stored per array element
  var radix = 1 << bpe;  // equals 2^bpe
  var mask = radix - 1;  // AND this with an array element to chop it down to bpe bits

  //the digits for converting to different bases
  var digitsStr='0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_=!@#$%^&*()[]{}|;:,.<>/?`~ \\\'\"+-';

  var one=int2bigInt(1,1,1);     //constant used in powMod_()

  //the following global variables are scratchpad memory to 
  //reduce dynamic memory allocation in the inner loop
  var t=new Array(0);
  var ss=t;       //used in mult_()
  var s0=t;       //used in multMod_(), squareMod_()
  var s1=t;       //used in powMod_(), multMod_(), squareMod_()
  var s2=t;       //used in powMod_(), multMod_()
  var s3=t;       //used in powMod_()
  var s4=t, s5=t; //used in mod_()
  var s6=t;       //used in bigInt2str()
  var s7=t;       //used in powMod_()
  var T=t;        //used in GCD_()
  var sa=t;       //used in mont_()
  var mr_x1=t, mr_r=t, mr_a=t;                                      //used in millerRabin()
  var eg_v=t, eg_u=t, eg_A=t, eg_B=t, eg_C=t, eg_D=t;               //used in eGCD_(), inverseMod_()
  var md_q1=t, md_q2=t, md_q3=t, md_r=t, md_r1=t, md_r2=t, md_tt=t; //used in mod_()

  var primes=t, pows=t, s_i=t, s_i2=t, s_R=t, s_rm=t, s_q=t, s_n1=t;
  var s_a=t, s_r2=t, s_n=t, s_b=t, s_d=t, s_x1=t, s_x2=t, s_aa=t; //used in randTruePrime_()
    
  var rpprb=t; //used in randProbPrimeRounds() (which also uses "primes")

  ////////////////////////////////////////////////////////////////////////////////////////


  //return array of all primes less than integer n
  function findPrimes(n) {
    var i,s,p,ans;
    s=new Array(n);
    for (i=0;i<n;i++)
      s[i]=0;
    s[0]=2;
    p=0;    //first p elements of s are primes, the rest are a sieve
    for(;s[p]<n;) {                  //s[p] is the pth prime
      for(i=s[p]*s[p]; i<n; i+=s[p]) //mark multiples of s[p]
        s[i]=1;
      p++;
      s[p]=s[p-1]+1;
      for(; s[p]<n && s[s[p]]; s[p]++); //find next prime (where s[p]==0)
    }
    ans=new Array(p);
    for(i=0;i<p;i++)
      ans[i]=s[i];
    return ans;
  }


  //does a single round of Miller-Rabin base b consider x to be a possible prime?
  //x is a bigInt, and b is an integer, with b<x
  function millerRabinInt(x,b) {
    if (mr_x1.length!=x.length) {
      mr_x1=dup(x);
      mr_r=dup(x);
      mr_a=dup(x);
    }

    copyInt_(mr_a,b);
    return millerRabin(x,mr_a);
  }

  //does a single round of Miller-Rabin base b consider x to be a possible prime?
  //x and b are bigInts with b<x
  function millerRabin(x,b) {
    var i,j,k,s;

    if (mr_x1.length!=x.length) {
      mr_x1=dup(x);
      mr_r=dup(x);
      mr_a=dup(x);
    }

    copy_(mr_a,b);
    copy_(mr_r,x);
    copy_(mr_x1,x);

    addInt_(mr_r,-1);
    addInt_(mr_x1,-1);

    //s=the highest power of two that divides mr_r

    /*
    k=0;
    for (i=0;i<mr_r.length;i++)
      for (j=1;j<mask;j<<=1)
        if (x[i] & j) {
          s=(k<mr_r.length+bpe ? k : 0); 
           i=mr_r.length;
           j=mask;
        } else
          k++;
    */

    /* http://www.javascripter.net/math/primes/millerrabinbug-bigint54.htm */
    if (isZero(mr_r)) return 0;
    for (k=0; mr_r[k]==0; k++);
    for (i=1,j=2; mr_r[k]%j==0; j*=2,i++ );
    s = k*bpe + i - 1;
    /* end */

    if (s)                
      rightShift_(mr_r,s);

    powMod_(mr_a,mr_r,x);

    if (!equalsInt(mr_a,1) && !equals(mr_a,mr_x1)) {
      j=1;
      while (j<=s-1 && !equals(mr_a,mr_x1)) {
        squareMod_(mr_a,x);
        if (equalsInt(mr_a,1)) {
          return 0;
        }
        j++;
      }
      if (!equals(mr_a,mr_x1)) {
        return 0;
      }
    }
    return 1;  
  }

  //returns how many bits long the bigInt is, not counting leading zeros.
  function bitSize(x) {
    var j,z,w;
    for (j=x.length-1; (x[j]==0) && (j>0); j--);
    for (z=0,w=x[j]; w; (w>>=1),z++);
    z+=bpe*j;
    return z;
  }

  //return a copy of x with at least n elements, adding leading zeros if needed
  function expand(x,n) {
    var ans=int2bigInt(0,(x.length>n ? x.length : n)*bpe,0);
    copy_(ans,x);
    return ans;
  }

  //return a k-bit true random prime using Maurer's algorithm.
  function randTruePrime(k) {
    var ans=int2bigInt(0,k,0);
    randTruePrime_(ans,k);
    return trim(ans,1);
  }

  //return a k-bit random probable prime with probability of error < 2^-80
  function randProbPrime(k) {
    if (k>=600) return randProbPrimeRounds(k,2); //numbers from HAC table 4.3
    if (k>=550) return randProbPrimeRounds(k,4);
    if (k>=500) return randProbPrimeRounds(k,5);
    if (k>=400) return randProbPrimeRounds(k,6);
    if (k>=350) return randProbPrimeRounds(k,7);
    if (k>=300) return randProbPrimeRounds(k,9);
    if (k>=250) return randProbPrimeRounds(k,12); //numbers from HAC table 4.4
    if (k>=200) return randProbPrimeRounds(k,15);
    if (k>=150) return randProbPrimeRounds(k,18);
    if (k>=100) return randProbPrimeRounds(k,27);
                return randProbPrimeRounds(k,40); //number from HAC remark 4.26 (only an estimate)
  }

  //return a k-bit probable random prime using n rounds of Miller Rabin (after trial division with small primes)
  function randProbPrimeRounds(k,n) {
    var ans, i, divisible, B; 
    B=30000;  //B is largest prime to use in trial division
    ans=int2bigInt(0,k,0);
    
    //optimization: try larger and smaller B to find the best limit.
    
    if (primes.length==0)
      primes=findPrimes(30000);  //check for divisibility by primes <=30000

    if (rpprb.length!=ans.length)
      rpprb=dup(ans);

    for (;;) { //keep trying random values for ans until one appears to be prime
      //optimization: pick a random number times L=2*3*5*...*p, plus a 
      //   random element of the list of all numbers in [0,L) not divisible by any prime up to p.
      //   This can reduce the amount of random number generation.
      
      randBigInt_(ans,k,0); //ans = a random odd number to check
      ans[0] |= 1; 
      divisible=0;
    
      //check ans for divisibility by small primes up to B
      for (i=0; (i<primes.length) && (primes[i]<=B); i++)
        if (modInt(ans,primes[i])==0 && !equalsInt(ans,primes[i])) {
          divisible=1;
          break;
        }      
      
      //optimization: change millerRabin so the base can be bigger than the number being checked, then eliminate the while here.
      
      //do n rounds of Miller Rabin, with random bases less than ans
      for (i=0; i<n && !divisible; i++) {
        randBigInt_(rpprb,k,0);
        while(!greater(ans,rpprb)) //pick a random rpprb that's < ans
          randBigInt_(rpprb,k,0);
        if (!millerRabin(ans,rpprb))
          divisible=1;
      }
      
      if(!divisible)
        return ans;
    }  
  }

  //return a new bigInt equal to (x mod n) for bigInts x and n.
  function mod(x,n) {
    var ans=dup(x);
    mod_(ans,n);
    return trim(ans,1);
  }

  //return (x+n) where x is a bigInt and n is an integer.
  function addInt(x,n) {
    var ans=expand(x,x.length+1);
    addInt_(ans,n);
    return trim(ans,1);
  }

  //return x*y for bigInts x and y. This is faster when y<x.
  function mult(x,y) {
    var ans=expand(x,x.length+y.length);
    mult_(ans,y);
    return trim(ans,1);
  }

  //return (x**y mod n) where x,y,n are bigInts and ** is exponentiation.  0**0=1. Faster for odd n.
  function powMod(x,y,n) {
    var ans=expand(x,n.length);  
    powMod_(ans,trim(y,2),trim(n,2),0);  //this should work without the trim, but doesn't
    return trim(ans,1);
  }

  //return (x-y) for bigInts x and y.  Negative answers will be 2s complement
  function sub(x,y) {
    var ans=expand(x,(x.length>y.length ? x.length+1 : y.length+1)); 
    sub_(ans,y);
    return trim(ans,1);
  }

  //return (x+y) for bigInts x and y.  
  function add(x,y) {
    var ans=expand(x,(x.length>y.length ? x.length+1 : y.length+1)); 
    add_(ans,y);
    return trim(ans,1);
  }

  //return (x**(-1) mod n) for bigInts x and n.  If no inverse exists, it returns null
  function inverseMod(x,n) {
    var ans=expand(x,n.length); 
    var s;
    s=inverseMod_(ans,n);
    return s ? trim(ans,1) : null;
  }

  //return (x*y mod n) for bigInts x,y,n.  For greater speed, let y<x.
  function multMod(x,y,n) {
    var ans=expand(x,n.length);
    multMod_(ans,y,n);
    return trim(ans,1);
  }

  //generate a k-bit true random prime using Maurer's algorithm,
  //and put it into ans.  The bigInt ans must be large enough to hold it.
  function randTruePrime_(ans,k) {
    var c,w,m,pm,dd,j,r,B,divisible,z,zz,recSize,recLimit;

    if (primes.length==0)
      primes=findPrimes(30000);  //check for divisibility by primes <=30000

    if (pows.length==0) {
      pows=new Array(512);
      for (j=0;j<512;j++) {
        pows[j]=Math.pow(2,j/511.0-1.0);
      }
    }

    //c and m should be tuned for a particular machine and value of k, to maximize speed
    c=0.1;  //c=0.1 in HAC
    m=20;   //generate this k-bit number by first recursively generating a number that has between k/2 and k-m bits
    recLimit=20; //stop recursion when k <=recLimit.  Must have recLimit >= 2

    if (s_i2.length!=ans.length) {
      s_i2=dup(ans);
      s_R =dup(ans);
      s_n1=dup(ans);
      s_r2=dup(ans);
      s_d =dup(ans);
      s_x1=dup(ans);
      s_x2=dup(ans);
      s_b =dup(ans);
      s_n =dup(ans);
      s_i =dup(ans);
      s_rm=dup(ans);
      s_q =dup(ans);
      s_a =dup(ans);
      s_aa=dup(ans);
    }

    if (k <= recLimit) {  //generate small random primes by trial division up to its square root
      pm=(1<<((k+2)>>1))-1; //pm is binary number with all ones, just over sqrt(2^k)
      copyInt_(ans,0);
      for (dd=1;dd;) {
        dd=0;
        ans[0]= 1 | (1<<(k-1)) | randomBitInt(k);  //random, k-bit, odd integer, with msb 1
        for (j=1;(j<primes.length) && ((primes[j]&pm)==primes[j]);j++) { //trial division by all primes 3...sqrt(2^k)
          if (0==(ans[0]%primes[j])) {
            dd=1;
            break;
          }
        }
      }
      carry_(ans);
      return;
    }

    B=c*k*k;    //try small primes up to B (or all the primes[] array if the largest is less than B).
    if (k>2*m)  //generate this k-bit number by first recursively generating a number that has between k/2 and k-m bits
      for (r=1; k-k*r<=m; )
        r=pows[randomBitInt(9)];   //r=Math.pow(2,Math.random()-1);
    else
      r=0.5;

    //simulation suggests the more complex algorithm using r=.333 is only slightly faster.

    recSize=Math.floor(r*k)+1;

    randTruePrime_(s_q,recSize);
    copyInt_(s_i2,0);
    s_i2[Math.floor((k-2)/bpe)] |= (1<<((k-2)%bpe));   //s_i2=2^(k-2)
    divide_(s_i2,s_q,s_i,s_rm);                        //s_i=floor((2^(k-1))/(2q))

    z=bitSize(s_i);

    for (;;) {
      for (;;) {  //generate z-bit numbers until one falls in the range [0,s_i-1]
        randBigInt_(s_R,z,0);
        if (greater(s_i,s_R))
          break;
      }                //now s_R is in the range [0,s_i-1]
      addInt_(s_R,1);  //now s_R is in the range [1,s_i]
      add_(s_R,s_i);   //now s_R is in the range [s_i+1,2*s_i]

      copy_(s_n,s_q);
      mult_(s_n,s_R); 
      multInt_(s_n,2);
      addInt_(s_n,1);    //s_n=2*s_R*s_q+1
      
      copy_(s_r2,s_R);
      multInt_(s_r2,2);  //s_r2=2*s_R

      //check s_n for divisibility by small primes up to B
      for (divisible=0,j=0; (j<primes.length) && (primes[j]<B); j++)
        if (modInt(s_n,primes[j])==0 && !equalsInt(s_n,primes[j])) {
          divisible=1;
          break;
        }      

      if (!divisible)    //if it passes small primes check, then try a single Miller-Rabin base 2
        if (!millerRabinInt(s_n,2)) //this line represents 75% of the total runtime for randTruePrime_ 
          divisible=1;

      if (!divisible) {  //if it passes that test, continue checking s_n
        addInt_(s_n,-3);
        for (j=s_n.length-1;(s_n[j]==0) && (j>0); j--);  //strip leading zeros
        for (zz=0,w=s_n[j]; w; (w>>=1),zz++);
        zz+=bpe*j;                             //zz=number of bits in s_n, ignoring leading zeros
        for (;;) {  //generate z-bit numbers until one falls in the range [0,s_n-1]
          randBigInt_(s_a,zz,0);
          if (greater(s_n,s_a))
            break;
        }                //now s_a is in the range [0,s_n-1]
        addInt_(s_n,3);  //now s_a is in the range [0,s_n-4]
        addInt_(s_a,2);  //now s_a is in the range [2,s_n-2]
        copy_(s_b,s_a);
        copy_(s_n1,s_n);
        addInt_(s_n1,-1);
        powMod_(s_b,s_n1,s_n);   //s_b=s_a^(s_n-1) modulo s_n
        addInt_(s_b,-1);
        if (isZero(s_b)) {
          copy_(s_b,s_a);
          powMod_(s_b,s_r2,s_n);
          addInt_(s_b,-1);
          copy_(s_aa,s_n);
          copy_(s_d,s_b);
          GCD_(s_d,s_n);  //if s_b and s_n are relatively prime, then s_n is a prime
          if (equalsInt(s_d,1)) {
            copy_(ans,s_aa);
            return;     //if we've made it this far, then s_n is absolutely guaranteed to be prime
          }
        }
      }
    }
  }

  //Return an n-bit random BigInt (n>=1).  If s=1, then the most significant of those n bits is set to 1.
  function randBigInt(n,s) {
    var a,b;
    a=Math.floor((n-1)/bpe)+2; //# array elements to hold the BigInt with a leading 0 element
    b=int2bigInt(0,0,a);
    randBigInt_(b,n,s);
    return b;
  }

  //Set b to an n-bit random BigInt.  If s=1, then the most significant of those n bits is set to 1.
  //Array b must be big enough to hold the result. Must have n>=1
  function randBigInt_(b,n,s) {
    var i,a;
    for (i=0;i<b.length;i++)
      b[i]=0;
    a=Math.floor((n-1)/bpe)+1; //# array elements to hold the BigInt
    for (i=0;i<a;i++) {
      b[i]=randomBitInt(bpe);
    }
    b[a-1] &= (2<<((n-1)%bpe))-1;
    if (s==1)
      b[a-1] |= (1<<((n-1)%bpe));
  }

  //Return the greatest common divisor of bigInts x and y (each with same number of elements).
  function GCD(x,y) {
    var xc,yc;
    xc=dup(x);
    yc=dup(y);
    GCD_(xc,yc);
    return xc;
  }

  //set x to the greatest common divisor of bigInts x and y (each with same number of elements).
  //y is destroyed.
  function GCD_(x,y) {
    var i,xp,yp,A,B,C,D,q,sing,qp;
    if (T.length!=x.length)
      T=dup(x);

    sing=1;
    while (sing) { //while y has nonzero elements other than y[0]
      sing=0;
      for (i=1;i<y.length;i++) //check if y has nonzero elements other than 0
        if (y[i]) {
          sing=1;
          break;
        }
      if (!sing) break; //quit when y all zero elements except possibly y[0]

      for (i=x.length;!x[i] && i>=0;i--);  //find most significant element of x
      xp=x[i];
      yp=y[i];
      A=1; B=0; C=0; D=1;
      while ((yp+C) && (yp+D)) {
        q =Math.floor((xp+A)/(yp+C));
        qp=Math.floor((xp+B)/(yp+D));
        if (q!=qp)
          break;
        t= A-q*C;   A=C;   C=t;    //  do (A,B,xp, C,D,yp) = (C,D,yp, A,B,xp) - q*(0,0,0, C,D,yp)      
        t= B-q*D;   B=D;   D=t;
        t=xp-q*yp; xp=yp; yp=t;
      }
      if (B) {
        copy_(T,x);
        linComb_(x,y,A,B); //x=A*x+B*y
        linComb_(y,T,D,C); //y=D*y+C*T
      } else {
        mod_(x,y);
        copy_(T,x);
        copy_(x,y);
        copy_(y,T);
      } 
    }
    if (y[0]==0)
      return;
    t=modInt(x,y[0]);
    copyInt_(x,y[0]);
    y[0]=t;
    while (y[0]) {
      x[0]%=y[0];
      t=x[0]; x[0]=y[0]; y[0]=t;
    }
  }

  //do x=x**(-1) mod n, for bigInts x and n.
  //If no inverse exists, it sets x to zero and returns 0, else it returns 1.
  //The x array must be at least as large as the n array.
  function inverseMod_(x,n) {
    var k=1+2*Math.max(x.length,n.length);

    if(!(x[0]&1)  && !(n[0]&1)) {  //if both inputs are even, then inverse doesn't exist
      copyInt_(x,0);
      return 0;
    }

    if (eg_u.length!=k) {
      eg_u=new Array(k);
      eg_v=new Array(k);
      eg_A=new Array(k);
      eg_B=new Array(k);
      eg_C=new Array(k);
      eg_D=new Array(k);
    }

    copy_(eg_u,x);
    copy_(eg_v,n);
    copyInt_(eg_A,1);
    copyInt_(eg_B,0);
    copyInt_(eg_C,0);
    copyInt_(eg_D,1);
    for (;;) {
      while(!(eg_u[0]&1)) {  //while eg_u is even
        halve_(eg_u);
        if (!(eg_A[0]&1) && !(eg_B[0]&1)) { //if eg_A==eg_B==0 mod 2
          halve_(eg_A);
          halve_(eg_B);      
        } else {
          add_(eg_A,n);  halve_(eg_A);
          sub_(eg_B,x);  halve_(eg_B);
        }
      }

      while (!(eg_v[0]&1)) {  //while eg_v is even
        halve_(eg_v);
        if (!(eg_C[0]&1) && !(eg_D[0]&1)) { //if eg_C==eg_D==0 mod 2
          halve_(eg_C);
          halve_(eg_D);      
        } else {
          add_(eg_C,n);  halve_(eg_C);
          sub_(eg_D,x);  halve_(eg_D);
        }
      }

      if (!greater(eg_v,eg_u)) { //eg_v <= eg_u
        sub_(eg_u,eg_v);
        sub_(eg_A,eg_C);
        sub_(eg_B,eg_D);
      } else {                   //eg_v > eg_u
        sub_(eg_v,eg_u);
        sub_(eg_C,eg_A);
        sub_(eg_D,eg_B);
      }

      if (equalsInt(eg_u,0)) {
        while (negative(eg_C)) //make sure answer is nonnegative
          add_(eg_C,n);
        copy_(x,eg_C);

        if (!equalsInt(eg_v,1)) { //if GCD_(x,n)!=1, then there is no inverse
          copyInt_(x,0);
          return 0;
        }
        return 1;
      }
    }
  }

  //return x**(-1) mod n, for integers x and n.  Return 0 if there is no inverse
  function inverseModInt(x,n) {
    var a=1,b=0,t;
    for (;;) {
      if (x==1) return a;
      if (x==0) return 0;
      b-=a*Math.floor(n/x);
      n%=x;

      if (n==1) return b; //to avoid negatives, change this b to n-b, and each -= to +=
      if (n==0) return 0;
      a-=b*Math.floor(x/n);
      x%=n;
    }
  }

  //this deprecated function is for backward compatibility only. 
  function inverseModInt_(x,n) {
     return inverseModInt(x,n);
  }


  //Given positive bigInts x and y, change the bigints v, a, and b to positive bigInts such that:
  //     v = GCD_(x,y) = a*x-b*y
  //The bigInts v, a, b, must have exactly as many elements as the larger of x and y.
  function eGCD_(x,y,v,a,b) {
    var g=0;
    var k=Math.max(x.length,y.length);
    if (eg_u.length!=k) {
      eg_u=new Array(k);
      eg_A=new Array(k);
      eg_B=new Array(k);
      eg_C=new Array(k);
      eg_D=new Array(k);
    }
    while(!(x[0]&1)  && !(y[0]&1)) {  //while x and y both even
      halve_(x);
      halve_(y);
      g++;
    }
    copy_(eg_u,x);
    copy_(v,y);
    copyInt_(eg_A,1);
    copyInt_(eg_B,0);
    copyInt_(eg_C,0);
    copyInt_(eg_D,1);
    for (;;) {
      while(!(eg_u[0]&1)) {  //while u is even
        halve_(eg_u);
        if (!(eg_A[0]&1) && !(eg_B[0]&1)) { //if A==B==0 mod 2
          halve_(eg_A);
          halve_(eg_B);      
        } else {
          add_(eg_A,y);  halve_(eg_A);
          sub_(eg_B,x);  halve_(eg_B);
        }
      }

      while (!(v[0]&1)) {  //while v is even
        halve_(v);
        if (!(eg_C[0]&1) && !(eg_D[0]&1)) { //if C==D==0 mod 2
          halve_(eg_C);
          halve_(eg_D);      
        } else {
          add_(eg_C,y);  halve_(eg_C);
          sub_(eg_D,x);  halve_(eg_D);
        }
      }

      if (!greater(v,eg_u)) { //v<=u
        sub_(eg_u,v);
        sub_(eg_A,eg_C);
        sub_(eg_B,eg_D);
      } else {                //v>u
        sub_(v,eg_u);
        sub_(eg_C,eg_A);
        sub_(eg_D,eg_B);
      }
      if (equalsInt(eg_u,0)) {
        while (negative(eg_C)) {   //make sure a (C) is nonnegative
          add_(eg_C,y);
          sub_(eg_D,x);
        }
        multInt_(eg_D,-1);  ///make sure b (D) is nonnegative
        copy_(a,eg_C);
        copy_(b,eg_D);
        leftShift_(v,g);
        return;
      }
    }
  }


  //is bigInt x negative?
  function negative(x) {
    return ((x[x.length-1]>>(bpe-1))&1);
  }


  //is (x << (shift*bpe)) > y?
  //x and y are nonnegative bigInts
  //shift is a nonnegative integer
  function greaterShift(x,y,shift) {
    var i, kx=x.length, ky=y.length;
    var k=((kx+shift)<ky) ? (kx+shift) : ky;
    for (i=ky-1-shift; i<kx && i>=0; i++) 
      if (x[i]>0)
        return 1; //if there are nonzeros in x to the left of the first column of y, then x is bigger
    for (i=kx-1+shift; i<ky; i++)
      if (y[i]>0)
        return 0; //if there are nonzeros in y to the left of the first column of x, then x is not bigger
    for (i=k-1; i>=shift; i--)
      if      (x[i-shift]>y[i]) return 1;
      else if (x[i-shift]<y[i]) return 0;
    return 0;
  }

  //is x > y? (x and y both nonnegative)
  function greater(x,y) {
    var i;
    var k=(x.length<y.length) ? x.length : y.length;

    for (i=x.length;i<y.length;i++)
      if (y[i])
        return 0;  //y has more digits

    for (i=y.length;i<x.length;i++)
      if (x[i])
        return 1;  //x has more digits

    for (i=k-1;i>=0;i--)
      if (x[i]>y[i])
        return 1;
      else if (x[i]<y[i])
        return 0;
    return 0;
  }

  //divide x by y giving quotient q and remainder r.  (q=floor(x/y),  r=x mod y).  All 4 are bigints.
  //x must have at least one leading zero element.
  //y must be nonzero.
  //q and r must be arrays that are exactly the same length as x. (Or q can have more).
  //Must have x.length >= y.length >= 2.
  function divide_(x,y,q,r) {
    var kx, ky;
    var i,j,y1,y2,c,a,b;
    copy_(r,x);
    for (ky=y.length;y[ky-1]==0;ky--); //ky is number of elements in y, not including leading zeros

    //normalize: ensure the most significant element of y has its highest bit set  
    b=y[ky-1];
    for (a=0; b; a++)
      b>>=1;  
    a=bpe-a;  //a is how many bits to shift so that the high order bit of y is leftmost in its array element
    leftShift_(y,a);  //multiply both by 1<<a now, then divide both by that at the end
    leftShift_(r,a);

    //Rob Visser discovered a bug: the following line was originally just before the normalization.
    for (kx=r.length;r[kx-1]==0 && kx>ky;kx--); //kx is number of elements in normalized x, not including leading zeros

    copyInt_(q,0);                      // q=0
    while (!greaterShift(y,r,kx-ky)) {  // while (leftShift_(y,kx-ky) <= r) {
      subShift_(r,y,kx-ky);             //   r=r-leftShift_(y,kx-ky)
      q[kx-ky]++;                       //   q[kx-ky]++;
    }                                   // }

    for (i=kx-1; i>=ky; i--) {
      if (r[i]==y[ky-1])
        q[i-ky]=mask;
      else
        q[i-ky]=Math.floor((r[i]*radix+r[i-1])/y[ky-1]);

      //The following for(;;) loop is equivalent to the commented while loop, 
      //except that the uncommented version avoids overflow.
      //The commented loop comes from HAC, which assumes r[-1]==y[-1]==0
      //  while (q[i-ky]*(y[ky-1]*radix+y[ky-2]) > r[i]*radix*radix+r[i-1]*radix+r[i-2])
      //    q[i-ky]--;    
      for (;;) {
        y2=(ky>1 ? y[ky-2] : 0)*q[i-ky];
        c=y2;
        y2=y2 & mask;
        c = (c - y2) / radix;
        y1=c+q[i-ky]*y[ky-1];
        c=y1;
        y1=y1 & mask;
        c = (c - y1) / radix;

        if (c==r[i] ? y1==r[i-1] ? y2>(i>1 ? r[i-2] : 0) : y1>r[i-1] : c>r[i]) 
          q[i-ky]--;
        else
          break;
      }

      linCombShift_(r,y,-q[i-ky],i-ky);    //r=r-q[i-ky]*leftShift_(y,i-ky)
      if (negative(r)) {
        addShift_(r,y,i-ky);         //r=r+leftShift_(y,i-ky)
        q[i-ky]--;
      }
    }

    rightShift_(y,a);  //undo the normalization step
    rightShift_(r,a);  //undo the normalization step
  }

  //do carries and borrows so each element of the bigInt x fits in bpe bits.
  function carry_(x) {
    var i,k,c,b;
    k=x.length;
    c=0;
    for (i=0;i<k;i++) {
      c+=x[i];
      b=0;
      if (c<0) {
        b = c & mask;
        b = -((c - b) / radix);
        c+=b*radix;
      }
      x[i]=c & mask;
      c = ((c - x[i]) / radix) - b;
    }
  }

  //return x mod n for bigInt x and integer n.
  function modInt(x,n) {
    var i,c=0;
    for (i=x.length-1; i>=0; i--)
      c=(c*radix+x[i])%n;
    return c;
  }

  //convert the integer t into a bigInt with at least the given number of bits.
  //the returned array stores the bigInt in bpe-bit chunks, little endian (buff[0] is least significant word)
  //Pad the array with leading zeros so that it has at least minSize elements.
  //There will always be at least one leading 0 element.
  function int2bigInt(t,bits,minSize) {   
    var i,k, buff;
    k=Math.ceil(bits/bpe)+1;
    k=minSize>k ? minSize : k;
    buff=new Array(k);
    copyInt_(buff,t);
    return buff;
  }

  //return the bigInt given a string representation in a given base.  
  //Pad the array with leading zeros so that it has at least minSize elements.
  //If base=-1, then it reads in a space-separated list of array elements in decimal.
  //The array will always have at least one leading zero, unless base=-1.
  function str2bigInt(s,base,minSize) {
    var d, i, j, x, y, kk;
    var k=s.length;
    if (base==-1) { //comma-separated list of array elements in decimal
      x=new Array(0);
      for (;;) {
        y=new Array(x.length+1);
        for (i=0;i<x.length;i++)
          y[i+1]=x[i];
        y[0]=parseInt(s,10);
        x=y;
        d=s.indexOf(',',0);
        if (d<1) 
          break;
        s=s.substring(d+1);
        if (s.length==0)
          break;
      }
      if (x.length<minSize) {
        y=new Array(minSize);
        copy_(y,x);
        return y;
      }
      return x;
    }

    // log2(base)*k
    var bb = base, p = 0;
    var b = base == 1 ? k : 0;
    while (bb > 1) {
      if (bb & 1) p = 1;
      b += k;
      bb >>= 1;
    }
    b += p*k;

    x=int2bigInt(0,b,0);
    for (i=0;i<k;i++) {
      d=digitsStr.indexOf(s.substring(i,i+1),0);
      if (base<=36 && d>=36)  //convert lowercase to uppercase if base<=36
        d-=26;
      if (d>=base || d<0) {   //stop at first illegal character
        break;
      }
      multInt_(x,base);
      addInt_(x,d);
    }

    for (k=x.length;k>0 && !x[k-1];k--); //strip off leading zeros
    k=minSize>k+1 ? minSize : k+1;
    y=new Array(k);
    kk=k<x.length ? k : x.length;
    for (i=0;i<kk;i++)
      y[i]=x[i];
    for (;i<k;i++)
      y[i]=0;
    return y;
  }

  //is bigint x equal to integer y?
  //y must have less than bpe bits
  function equalsInt(x,y) {
    var i;
    if (x[0]!=y)
      return 0;
    for (i=1;i<x.length;i++)
      if (x[i])
        return 0;
    return 1;
  }

  //are bigints x and y equal?
  //this works even if x and y are different lengths and have arbitrarily many leading zeros
  function equals(x,y) {
    var i;
    var k=x.length<y.length ? x.length : y.length;
    for (i=0;i<k;i++)
      if (x[i]!=y[i])
        return 0;
    if (x.length>y.length) {
      for (;i<x.length;i++)
        if (x[i])
          return 0;
    } else {
      for (;i<y.length;i++)
        if (y[i])
          return 0;
    }
    return 1;
  }

  //is the bigInt x equal to zero?
  function isZero(x) {
    var i;
    for (i=0;i<x.length;i++)
      if (x[i])
        return 0;
    return 1;
  }

  //convert a bigInt into a string in a given base, from base 2 up to base 95.
  //Base -1 prints the contents of the array representing the number.
  function bigInt2str(x,base) {
    var i,t,s="";

    if (s6.length!=x.length) 
      s6=dup(x);
    else
      copy_(s6,x);

    if (base==-1) { //return the list of array contents
      for (i=x.length-1;i>0;i--)
        s+=x[i]+',';
      s+=x[0];
    }
    else { //return it in the given base
      while (!isZero(s6)) {
        t=divInt_(s6,base);  //t=s6 % base; s6=floor(s6/base);
        s=digitsStr.substring(t,t+1)+s;
      }
    }
    if (s.length==0)
      s="0";
    return s;
  }

  //returns a duplicate of bigInt x
  function dup(x) {
    var i, buff;
    buff=new Array(x.length);
    copy_(buff,x);
    return buff;
  }

  //do x=y on bigInts x and y.  x must be an array at least as big as y (not counting the leading zeros in y).
  function copy_(x,y) {
    var i;
    var k=x.length<y.length ? x.length : y.length;
    for (i=0;i<k;i++)
      x[i]=y[i];
    for (i=k;i<x.length;i++)
      x[i]=0;
  }

  //do x=y on bigInt x and integer y.  
  function copyInt_(x,n) {
    var i,c;
    for (c=n,i=0;i<x.length;i++) {
      x[i]=c & mask;
      c>>=bpe;
    }
  }

  //do x=x+n where x is a bigInt and n is an integer.
  //x must be large enough to hold the result.
  function addInt_(x,n) {
    var i,k,c,b;
    x[0]+=n;
    k=x.length;
    c=0;
    for (i=0;i<k;i++) {
      c+=x[i];
      b=0;
      if (c<0) {
        b = c & mask;
        b = -((c - b) / radix);
        c+=b*radix;
      }
      x[i]=c & mask;
      c = ((c - x[i]) / radix) - b;
      if (!c) return; //stop carrying as soon as the carry is zero
    }
  }

  //right shift bigInt x by n bits.
  function rightShift_(x,n) {
    var i;
    var k=Math.floor(n/bpe);
    if (k) {
      for (i=0;i<x.length-k;i++) //right shift x by k elements
        x[i]=x[i+k];
      for (;i<x.length;i++)
        x[i]=0;
      n%=bpe;
    }
    for (i=0;i<x.length-1;i++) {
      x[i]=mask & ((x[i+1]<<(bpe-n)) | (x[i]>>n));
    }
    x[i]>>=n;
  }

  //do x=floor(|x|/2)*sgn(x) for bigInt x in 2's complement
  function halve_(x) {
    var i;
    for (i=0;i<x.length-1;i++) {
      x[i]=mask & ((x[i+1]<<(bpe-1)) | (x[i]>>1));
    }
    x[i]=(x[i]>>1) | (x[i] & (radix>>1));  //most significant bit stays the same
  }

  //left shift bigInt x by n bits.
  function leftShift_(x,n) {
    var i;
    var k=Math.floor(n/bpe);
    if (k) {
      for (i=x.length; i>=k; i--) //left shift x by k elements
        x[i]=x[i-k];
      for (;i>=0;i--)
        x[i]=0;  
      n%=bpe;
    }
    if (!n)
      return;
    for (i=x.length-1;i>0;i--) {
      x[i]=mask & ((x[i]<<n) | (x[i-1]>>(bpe-n)));
    }
    x[i]=mask & (x[i]<<n);
  }

  //do x=x*n where x is a bigInt and n is an integer.
  //x must be large enough to hold the result.
  function multInt_(x,n) {
    var i,k,c,b;
    if (!n)
      return;
    k=x.length;
    c=0;
    for (i=0;i<k;i++) {
      c+=x[i]*n;
      b=0;
      if (c<0) {
        b = c & mask;
        b = -((c - b) / radix);
        c+=b*radix;
      }
      x[i]=c & mask;
      c = ((c - x[i]) / radix) - b;
    }
  }

  //do x=floor(x/n) for bigInt x and integer n, and return the remainder
  function divInt_(x,n) {
    var i,r=0,s;
    for (i=x.length-1;i>=0;i--) {
      s=r*radix+x[i];
      x[i]=Math.floor(s/n);
      r=s%n;
    }
    return r;
  }

  //do the linear combination x=a*x+b*y for bigInts x and y, and integers a and b.
  //x must be large enough to hold the answer.
  function linComb_(x,y,a,b) {
    var i,c,k,kk;
    k=x.length<y.length ? x.length : y.length;
    kk=x.length;
    for (c=0,i=0;i<k;i++) {
      c+=a*x[i]+b*y[i];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
    for (i=k;i<kk;i++) {
      c+=a*x[i];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
  }

  //do the linear combination x=a*x+b*(y<<(ys*bpe)) for bigInts x and y, and integers a, b and ys.
  //x must be large enough to hold the answer.
  function linCombShift_(x,y,b,ys) {
    var i,c,k,kk;
    k=x.length<ys+y.length ? x.length : ys+y.length;
    kk=x.length;
    for (c=0,i=ys;i<k;i++) {
      c+=x[i]+b*y[i-ys];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
    for (i=k;c && i<kk;i++) {
      c+=x[i];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
  }

  //do x=x+(y<<(ys*bpe)) for bigInts x and y, and integers a,b and ys.
  //x must be large enough to hold the answer.
  function addShift_(x,y,ys) {
    var i,c,k,kk;
    k=x.length<ys+y.length ? x.length : ys+y.length;
    kk=x.length;
    for (c=0,i=ys;i<k;i++) {
      c+=x[i]+y[i-ys];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
    for (i=k;c && i<kk;i++) {
      c+=x[i];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
  }

  //do x=x-(y<<(ys*bpe)) for bigInts x and y, and integers a,b and ys.
  //x must be large enough to hold the answer.
  function subShift_(x,y,ys) {
    var i,c,k,kk;
    k=x.length<ys+y.length ? x.length : ys+y.length;
    kk=x.length;
    for (c=0,i=ys;i<k;i++) {
      c+=x[i]-y[i-ys];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
    for (i=k;c && i<kk;i++) {
      c+=x[i];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
  }

  //do x=x-y for bigInts x and y.
  //x must be large enough to hold the answer.
  //negative answers will be 2s complement
  function sub_(x,y) {
    var i,c,k,kk;
    k=x.length<y.length ? x.length : y.length;
    for (c=0,i=0;i<k;i++) {
      c+=x[i]-y[i];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
    for (i=k;c && i<x.length;i++) {
      c+=x[i];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
  }

  //do x=x+y for bigInts x and y.
  //x must be large enough to hold the answer.
  function add_(x,y) {
    var i,c,k,kk;
    k=x.length<y.length ? x.length : y.length;
    for (c=0,i=0;i<k;i++) {
      c+=x[i]+y[i];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
    for (i=k;c && i<x.length;i++) {
      c+=x[i];
      x[i]=c & mask;
      c = (c - x[i]) / radix;
    }
  }

  //do x=x*y for bigInts x and y.  This is faster when y<x.
  function mult_(x,y) {
    var i;
    if (ss.length!=2*x.length)
      ss=new Array(2*x.length);
    copyInt_(ss,0);
    for (i=0;i<y.length;i++)
      if (y[i])
        linCombShift_(ss,x,y[i],i);   //ss=1*ss+y[i]*(x<<(i*bpe))
    copy_(x,ss);
  }

  //do x=x mod n for bigInts x and n.
  function mod_(x,n) {
    if (s4.length!=x.length)
      s4=dup(x);
    else
      copy_(s4,x);
    if (s5.length!=x.length)
      s5=dup(x);  
    divide_(s4,n,s5,x);  //x = remainder of s4 / n
  }

  //do x=x*y mod n for bigInts x,y,n.
  //for greater speed, let y<x.
  function multMod_(x,y,n) {
    var i;
    if (s0.length!=2*x.length)
      s0=new Array(2*x.length);
    copyInt_(s0,0);
    for (i=0;i<y.length;i++)
      if (y[i])
        linCombShift_(s0,x,y[i],i);   //s0=1*s0+y[i]*(x<<(i*bpe))
    mod_(s0,n);
    copy_(x,s0);
  }

  //do x=x*x mod n for bigInts x,n.
  function squareMod_(x,n) {
    var i,j,d,c,kx,kn,k;
    for (kx=x.length; kx>0 && !x[kx-1]; kx--);  //ignore leading zeros in x
    k=kx>n.length ? 2*kx : 2*n.length; //k=# elements in the product, which is twice the elements in the larger of x and n
    if (s0.length!=k) 
      s0=new Array(k);
    copyInt_(s0,0);
    for (i=0;i<kx;i++) {
      c=s0[2*i]+x[i]*x[i];
      s0[2*i]=c & mask;
      c = (c - s0[2*i]) / radix;
      for (j=i+1;j<kx;j++) {
        c=s0[i+j]+2*x[i]*x[j]+c;
        s0[i+j]=(c & mask);
        c = (c - s0[i+j]) / radix;
      }
      s0[i+kx]=c;
    }
    mod_(s0,n);
    copy_(x,s0);
  }

  //return x with exactly k leading zero elements
  function trim(x,k) {
    var i,y;
    for (i=x.length; i>0 && !x[i-1]; i--);
    y=new Array(i+k);
    copy_(y,x);
    return y;
  }

  //do x=x**y mod n, where x,y,n are bigInts and ** is exponentiation.  0**0=1.
  //this is faster when n is odd.  x usually needs to have as many elements as n.
  function powMod_(x,y,n) {
    var k1,k2,kn,np;
    if(s7.length!=n.length)
      s7=dup(n);

    //for even modulus, use a simple square-and-multiply algorithm,
    //rather than using the more complex Montgomery algorithm.
    if ((n[0]&1)==0) {
      copy_(s7,x);
      copyInt_(x,1);
      while(!equalsInt(y,0)) {
        if (y[0]&1)
          multMod_(x,s7,n);
        divInt_(y,2);
        squareMod_(s7,n); 
      }
      return;
    }

    //calculate np from n for the Montgomery multiplications
    copyInt_(s7,0);
    for (kn=n.length;kn>0 && !n[kn-1];kn--);
    np=radix-inverseModInt(modInt(n,radix),radix);
    s7[kn]=1;
    multMod_(x ,s7,n);   // x = x * 2**(kn*bp) mod n

    if (s3.length!=x.length)
      s3=dup(x);
    else
      copy_(s3,x);

    for (k1=y.length-1;k1>0 & !y[k1]; k1--);  //k1=first nonzero element of y
    if (y[k1]==0) {  //anything to the 0th power is 1
      copyInt_(x,1);
      return;
    }
    for (k2=1<<(bpe-1);k2 && !(y[k1] & k2); k2>>=1);  //k2=position of first 1 bit in y[k1]
    for (;;) {
      if (!(k2>>=1)) {  //look at next bit of y
        k1--;
        if (k1<0) {
          mont_(x,one,n,np);
          return;
        }
        k2=1<<(bpe-1);
      }    
      mont_(x,x,n,np);

      if (k2 & y[k1]) //if next bit is a 1
        mont_(x,s3,n,np);
    }
  }


  //do x=x*y*Ri mod n for bigInts x,y,n, 
  //  where Ri = 2**(-kn*bpe) mod n, and kn is the 
  //  number of elements in the n array, not 
  //  counting leading zeros.  
  //x array must have at least as many elemnts as the n array
  //It's OK if x and y are the same variable.
  //must have:
  //  x,y < n
  //  n is odd
  //  np = -(n^(-1)) mod radix
  function mont_(x,y,n,np) {
    var i,j,c,ui,t,t2,ks;
    var kn=n.length;
    var ky=y.length;

    if (sa.length!=kn)
      sa=new Array(kn);
      
    copyInt_(sa,0);

    for (;kn>0 && n[kn-1]==0;kn--); //ignore leading zeros of n
    for (;ky>0 && y[ky-1]==0;ky--); //ignore leading zeros of y
    ks=sa.length-1; //sa will never have more than this many nonzero elements.  

    //the following loop consumes 95% of the runtime for randTruePrime_() and powMod_() for large numbers
    for (i=0; i<kn; i++) {
      t=sa[0]+x[i]*y[0];
      ui=((t & mask) * np) & mask;  //the inner "& mask" was needed on Safari (but not MSIE) at one time
      c=(t+ui*n[0]);
      c = (c - (c & mask)) / radix;
      t=x[i];
      
      //do sa=(sa+x[i]*y+ui*n)/b   where b=2**bpe.  Loop is unrolled 5-fold for speed
      j=1;
      for (;j<ky-4;) {
        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
      }
      for (;j<ky;)   {
        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
      }
      for (;j<kn-4;) {
        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
      }
      for (;j<kn;)   {
        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
      }
      for (;j<ks;)   {
        c+=sa[j];                t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
      }
      sa[j-1]=c & mask;
    }

    if (!greater(n,sa))
      sub_(sa,n);
    copy_(x,sa);
  }


  // otr.js additions


  // computes num / den mod n
  function divMod(num, den, n) {
    return multMod(num, inverseMod(den, n), n)
  }

  // computes one - two mod n
  function subMod(one, two, n) {
    one = mod(one, n)
    two = mod(two, n)
    if (greater(two, one)) one = add(one, n)
    return sub(one, two)
  }

  // computes 2^m as a bigInt
  function twoToThe(m) {
    var b = Math.floor(m / bpe) + 2
    var t = new Array(b)
    for (var i = 0; i < b; i++) t[i] = 0
    t[b - 2] = 1 << (m % bpe)
    return t
  }

  // cache these results for faster lookup
  var _num2bin = (function () {
    var i = 0, _num2bin= {}
    for (; i < 0x100; ++i) {
      _num2bin[i] = String.fromCharCode(i)  // 0 -> "\00"
    }
    return _num2bin
  }())

  // serialize a bigInt to an ascii string
  // padded up to pad length
  function bigInt2bits(bi, pad) {
    pad || (pad = 0)
    bi = dup(bi)
    var ba = ''
    while (!isZero(bi)) {
      ba = _num2bin[bi[0] & 0xff] + ba
      rightShift_(bi, 8)
    }
    while (ba.length < pad) {
      ba = '\x00' + ba
    }
    return ba
  }

  // converts a byte array to a bigInt
  function ba2bigInt(data) {
    var mpi = str2bigInt('0', 10, data.length)
    data.forEach(function (d, i) {
      if (i) leftShift_(mpi, 8)
      mpi[0] |= d
    })
    return mpi
  }

  // returns a function that returns an array of n bytes
  var randomBytes = (function () {

    // in node
    if ( typeof crypto !== 'undefined' &&
      typeof crypto.randomBytes === 'function' ) {
      return function (n) {
        try {
          var buf = crypto.randomBytes(n)
        } catch (e) { throw e }
        return Array.prototype.slice.call(buf, 0)
      }
    }

    // in browser
    else if ( typeof crypto !== 'undefined' &&
      typeof crypto.getRandomValues === 'function' ) {
      return function (n) {
        var buf = new Uint8Array(n)
        crypto.getRandomValues(buf)
        return Array.prototype.slice.call(buf, 0)
      }
    }

    // err
    else {
      console.log('Keys should not be generated without CSPRNG.');
      return;
      // throw new Error('Keys should not be generated without CSPRNG.')
    }

  }())

  // Salsa 20 in webworker needs a 40 byte seed
  function getSeed() {
    return randomBytes(40)
  }

  // returns a single random byte
  function randomByte() {
    return randomBytes(1)[0]
  }

  // returns a k-bit random integer
  function randomBitInt(k) {
    if (k > 31) throw new Error("Too many bits.")
    var i = 0, r = 0
    var b = Math.floor(k / 8)
    var mask = (1 << (k % 8)) - 1
    if (mask) r = randomByte() & mask
    for (; i < b; i++)
      r = (256 * r) + randomByte()
    return r
  }

  return {
      str2bigInt    : str2bigInt
    , bigInt2str    : bigInt2str
    , int2bigInt    : int2bigInt
    , multMod       : multMod
    , powMod        : powMod
    , inverseMod    : inverseMod
    , randBigInt    : randBigInt
    , randBigInt_   : randBigInt_
    , equals        : equals
    , equalsInt     : equalsInt
    , sub           : sub
    , mod           : mod
    , modInt        : modInt
    , mult          : mult
    , divInt_       : divInt_
    , rightShift_   : rightShift_
    , dup           : dup
    , greater       : greater
    , add           : add
    , isZero        : isZero
    , bitSize       : bitSize
    , millerRabin   : millerRabin
    , divide_       : divide_
    , trim          : trim
    , primes        : primes
    , findPrimes    : findPrimes
    , getSeed       : getSeed
    , divMod        : divMod
    , subMod        : subMod
    , twoToThe      : twoToThe
    , bigInt2bits   : bigInt2bits
    , ba2bigInt     : ba2bigInt
  }

}))
;
/*!
 * EventEmitter v4.2.3 - git.io/ee
 * Oliver Caldwell
 * MIT license
 * @preserve
 */

(function () {
	

	/**
	 * Class for managing events.
	 * Can be extended to provide event functionality in other classes.
	 *
	 * @class EventEmitter Manages event registering and emitting.
	 */
	function EventEmitter() {}

	// Shortcuts to improve speed and size

	// Easy access to the prototype
	var proto = EventEmitter.prototype;

	/**
	 * Finds the index of the listener for the event in it's storage array.
	 *
	 * @param {Function[]} listeners Array of listeners to search through.
	 * @param {Function} listener Method to look for.
	 * @return {Number} Index of the specified listener, -1 if not found
	 * @api private
	 */
	function indexOfListener(listeners, listener) {
		var i = listeners.length;
		while (i--) {
			if (listeners[i].listener === listener) {
				return i;
			}
		}

		return -1;
	}

	/**
	 * Alias a method while keeping the context correct, to allow for overwriting of target method.
	 *
	 * @param {String} name The name of the target method.
	 * @return {Function} The aliased method
	 * @api private
	 */
	function alias(name) {
		return function aliasClosure() {
			return this[name].apply(this, arguments);
		};
	}

	/**
	 * Returns the listener array for the specified event.
	 * Will initialise the event object and listener arrays if required.
	 * Will return an object if you use a regex search. The object contains keys for each matched event. So /ba[rz]/ might return an object containing bar and baz. But only if you have either defined them with defineEvent or added some listeners to them.
	 * Each property in the object response is an array of listener functions.
	 *
	 * @param {String|RegExp} evt Name of the event to return the listeners from.
	 * @return {Function[]|Object} All listener functions for the event.
	 */
	proto.getListeners = function getListeners(evt) {
		var events = this._getEvents();
		var response;
		var key;

		// Return a concatenated array of all matching events if
		// the selector is a regular expression.
		if (typeof evt === 'object') {
			response = {};
			for (key in events) {
				if (events.hasOwnProperty(key) && evt.test(key)) {
					response[key] = events[key];
				}
			}
		}
		else {
			response = events[evt] || (events[evt] = []);
		}

		return response;
	};

	/**
	 * Takes a list of listener objects and flattens it into a list of listener functions.
	 *
	 * @param {Object[]} listeners Raw listener objects.
	 * @return {Function[]} Just the listener functions.
	 */
	proto.flattenListeners = function flattenListeners(listeners) {
		var flatListeners = [];
		var i;

		for (i = 0; i < listeners.length; i += 1) {
			flatListeners.push(listeners[i].listener);
		}

		return flatListeners;
	};

	/**
	 * Fetches the requested listeners via getListeners but will always return the results inside an object. This is mainly for internal use but others may find it useful.
	 *
	 * @param {String|RegExp} evt Name of the event to return the listeners from.
	 * @return {Object} All listener functions for an event in an object.
	 */
	proto.getListenersAsObject = function getListenersAsObject(evt) {
		var listeners = this.getListeners(evt);
		var response;

		if (listeners instanceof Array) {
			response = {};
			response[evt] = listeners;
		}

		return response || listeners;
	};

	/**
	 * Adds a listener function to the specified event.
	 * The listener will not be added if it is a duplicate.
	 * If the listener returns true then it will be removed after it is called.
	 * If you pass a regular expression as the event name then the listener will be added to all events that match it.
	 *
	 * @param {String|RegExp} evt Name of the event to attach the listener to.
	 * @param {Function} listener Method to be called when the event is emitted. If the function returns true then it will be removed after calling.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.addListener = function addListener(evt, listener) {
		var listeners = this.getListenersAsObject(evt);
		var listenerIsWrapped = typeof listener === 'object';
		var key;

		for (key in listeners) {
			if (listeners.hasOwnProperty(key) && indexOfListener(listeners[key], listener) === -1) {
				listeners[key].push(listenerIsWrapped ? listener : {
					listener: listener,
					once: false
				});
			}
		}

		return this;
	};

	/**
	 * Alias of addListener
	 */
	proto.on = alias('addListener');

	/**
	 * Semi-alias of addListener. It will add a listener that will be
	 * automatically removed after it's first execution.
	 *
	 * @param {String|RegExp} evt Name of the event to attach the listener to.
	 * @param {Function} listener Method to be called when the event is emitted. If the function returns true then it will be removed after calling.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.addOnceListener = function addOnceListener(evt, listener) {
		return this.addListener(evt, {
			listener: listener,
			once: true
		});
	};

	/**
	 * Alias of addOnceListener.
	 */
	proto.once = alias('addOnceListener');

	/**
	 * Defines an event name. This is required if you want to use a regex to add a listener to multiple events at once. If you don't do this then how do you expect it to know what event to add to? Should it just add to every possible match for a regex? No. That is scary and bad.
	 * You need to tell it what event names should be matched by a regex.
	 *
	 * @param {String} evt Name of the event to create.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.defineEvent = function defineEvent(evt) {
		this.getListeners(evt);
		return this;
	};

	/**
	 * Uses defineEvent to define multiple events.
	 *
	 * @param {String[]} evts An array of event names to define.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.defineEvents = function defineEvents(evts) {
		for (var i = 0; i < evts.length; i += 1) {
			this.defineEvent(evts[i]);
		}
		return this;
	};

	/**
	 * Removes a listener function from the specified event.
	 * When passed a regular expression as the event name, it will remove the listener from all events that match it.
	 *
	 * @param {String|RegExp} evt Name of the event to remove the listener from.
	 * @param {Function} listener Method to remove from the event.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.removeListener = function removeListener(evt, listener) {
		var listeners = this.getListenersAsObject(evt);
		var index;
		var key;

		for (key in listeners) {
			if (listeners.hasOwnProperty(key)) {
				index = indexOfListener(listeners[key], listener);

				if (index !== -1) {
					listeners[key].splice(index, 1);
				}
			}
		}

		return this;
	};

	/**
	 * Alias of removeListener
	 */
	proto.off = alias('removeListener');

	/**
	 * Adds listeners in bulk using the manipulateListeners method.
	 * If you pass an object as the second argument you can add to multiple events at once. The object should contain key value pairs of events and listeners or listener arrays. You can also pass it an event name and an array of listeners to be added.
	 * You can also pass it a regular expression to add the array of listeners to all events that match it.
	 * Yeah, this function does quite a bit. That's probably a bad thing.
	 *
	 * @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to add to multiple events at once.
	 * @param {Function[]} [listeners] An optional array of listener functions to add.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.addListeners = function addListeners(evt, listeners) {
		// Pass through to manipulateListeners
		return this.manipulateListeners(false, evt, listeners);
	};

	/**
	 * Removes listeners in bulk using the manipulateListeners method.
	 * If you pass an object as the second argument you can remove from multiple events at once. The object should contain key value pairs of events and listeners or listener arrays.
	 * You can also pass it an event name and an array of listeners to be removed.
	 * You can also pass it a regular expression to remove the listeners from all events that match it.
	 *
	 * @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to remove from multiple events at once.
	 * @param {Function[]} [listeners] An optional array of listener functions to remove.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.removeListeners = function removeListeners(evt, listeners) {
		// Pass through to manipulateListeners
		return this.manipulateListeners(true, evt, listeners);
	};

	/**
	 * Edits listeners in bulk. The addListeners and removeListeners methods both use this to do their job. You should really use those instead, this is a little lower level.
	 * The first argument will determine if the listeners are removed (true) or added (false).
	 * If you pass an object as the second argument you can add/remove from multiple events at once. The object should contain key value pairs of events and listeners or listener arrays.
	 * You can also pass it an event name and an array of listeners to be added/removed.
	 * You can also pass it a regular expression to manipulate the listeners of all events that match it.
	 *
	 * @param {Boolean} remove True if you want to remove listeners, false if you want to add.
	 * @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to add/remove from multiple events at once.
	 * @param {Function[]} [listeners] An optional array of listener functions to add/remove.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.manipulateListeners = function manipulateListeners(remove, evt, listeners) {
		var i;
		var value;
		var single = remove ? this.removeListener : this.addListener;
		var multiple = remove ? this.removeListeners : this.addListeners;

		// If evt is an object then pass each of it's properties to this method
		if (typeof evt === 'object' && !(evt instanceof RegExp)) {
			for (i in evt) {
				if (evt.hasOwnProperty(i) && (value = evt[i])) {
					// Pass the single listener straight through to the singular method
					if (typeof value === 'function') {
						single.call(this, i, value);
					}
					else {
						// Otherwise pass back to the multiple function
						multiple.call(this, i, value);
					}
				}
			}
		}
		else {
			// So evt must be a string
			// And listeners must be an array of listeners
			// Loop over it and pass each one to the multiple method
			i = listeners.length;
			while (i--) {
				single.call(this, evt, listeners[i]);
			}
		}

		return this;
	};

	/**
	 * Removes all listeners from a specified event.
	 * If you do not specify an event then all listeners will be removed.
	 * That means every event will be emptied.
	 * You can also pass a regex to remove all events that match it.
	 *
	 * @param {String|RegExp} [evt] Optional name of the event to remove all listeners for. Will remove from every event if not passed.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.removeEvent = function removeEvent(evt) {
		var type = typeof evt;
		var events = this._getEvents();
		var key;

		// Remove different things depending on the state of evt
		if (type === 'string') {
			// Remove all listeners for the specified event
			delete events[evt];
		}
		else if (type === 'object') {
			// Remove all events matching the regex.
			for (key in events) {
				if (events.hasOwnProperty(key) && evt.test(key)) {
					delete events[key];
				}
			}
		}
		else {
			// Remove all listeners in all events
			delete this._events;
		}

		return this;
	};

	/**
	 * Emits an event of your choice.
	 * When emitted, every listener attached to that event will be executed.
	 * If you pass the optional argument array then those arguments will be passed to every listener upon execution.
	 * Because it uses `apply`, your array of arguments will be passed as if you wrote them out separately.
	 * So they will not arrive within the array on the other side, they will be separate.
	 * You can also pass a regular expression to emit to all events that match it.
	 *
	 * @param {String|RegExp} evt Name of the event to emit and execute listeners for.
	 * @param {Array} [args] Optional array of arguments to be passed to each listener.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.emitEvent = function emitEvent(evt, args) {
		var listeners = this.getListenersAsObject(evt);
		var listener;
		var i;
		var key;
		var response;

		for (key in listeners) {
			if (listeners.hasOwnProperty(key)) {
				i = listeners[key].length;

				while (i--) {
					// If the listener returns true then it shall be removed from the event
					// The function is executed either with a basic call or an apply if there is an args array
					listener = listeners[key][i];

					if (listener.once === true) {
						this.removeListener(evt, listener.listener);
					}

					response = listener.listener.apply(this, args || []);

					if (response === this._getOnceReturnValue()) {
						this.removeListener(evt, listener.listener);
					}
				}
			}
		}

		return this;
	};

	/**
	 * Alias of emitEvent
	 */
	proto.trigger = alias('emitEvent');

	/**
	 * Subtly different from emitEvent in that it will pass its arguments on to the listeners, as opposed to taking a single array of arguments to pass on.
	 * As with emitEvent, you can pass a regex in place of the event name to emit to all events that match it.
	 *
	 * @param {String|RegExp} evt Name of the event to emit and execute listeners for.
	 * @param {...*} Optional additional arguments to be passed to each listener.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.emit = function emit(evt) {
		var args = Array.prototype.slice.call(arguments, 1);
		return this.emitEvent(evt, args);
	};

	/**
	 * Sets the current value to check against when executing listeners. If a
	 * listeners return value matches the one set here then it will be removed
	 * after execution. This value defaults to true.
	 *
	 * @param {*} value The new value to check for when executing listeners.
	 * @return {Object} Current instance of EventEmitter for chaining.
	 */
	proto.setOnceReturnValue = function setOnceReturnValue(value) {
		this._onceReturnValue = value;
		return this;
	};

	/**
	 * Fetches the current value to check against when executing listeners. If
	 * the listeners return value matches this one then it should be removed
	 * automatically. It will return true by default.
	 *
	 * @return {*|Boolean} The current value to check for or the default, true.
	 * @api private
	 */
	proto._getOnceReturnValue = function _getOnceReturnValue() {
		if (this.hasOwnProperty('_onceReturnValue')) {
			return this._onceReturnValue;
		}
		else {
			return true;
		}
	};

	/**
	 * Fetches the events object and creates one if required.
	 *
	 * @return {Object} The events storage object.
	 * @api private
	 */
	proto._getEvents = function _getEvents() {
		return this._events || (this._events = {});
	};

	// Expose the class either via AMD, CommonJS or the global object
	if (typeof define === 'function' && define.amd) {
		define('eventemitter',[],function () {
			return EventEmitter;
		});
	}
	else if (typeof module === 'object' && module.exports){
		module.exports = EventEmitter;
	}
	else {
		this.EventEmitter = EventEmitter;
	}
}.call(this));

/*!

  otr.js v0.2.12 - 2014-04-15
  (c) 2014 - Arlo Breault <arlolra@gmail.com>
  Freely distributed under the MPL v2.0 license.

  This file is concatenated for the browser.
  Please see: https://github.com/arlolra/otr

*/

;(function (root, factory) {

  if (typeof define === 'function' && define.amd) {
    define('otr',[
        "jquery",
        "jquery.browser",
        "bigint",
        "crypto",
        "eventemitter"
    ], function ($, dummy, BigInt, CryptoJS, EventEmitter) {
      if ($.browser.msie) {
          return undefined;
      }
      var root = {
          BigInt: BigInt
        , CryptoJS: CryptoJS
        , EventEmitter: EventEmitter
        , OTR: {}
        , DSA: {}
      }
      return factory.call(root)
    })
  } else {
    root.OTR = {}
    root.DSA = {}
    factory.call(root)
  }

}(this, function () {

;(function () {
  

  var root = this

  var CONST = {

    // diffie-heilman
      N : 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D670C354E4ABC9804F1746C08CA237327FFFFFFFFFFFFFFFF'
    , G : '2'

    // otr message states
    , MSGSTATE_PLAINTEXT : 0
    , MSGSTATE_ENCRYPTED : 1
    , MSGSTATE_FINISHED  : 2

    // otr auth states
    , AUTHSTATE_NONE               : 0
    , AUTHSTATE_AWAITING_DHKEY     : 1
    , AUTHSTATE_AWAITING_REVEALSIG : 2
    , AUTHSTATE_AWAITING_SIG       : 3

    // whitespace tags
    , WHITESPACE_TAG    : '\x20\x09\x20\x20\x09\x09\x09\x09\x20\x09\x20\x09\x20\x09\x20\x20'
    , WHITESPACE_TAG_V2 : '\x20\x20\x09\x09\x20\x20\x09\x20'
    , WHITESPACE_TAG_V3 : '\x20\x20\x09\x09\x20\x20\x09\x09'

    // otr tags
    , OTR_TAG       : '?OTR'
    , OTR_VERSION_1 : '\x00\x01'
    , OTR_VERSION_2 : '\x00\x02'
    , OTR_VERSION_3 : '\x00\x03'

    // smp machine states
    , SMPSTATE_EXPECT0 : 0
    , SMPSTATE_EXPECT1 : 1
    , SMPSTATE_EXPECT2 : 2
    , SMPSTATE_EXPECT3 : 3
    , SMPSTATE_EXPECT4 : 4

    // unstandard status codes
    , STATUS_SEND_QUERY  : 0
    , STATUS_AKE_INIT    : 1
    , STATUS_AKE_SUCCESS : 2
    , STATUS_END_OTR     : 3

  }

  if (typeof module !== 'undefined' && module.exports) {
    module.exports = CONST
  } else {
    root.OTR.CONST = CONST
  }

}).call(this)
;(function () {
  

  var root = this

  var HLP = {}, CryptoJS, BigInt
  if (typeof module !== 'undefined' && module.exports) {
    module.exports = HLP = {}
    CryptoJS = require('../vendor/crypto.js')
    BigInt = require('../vendor/bigint.js')
  } else {
    if (root.OTR) root.OTR.HLP = HLP
    if (root.DSA) root.DSA.HLP = HLP
    CryptoJS = root.CryptoJS
    BigInt = root.BigInt
  }

  // data types (byte lengths)
  var DTS = {
      BYTE  : 1
    , SHORT : 2
    , INT   : 4
    , CTR   : 8
    , MAC   : 20
    , SIG   : 40
  }

  // otr message wrapper begin and end
  var WRAPPER_BEGIN = "?OTR"
    , WRAPPER_END   = "."

  var TWO = BigInt.str2bigInt('2', 10)

  HLP.debug = function (msg) {
    // used as HLP.debug.call(ctx, msg)
    if ( this.debug &&
         typeof this.debug !== 'function' &&
         typeof console !== 'undefined'
    ) console.log(msg)
  }

  HLP.extend = function (child, parent) {
    for (var key in parent) {
      if (Object.hasOwnProperty.call(parent, key))
        child[key] = parent[key]
    }
    function Ctor() { this.constructor = child }
    Ctor.prototype = parent.prototype
    child.prototype = new Ctor()
    child.__super__ = parent.prototype
  }

  // constant-time string comparison
  HLP.compare = function (str1, str2) {
    if (str1.length !== str2.length)
      return false
    var i = 0, result = 0
    for (; i < str1.length; i++)
      result |= str1[i].charCodeAt(0) ^ str2[i].charCodeAt(0)
    return result === 0
  }

  HLP.randomExponent = function () {
    return BigInt.randBigInt(1536)
  }

  HLP.smpHash = function (version, fmpi, smpi) {
    var sha256 = CryptoJS.algo.SHA256.create()
    sha256.update(CryptoJS.enc.Latin1.parse(HLP.packBytes(version, DTS.BYTE)))
    sha256.update(CryptoJS.enc.Latin1.parse(HLP.packMPI(fmpi)))
    if (smpi) sha256.update(CryptoJS.enc.Latin1.parse(HLP.packMPI(smpi)))
    var hash = sha256.finalize()
    return HLP.bits2bigInt(hash.toString(CryptoJS.enc.Latin1))
  }

  HLP.makeMac = function (aesctr, m) {
    var pass = CryptoJS.enc.Latin1.parse(m)
    var mac = CryptoJS.HmacSHA256(CryptoJS.enc.Latin1.parse(aesctr), pass)
    return HLP.mask(mac.toString(CryptoJS.enc.Latin1), 0, 160)
  }

  HLP.make1Mac = function (aesctr, m) {
    var pass = CryptoJS.enc.Latin1.parse(m)
    var mac = CryptoJS.HmacSHA1(CryptoJS.enc.Latin1.parse(aesctr), pass)
    return mac.toString(CryptoJS.enc.Latin1)
  }

  HLP.encryptAes = function (msg, c, iv) {
    var opts = {
        mode: CryptoJS.mode.CTR
      , iv: CryptoJS.enc.Latin1.parse(iv)
      , padding: CryptoJS.pad.NoPadding
    }
    var aesctr = CryptoJS.AES.encrypt(
        msg
      , CryptoJS.enc.Latin1.parse(c)
      , opts
    )
    var aesctr_decoded = CryptoJS.enc.Base64.parse(aesctr.toString())
    return CryptoJS.enc.Latin1.stringify(aesctr_decoded)
  }

  HLP.decryptAes = function (msg, c, iv) {
    msg = CryptoJS.enc.Latin1.parse(msg)
    var opts = {
        mode: CryptoJS.mode.CTR
      , iv: CryptoJS.enc.Latin1.parse(iv)
      , padding: CryptoJS.pad.NoPadding
    }
    return CryptoJS.AES.decrypt(
        CryptoJS.enc.Base64.stringify(msg)
      , CryptoJS.enc.Latin1.parse(c)
      , opts
    )
  }

  HLP.multPowMod = function (a, b, c, d, e) {
    return BigInt.multMod(BigInt.powMod(a, b, e), BigInt.powMod(c, d, e), e)
  }

  HLP.ZKP = function (v, c, d, e) {
    return BigInt.equals(c, HLP.smpHash(v, d, e))
  }

  // greater than, or equal
  HLP.GTOE = function (a, b) {
    return (BigInt.equals(a, b) || BigInt.greater(a, b))
  }

  HLP.between = function (x, a, b) {
    return (BigInt.greater(x, a) && BigInt.greater(b, x))
  }

  HLP.checkGroup = function (g, N_MINUS_2) {
    return HLP.GTOE(g, TWO) && HLP.GTOE(N_MINUS_2, g)
  }

  HLP.h1 = function (b, secbytes) {
    var sha1 = CryptoJS.algo.SHA1.create()
    sha1.update(CryptoJS.enc.Latin1.parse(b))
    sha1.update(CryptoJS.enc.Latin1.parse(secbytes))
    return (sha1.finalize()).toString(CryptoJS.enc.Latin1)
  }

  HLP.h2 = function (b, secbytes) {
    var sha256 = CryptoJS.algo.SHA256.create()
    sha256.update(CryptoJS.enc.Latin1.parse(b))
    sha256.update(CryptoJS.enc.Latin1.parse(secbytes))
    return (sha256.finalize()).toString(CryptoJS.enc.Latin1)
  }

  HLP.mask = function (bytes, start, n) {
    return bytes.substr(start / 8, n / 8)
  }

  var _toString = String.fromCharCode;
  HLP.packBytes = function (val, bytes) {
    val = val.toString(16)
    var nex, res = ''  // big-endian, unsigned long
    for (; bytes > 0; bytes--) {
      nex = val.length ? val.substr(-2, 2) : '0'
      val = val.substr(0, val.length - 2)
      res = _toString(parseInt(nex, 16)) + res
    }
    return res
  }

  HLP.packINT = function (d) {
    return HLP.packBytes(d, DTS.INT)
  }

  HLP.packCtr = function (d) {
    return HLP.padCtr(HLP.packBytes(d, DTS.CTR))
  }

  HLP.padCtr = function (ctr) {
    return ctr + '\x00\x00\x00\x00\x00\x00\x00\x00'
  }

  HLP.unpackCtr = function (d) {
    d = HLP.toByteArray(d.substring(0, 8))
    return HLP.unpack(d)
  }

  HLP.unpack = function (arr) {
    var val = 0, i = 0, len = arr.length
    for (; i < len; i++) {
      val = (val * 256) + arr[i]
    }
    return val
  }

  HLP.packData = function (d) {
    return HLP.packINT(d.length) + d
  }

  HLP.bits2bigInt = function (bits) {
    bits = HLP.toByteArray(bits)
    return BigInt.ba2bigInt(bits)
  }

  HLP.packMPI = function (mpi) {
    return HLP.packData(BigInt.bigInt2bits(BigInt.trim(mpi, 0)))
  }

  HLP.packSHORT = function (short) {
    return HLP.packBytes(short, DTS.SHORT)
  }

  HLP.unpackSHORT = function (short) {
    short = HLP.toByteArray(short)
    return HLP.unpack(short)
  }

  HLP.packTLV = function (type, value) {
    return HLP.packSHORT(type) + HLP.packSHORT(value.length) + value
  }

  HLP.readLen = function (msg) {
    msg = HLP.toByteArray(msg.substring(0, 4))
    return HLP.unpack(msg)
  }

  HLP.readData = function (data) {
    var n = HLP.unpack(data.splice(0, 4))
    return [n, data]
  }

  HLP.readMPI = function (data) {
    data = HLP.toByteArray(data)
    data = HLP.readData(data)
    return BigInt.ba2bigInt(data[1])
  }

  HLP.packMPIs = function (arr) {
    return arr.reduce(function (prv, cur) {
      return prv + HLP.packMPI(cur)
    }, '')
  }

  HLP.unpackMPIs = function (num, mpis) {
    var i = 0, arr = []
    for (; i < num; i++) arr.push('MPI')
    return (HLP.splitype(arr, mpis)).map(function (m) {
      return HLP.readMPI(m)
    })
  }

  HLP.wrapMsg = function (msg, fs, v3, our_it, their_it) {
    msg = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Latin1.parse(msg))
    msg = WRAPPER_BEGIN + ":" + msg + WRAPPER_END

    var its
    if (v3) {
      its = '|'
      its += (HLP.readLen(our_it)).toString(16)
      its += '|'
      its += (HLP.readLen(their_it)).toString(16)
    }

    if (!fs) return [null, msg]

    var n = Math.ceil(msg.length / fs)
    if (n > 65535) return ['Too many fragments']
    if (n == 1) return [null, msg]

    var k, bi, ei, frag, mf, mfs = []
    for (k = 1; k <= n; k++) {
      bi = (k - 1) * fs
      ei = k * fs
      frag = msg.slice(bi, ei)
      mf = WRAPPER_BEGIN
      if (v3) mf += its
      mf += ',' + k + ','
      mf += n + ','
      mf += frag + ','
      mfs.push(mf)
    }

    return [null, mfs]
  }

  HLP.splitype = function splitype(arr, msg) {
    var data = []
    arr.forEach(function (a) {
      var str
      switch (a) {
        case 'PUBKEY':
          str = splitype(['SHORT', 'MPI', 'MPI', 'MPI', 'MPI'], msg).join('')
          break
        case 'DATA':  // falls through
        case 'MPI':
          str = msg.substring(0, HLP.readLen(msg) + 4)
          break
        default:
          str = msg.substring(0, DTS[a])
      }
      data.push(str)
      msg = msg.substring(str.length)
    })
    return data
  }

  // https://github.com/msgpack/msgpack-javascript/blob/master/msgpack.js

  var _bin2num = (function () {
    var i = 0, _bin2num = {}
    for (; i < 0x100; ++i) {
      _bin2num[String.fromCharCode(i)] = i  // "\00" -> 0x00
    }
    for (i = 0x80; i < 0x100; ++i) {  // [Webkit][Gecko]
      _bin2num[String.fromCharCode(0xf700 + i)] = i  // "\f780" -> 0x80
    }
    return _bin2num
  }())

  HLP.toByteArray = function (data) {
    var rv = []
      , ary = data.split("")
      , i = -1
      , iz = ary.length
      , remain = iz % 8

    while (remain--) {
      ++i
      rv[i] = _bin2num[ary[i]]
    }
    remain = iz >> 3
    while (remain--) {
      rv.push(_bin2num[ary[++i]], _bin2num[ary[++i]],
              _bin2num[ary[++i]], _bin2num[ary[++i]],
              _bin2num[ary[++i]], _bin2num[ary[++i]],
              _bin2num[ary[++i]], _bin2num[ary[++i]])
    }
    return rv
  }

}).call(this)
;(function () {
  

  var root = this

  var CryptoJS, BigInt, Worker, WWPath, HLP
  if (typeof module !== 'undefined' && module.exports) {
    module.exports = DSA
    CryptoJS = require('../vendor/crypto.js')
    BigInt = require('../vendor/bigint.js')
    WWPath = require('path').join(__dirname, '/dsa-webworker.js')
    HLP = require('./helpers.js')
  } else {
    // copy over and expose internals
    Object.keys(root.DSA).forEach(function (k) {
      DSA[k] = root.DSA[k]
    })
    root.DSA = DSA
    CryptoJS = root.CryptoJS
    BigInt = root.BigInt
    Worker = root.Worker
    WWPath = 'dsa-webworker.js'
    HLP = DSA.HLP
  }

  var ZERO = BigInt.str2bigInt('0', 10)
    , ONE = BigInt.str2bigInt('1', 10)
    , TWO = BigInt.str2bigInt('2', 10)
    , KEY_TYPE = '\x00\x00'

  var DEBUG = false
  function timer() {
    var start = (new Date()).getTime()
    return function (s) {
      if (!DEBUG || typeof console === 'undefined') return
      var t = (new Date()).getTime()
      console.log(s + ': ' + (t - start))
      start = t
    }
  }

  function makeRandom(min, max) {
    var c = BigInt.randBigInt(BigInt.bitSize(max))
    if (!HLP.between(c, min, max)) return makeRandom(min, max)
    return c
  }

  // altered BigInt.randProbPrime()
  // n rounds of Miller Rabin (after trial division with small primes)
  var rpprb = []
  function isProbPrime(k, n) {
    var i, B = 30000, l = BigInt.bitSize(k)
    var primes = BigInt.primes

    if (primes.length === 0)
      primes = BigInt.findPrimes(B)

    if (rpprb.length != k.length)
      rpprb = BigInt.dup(k)

    // check ans for divisibility by small primes up to B
    for (i = 0; (i < primes.length) && (primes[i] <= B); i++)
      if (BigInt.modInt(k, primes[i]) === 0 && !BigInt.equalsInt(k, primes[i]))
        return 0

    // do n rounds of Miller Rabin, with random bases less than k
    for (i = 0; i < n; i++) {
      BigInt.randBigInt_(rpprb, l, 0)
      while(!BigInt.greater(k, rpprb))  // pick a random rpprb that's < k
        BigInt.randBigInt_(rpprb, l, 0)
      if (!BigInt.millerRabin(k, rpprb))
        return 0
    }

    return 1
  }

  var bit_lengths = {
      '1024': { N: 160, repeat: 40 }  // 40x should give 2^-80 confidence
    , '2048': { N: 224, repeat: 56 }
  }

  var primes = {}

  // follows go lang http://golang.org/src/pkg/crypto/dsa/dsa.go
  // fips version was removed in 0c99af0df3e7
  function generatePrimes(bit_length) {

    var t = timer()  // for debugging

    // number of MR tests to perform
    var repeat = bit_lengths[bit_length].repeat

    var N = bit_lengths[bit_length].N

    var LM1 = BigInt.twoToThe(bit_length - 1)
    var bl4 = 4 * bit_length
    var brk = false

    var q, p, rem, counter
    for (;;) {

      q = BigInt.randBigInt(N, 1)
      q[0] |= 1

      if (!isProbPrime(q, repeat)) continue
      t('q')

      for (counter = 0; counter < bl4; counter++) {
        p = BigInt.randBigInt(bit_length, 1)
        p[0] |= 1

        rem = BigInt.mod(p, q)
        rem = BigInt.sub(rem, ONE)
        p = BigInt.sub(p, rem)

        if (BigInt.greater(LM1, p)) continue
        if (!isProbPrime(p, repeat)) continue

        t('p')
        primes[bit_length] = { p: p, q: q }
        brk = true
        break
      }

      if (brk) break
    }

    var h = BigInt.dup(TWO)
    var pm1 = BigInt.sub(p, ONE)
    var e = BigInt.multMod(pm1, BigInt.inverseMod(q, p), p)

    var g
    for (;;) {
      g = BigInt.powMod(h, e, p)
      if (BigInt.equals(g, ONE)) {
        h = BigInt.add(h, ONE)
        continue
      }
      primes[bit_length].g = g
      t('g')
      return
    }

    throw new Error('Unreachable!')
  }

  function DSA(obj, opts) {
    if (!(this instanceof DSA)) return new DSA(obj, opts)

    // options
    opts = opts || {}

    // inherit
    if (obj) {
      var self = this
      ;['p', 'q', 'g', 'y', 'x'].forEach(function (prop) {
        self[prop] = obj[prop]
      })
      this.type = obj.type || KEY_TYPE
      return
    }

    // default to 1024
    var bit_length = parseInt(opts.bit_length ? opts.bit_length : 1024, 10)

    if (!bit_lengths[bit_length])
      throw new Error('Unsupported bit length.')

    // set primes
    if (!primes[bit_length])
      generatePrimes(bit_length)

    this.p = primes[bit_length].p
    this.q = primes[bit_length].q
    this.g = primes[bit_length].g

    // key type
    this.type = KEY_TYPE

    // private key
    this.x = makeRandom(ZERO, this.q)

    // public keys (p, q, g, y)
    this.y = BigInt.powMod(this.g, this.x, this.p)

    // nocache?
    if (opts.nocache) primes[bit_length] = null
  }

  DSA.prototype = {

    constructor: DSA,

    packPublic: function () {
      var str = this.type
      str += HLP.packMPI(this.p)
      str += HLP.packMPI(this.q)
      str += HLP.packMPI(this.g)
      str += HLP.packMPI(this.y)
      return str
    },

    packPrivate: function () {
      var str = this.packPublic() + HLP.packMPI(this.x)
      str = CryptoJS.enc.Latin1.parse(str)
      return str.toString(CryptoJS.enc.Base64)
    },

    // http://www.imperialviolet.org/2013/06/15/suddendeathentropy.html
    generateNonce: function (m) {
      var priv = BigInt.bigInt2bits(BigInt.trim(this.x, 0))
      var rand = BigInt.bigInt2bits(BigInt.randBigInt(256))

      var sha256 = CryptoJS.algo.SHA256.create()
      sha256.update(CryptoJS.enc.Latin1.parse(priv))
      sha256.update(m)
      sha256.update(CryptoJS.enc.Latin1.parse(rand))

      var hash = sha256.finalize()
      hash = HLP.bits2bigInt(hash.toString(CryptoJS.enc.Latin1))
      BigInt.rightShift_(hash, 256 - BigInt.bitSize(this.q))

      return HLP.between(hash, ZERO, this.q) ? hash : this.generateNonce(m)
    },

    sign: function (m) {
      m = CryptoJS.enc.Latin1.parse(m)
      var b = BigInt.str2bigInt(m.toString(CryptoJS.enc.Hex), 16)
      var k, r = ZERO, s = ZERO
      while (BigInt.isZero(s) || BigInt.isZero(r)) {
        k = this.generateNonce(m)
        r = BigInt.mod(BigInt.powMod(this.g, k, this.p), this.q)
        if (BigInt.isZero(r)) continue
        s = BigInt.inverseMod(k, this.q)
        s = BigInt.mult(s, BigInt.add(b, BigInt.mult(this.x, r)))
        s = BigInt.mod(s, this.q)
      }
      return [r, s]
    },

    fingerprint: function () {
      var pk = this.packPublic()
      if (this.type === KEY_TYPE) pk = pk.substring(2)
      pk = CryptoJS.enc.Latin1.parse(pk)
      return CryptoJS.SHA1(pk).toString(CryptoJS.enc.Hex)
    }

  }

  DSA.parsePublic = function (str, priv) {
    var fields = ['SHORT', 'MPI', 'MPI', 'MPI', 'MPI']
    if (priv) fields.push('MPI')
    str = HLP.splitype(fields, str)
    var obj = {
        type: str[0]
      , p: HLP.readMPI(str[1])
      , q: HLP.readMPI(str[2])
      , g: HLP.readMPI(str[3])
      , y: HLP.readMPI(str[4])
    }
    if (priv) obj.x = HLP.readMPI(str[5])
    return new DSA(obj)
  }

  function tokenizeStr(str) {
    var start, end

    start = str.indexOf("(")
    end = str.lastIndexOf(")")

    if (start < 0 || end < 0)
      throw new Error("Malformed S-Expression")

    str = str.substring(start + 1, end)

    var splt = str.search(/\s/)
    var obj = {
        type: str.substring(0, splt)
      , val: []
    }

    str = str.substring(splt + 1, end)
    start = str.indexOf("(")

    if (start < 0) obj.val.push(str)
    else {

      var i, len, ss, es
      while (start > -1) {
        i = start + 1
        len = str.length
        for (ss = 1, es = 0; i < len && es < ss; i++) {
          if (str[i] === "(") ss++
          if (str[i] === ")") es++
        }
        obj.val.push(tokenizeStr(str.substring(start, ++i)))
        str = str.substring(++i)
        start = str.indexOf("(")
      }

    }
    return obj
  }

  function parseLibotr(obj) {
    if (!obj.type) throw new Error("Parse error.")

    var o, val
    if (obj.type === "privkeys") {
      o = []
      obj.val.forEach(function (i) {
        o.push(parseLibotr(i))
      })
      return o
    }

    o = {}
    obj.val.forEach(function (i) {

      val = i.val[0]
      if (typeof val === "string") {

        if (val.indexOf("#") === 0) {
          val = val.substring(1, val.lastIndexOf("#"))
          val = BigInt.str2bigInt(val, 16)
        }

      } else {
        val = parseLibotr(i)
      }

      o[i.type] = val
    })

    return o
  }

  DSA.parsePrivate = function (str, libotr) {
    if (!libotr) {
      str = CryptoJS.enc.Base64.parse(str)
      str = str.toString(CryptoJS.enc.Latin1)
      return DSA.parsePublic(str, true)
    }
    // only returning the first key found
    return parseLibotr(tokenizeStr(str))[0]["private-key"].dsa
  }

  DSA.verify = function (key, m, r, s) {
    if (!HLP.between(r, ZERO, key.q) || !HLP.between(s, ZERO, key.q))
      return false

    var hm = CryptoJS.enc.Latin1.parse(m)  // CryptoJS.SHA1(m)
    hm = BigInt.str2bigInt(hm.toString(CryptoJS.enc.Hex), 16)

    var w = BigInt.inverseMod(s, key.q)
    var u1 = BigInt.multMod(hm, w, key.q)
    var u2 = BigInt.multMod(r, w, key.q)

    u1 = BigInt.powMod(key.g, u1, key.p)
    u2 = BigInt.powMod(key.y, u2, key.p)

    var v = BigInt.mod(BigInt.multMod(u1, u2, key.p), key.q)

    return BigInt.equals(v, r)
  }

  DSA.createInWebWorker = function (options, cb) {
    var opts = {
        path: WWPath
      , seed: BigInt.getSeed
    }
    if (options && typeof options === 'object')
      Object.keys(options).forEach(function (k) {
        opts[k] = options[k]
      })

    // load optional dep. in node
    if (typeof module !== 'undefined' && module.exports)
      Worker = require('webworker-threads').Worker

    var worker = new Worker(opts.path)
    worker.onmessage = function (e) {
      var data = e.data
      switch (data.type) {
        case "debug":
          if (!DEBUG || typeof console === 'undefined') return
          console.log(data.val)
          break;
        case "data":
          worker.terminate()
          cb(DSA.parsePrivate(data.val))
          break;
        default:
          throw new Error("Unrecognized type.")
      }
    }
    worker.postMessage({
        seed: opts.seed()
      , imports: opts.imports
      , debug: DEBUG
    })
  }

}).call(this)
;(function () {
  

  var root = this

  var Parse = {}, CryptoJS, CONST, HLP
  if (typeof module !== 'undefined' && module.exports) {
    module.exports = Parse
    CryptoJS = require('../vendor/crypto.js')
    CONST = require('./const.js')
    HLP = require('./helpers.js')
  } else {
    root.OTR.Parse = Parse
    CryptoJS = root.CryptoJS
    CONST = root.OTR.CONST
    HLP = root.OTR.HLP
  }

  // whitespace tags
  var tags = {}
  tags[CONST.WHITESPACE_TAG_V2] = CONST.OTR_VERSION_2
  tags[CONST.WHITESPACE_TAG_V3] = CONST.OTR_VERSION_3

  Parse.parseMsg = function (otr, msg) {

    var ver = []

    // is this otr?
    var start = msg.indexOf(CONST.OTR_TAG)
    if (!~start) {

      // restart fragments
      this.initFragment(otr)

      // whitespace tags
      ind = msg.indexOf(CONST.WHITESPACE_TAG)

      if (~ind) {

        msg = msg.split('')
        msg.splice(ind, 16)

        var tag, len = msg.length
        for (; ind < len;) {
          tag = msg.slice(ind, ind + 8).join('')
          if (Object.hasOwnProperty.call(tags, tag)) {
            msg.splice(ind, 8)
            ver.push(tags[tag])
            continue
          }
          ind += 8
        }

        msg = msg.join('')

      }

      return { msg: msg, ver: ver }
    }

    var ind = start + CONST.OTR_TAG.length
    var com = msg[ind]

    // message fragment
    if (com === ',' || com === '|') {
      return this.msgFragment(otr, msg.substring(ind + 1), (com === '|'))
    }

    this.initFragment(otr)

    // query message
    if (~['?', 'v'].indexOf(com)) {

      // version 1
      if (msg[ind] === '?') {
        ver.push(CONST.OTR_VERSION_1)
        ind += 1
      }

      // other versions
      var vers = {
          '2': CONST.OTR_VERSION_2
        , '3': CONST.OTR_VERSION_3
      }
      var qs = msg.substring(ind + 1)
      var qi = qs.indexOf('?')

      if (qi >= 1) {
        qs = qs.substring(0, qi).split('')
        if (msg[ind] === 'v') {
          qs.forEach(function (q) {
            if (Object.hasOwnProperty.call(vers, q)) ver.push(vers[q])
          })
        }
      }

      return { cls: 'query', ver: ver }
    }

    // otr message
    if (com === ':') {

      ind += 1

      var info = msg.substring(ind, ind + 4)
      if (info.length < 4) return { msg: msg }
      info = CryptoJS.enc.Base64.parse(info).toString(CryptoJS.enc.Latin1)

      var version = info.substring(0, 2)
      var type = info.substring(2)

      // supporting otr versions 2 and 3
      if (!otr['ALLOW_V' + HLP.unpackSHORT(version)]) return { msg: msg }

      ind += 4

      var end = msg.substring(ind).indexOf('.')
      if (!~end) return { msg: msg }

      msg = CryptoJS.enc.Base64.parse(msg.substring(ind, ind + end))
      msg = CryptoJS.enc.Latin1.stringify(msg)

      // instance tags
      var instance_tags
      if (version === CONST.OTR_VERSION_3) {
        instance_tags = msg.substring(0, 8)
        msg = msg.substring(8)
      }

      var cls
      if (~['\x02', '\x0a', '\x11', '\x12'].indexOf(type)) {
        cls = 'ake'
      } else if (type === '\x03') {
        cls = 'data'
      }

      return {
          version: version
        , type: type
        , msg: msg
        , cls: cls
        , instance_tags: instance_tags
      }
    }

    // error message
    if (msg.substring(ind, ind + 7) === ' Error:') {
      if (otr.ERROR_START_AKE) {
        otr.sendQueryMsg()
      }
      return { msg: msg.substring(ind + 7), cls: 'error' }
    }

    return { msg: msg }
  }

  Parse.initFragment = function (otr) {
    otr.fragment = { s: '', j: 0, k: 0 }
  }

  Parse.msgFragment = function (otr, msg, v3) {

    msg = msg.split(',')

    // instance tags
    if (v3) {
      var its = msg.shift().split('|')
      var their_it = HLP.packINT(parseInt(its[0], 16))
      var our_it = HLP.packINT(parseInt(its[1], 16))
      if (otr.checkInstanceTags(their_it + our_it)) return  // ignore
    }

    if (msg.length < 4 ||
      isNaN(parseInt(msg[0], 10)) ||
      isNaN(parseInt(msg[1], 10))
    ) return

    var k = parseInt(msg[0], 10)
    var n = parseInt(msg[1], 10)
    msg = msg[2]

    if (n < k || n === 0 || k === 0) {
      this.initFragment(otr)
      return
    }

    if (k === 1) {
      this.initFragment(otr)
      otr.fragment = { k: 1, n: n, s: msg }
    } else if (n === otr.fragment.n && k === (otr.fragment.k + 1)) {
      otr.fragment.s += msg
      otr.fragment.k += 1
    } else {
      this.initFragment(otr)
    }

    if (n === k) {
      msg = otr.fragment.s
      this.initFragment(otr)
      return this.parseMsg(otr, msg)
    }

    return
  }

}).call(this)
;(function () {
  

  var root = this

  var CryptoJS, BigInt, CONST, HLP, DSA
  if (typeof module !== 'undefined' && module.exports) {
    module.exports = AKE
    CryptoJS = require('../vendor/crypto.js')
    BigInt = require('../vendor/bigint.js')
    CONST = require('./const.js')
    HLP = require('./helpers.js')
    DSA = require('./dsa.js')
  } else {
    root.OTR.AKE = AKE
    CryptoJS = root.CryptoJS
    BigInt = root.BigInt
    CONST = root.OTR.CONST
    HLP = root.OTR.HLP
    DSA = root.DSA
  }

  // diffie-hellman modulus
  // see group 5, RFC 3526
  var N = BigInt.str2bigInt(CONST.N, 16)
  var N_MINUS_2 = BigInt.sub(N, BigInt.str2bigInt('2', 10))

  function hMac(gx, gy, pk, kid, m) {
    var pass = CryptoJS.enc.Latin1.parse(m)
    var hmac = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, pass)
    hmac.update(CryptoJS.enc.Latin1.parse(HLP.packMPI(gx)))
    hmac.update(CryptoJS.enc.Latin1.parse(HLP.packMPI(gy)))
    hmac.update(CryptoJS.enc.Latin1.parse(pk))
    hmac.update(CryptoJS.enc.Latin1.parse(kid))
    return (hmac.finalize()).toString(CryptoJS.enc.Latin1)
  }

  // AKE constructor
  function AKE(otr) {
    if (!(this instanceof AKE)) return new AKE(otr)

    // otr instance
    this.otr = otr

    // our keys
    this.our_dh = otr.our_old_dh
    this.our_keyid = otr.our_keyid - 1

    // their keys
    this.their_y = null
    this.their_keyid = null
    this.their_priv_pk = null

    // state
    this.ssid = null
    this.transmittedRS = false
    this.r = null

    // bind methods
    var self = this
    ;['sendMsg'].forEach(function (meth) {
      self[meth] = self[meth].bind(self)
    })
  }

  AKE.prototype = {

    constructor: AKE,

    createKeys: function(g) {
      var s = BigInt.powMod(g, this.our_dh.privateKey, N)
      var secbytes = HLP.packMPI(s)
      this.ssid = HLP.mask(HLP.h2('\x00', secbytes), 0, 64)  // first 64-bits
      var tmp = HLP.h2('\x01', secbytes)
      this.c = HLP.mask(tmp, 0, 128)  // first 128-bits
      this.c_prime = HLP.mask(tmp, 128, 128)  // second 128-bits
      this.m1 = HLP.h2('\x02', secbytes)
      this.m2 = HLP.h2('\x03', secbytes)
      this.m1_prime = HLP.h2('\x04', secbytes)
      this.m2_prime = HLP.h2('\x05', secbytes)
    },

    verifySignMac: function (mac, aesctr, m2, c, their_y, our_dh_pk, m1, ctr) {
      // verify mac
      var vmac = HLP.makeMac(aesctr, m2)
      if (!HLP.compare(mac, vmac))
        return ['MACs do not match.']

      // decrypt x
      var x = HLP.decryptAes(aesctr.substring(4), c, ctr)
      x = HLP.splitype(['PUBKEY', 'INT', 'SIG'], x.toString(CryptoJS.enc.Latin1))

      var m = hMac(their_y, our_dh_pk, x[0], x[1], m1)
      var pub = DSA.parsePublic(x[0])

      var r = HLP.bits2bigInt(x[2].substring(0, 20))
      var s = HLP.bits2bigInt(x[2].substring(20))

      // verify sign m
      if (!DSA.verify(pub, m, r, s)) return ['Cannot verify signature of m.']

      return [null, HLP.readLen(x[1]), pub]
    },

    makeM: function (their_y, m1, c, m2) {
      var pk = this.otr.priv.packPublic()
      var kid = HLP.packINT(this.our_keyid)
      var m = hMac(this.our_dh.publicKey, their_y, pk, kid, m1)
      m = this.otr.priv.sign(m)
      var msg = pk + kid
      msg += BigInt.bigInt2bits(m[0], 20)  // pad to 20 bytes
      msg += BigInt.bigInt2bits(m[1], 20)
      msg = CryptoJS.enc.Latin1.parse(msg)
      var aesctr = HLP.packData(HLP.encryptAes(msg, c, HLP.packCtr(0)))
      var mac = HLP.makeMac(aesctr, m2)
      return aesctr + mac
    },

    akeSuccess: function (version) {
      HLP.debug.call(this.otr, 'success')

      if (BigInt.equals(this.their_y, this.our_dh.publicKey))
        return this.otr.error('equal keys - we have a problem.', true)

      this.otr.our_old_dh = this.our_dh
      this.otr.their_priv_pk = this.their_priv_pk

      if (!(
        (this.their_keyid === this.otr.their_keyid &&
         BigInt.equals(this.their_y, this.otr.their_y)) ||
        (this.their_keyid === (this.otr.their_keyid - 1) &&
         BigInt.equals(this.their_y, this.otr.their_old_y))
      )) {

        this.otr.their_y = this.their_y
        this.otr.their_old_y = null
        this.otr.their_keyid = this.their_keyid

        // rotate keys
        this.otr.sessKeys[0] = [ new this.otr.DHSession(
            this.otr.our_dh
          , this.otr.their_y
        ), null ]
        this.otr.sessKeys[1] = [ new this.otr.DHSession(
            this.otr.our_old_dh
          , this.otr.their_y
        ), null ]

      }

      // ake info
      this.otr.ssid = this.ssid
      this.otr.transmittedRS = this.transmittedRS
      this.otr_version = version

      // go encrypted
      this.otr.authstate = CONST.AUTHSTATE_NONE
      this.otr.msgstate = CONST.MSGSTATE_ENCRYPTED

      // null out values
      this.r = null
      this.myhashed = null
      this.dhcommit = null
      this.encrypted = null
      this.hashed = null

      this.otr.trigger('status', [CONST.STATUS_AKE_SUCCESS])

      // send stored msgs
      this.otr.sendStored()
    },

    handleAKE: function (msg) {
      var send, vsm, type
      var version = msg.version

      switch (msg.type) {

        case '\x02':
          HLP.debug.call(this.otr, 'd-h key message')

          msg = HLP.splitype(['DATA', 'DATA'], msg.msg)

          if (this.otr.authstate === CONST.AUTHSTATE_AWAITING_DHKEY) {
            var ourHash = HLP.readMPI(this.myhashed)
            var theirHash = HLP.readMPI(msg[1])
            if (BigInt.greater(ourHash, theirHash)) {
              type = '\x02'
              send = this.dhcommit
              break  // ignore
            } else {
              // forget
              this.our_dh = this.otr.dh()
              this.otr.authstate = CONST.AUTHSTATE_NONE
              this.r = null
              this.myhashed = null
            }
          } else if (
            this.otr.authstate === CONST.AUTHSTATE_AWAITING_SIG
          ) this.our_dh = this.otr.dh()

          this.otr.authstate = CONST.AUTHSTATE_AWAITING_REVEALSIG

          this.encrypted = msg[0].substring(4)
          this.hashed = msg[1].substring(4)

          type = '\x0a'
          send = HLP.packMPI(this.our_dh.publicKey)
          break

        case '\x0a':
          HLP.debug.call(this.otr, 'reveal signature message')

          msg = HLP.splitype(['MPI'], msg.msg)

          if (this.otr.authstate !== CONST.AUTHSTATE_AWAITING_DHKEY) {
            if (this.otr.authstate === CONST.AUTHSTATE_AWAITING_SIG) {
              if (!BigInt.equals(this.their_y, HLP.readMPI(msg[0]))) return
            } else {
              return  // ignore
            }
          }

          this.otr.authstate = CONST.AUTHSTATE_AWAITING_SIG

          this.their_y = HLP.readMPI(msg[0])

          // verify gy is legal 2 <= gy <= N-2
          if (!HLP.checkGroup(this.their_y, N_MINUS_2))
            return this.otr.error('Illegal g^y.', true)

          this.createKeys(this.their_y)

          type = '\x11'
          send = HLP.packMPI(this.r)
          send += this.makeM(this.their_y, this.m1, this.c, this.m2)

          this.m1 = null
          this.m2 = null
          this.c = null
          break

        case '\x11':
          HLP.debug.call(this.otr, 'signature message')

          if (this.otr.authstate !== CONST.AUTHSTATE_AWAITING_REVEALSIG)
            return  // ignore

          msg = HLP.splitype(['DATA', 'DATA', 'MAC'], msg.msg)

          this.r = HLP.readMPI(msg[0])

          // decrypt their_y
          var key = CryptoJS.enc.Hex.parse(BigInt.bigInt2str(this.r, 16))
          key = CryptoJS.enc.Latin1.stringify(key)

          var gxmpi = HLP.decryptAes(this.encrypted, key, HLP.packCtr(0))
          gxmpi = gxmpi.toString(CryptoJS.enc.Latin1)

          this.their_y = HLP.readMPI(gxmpi)

          // verify hash
          var hash = CryptoJS.SHA256(CryptoJS.enc.Latin1.parse(gxmpi))

          if (!HLP.compare(this.hashed, hash.toString(CryptoJS.enc.Latin1)))
            return this.otr.error('Hashed g^x does not match.', true)

          // verify gx is legal 2 <= g^x <= N-2
          if (!HLP.checkGroup(this.their_y, N_MINUS_2))
            return this.otr.error('Illegal g^x.', true)

          this.createKeys(this.their_y)

          vsm = this.verifySignMac(
              msg[2]
            , msg[1]
            , this.m2
            , this.c
            , this.their_y
            , this.our_dh.publicKey
            , this.m1
            , HLP.packCtr(0)
          )
          if (vsm[0]) return this.otr.error(vsm[0], true)

          // store their key
          this.their_keyid = vsm[1]
          this.their_priv_pk = vsm[2]

          send = this.makeM(
              this.their_y
            , this.m1_prime
            , this.c_prime
            , this.m2_prime
          )

          this.m1 = null
          this.m2 = null
          this.m1_prime = null
          this.m2_prime = null
          this.c = null
          this.c_prime = null

          this.sendMsg(version, '\x12', send)
          this.akeSuccess(version)
          return

        case '\x12':
          HLP.debug.call(this.otr, 'data message')

          if (this.otr.authstate !== CONST.AUTHSTATE_AWAITING_SIG)
            return  // ignore

          msg = HLP.splitype(['DATA', 'MAC'], msg.msg)

          vsm = this.verifySignMac(
              msg[1]
            , msg[0]
            , this.m2_prime
            , this.c_prime
            , this.their_y
            , this.our_dh.publicKey
            , this.m1_prime
            , HLP.packCtr(0)
          )
          if (vsm[0]) return this.otr.error(vsm[0], true)

          // store their key
          this.their_keyid = vsm[1]
          this.their_priv_pk = vsm[2]

          this.m1_prime = null
          this.m2_prime = null
          this.c_prime = null

          this.transmittedRS = true
          this.akeSuccess(version)
          return

        default:
          return  // ignore

      }

      this.sendMsg(version, type, send)
    },

    sendMsg: function (version, type, msg) {
      var send = version + type
      var v3 = (version === CONST.OTR_VERSION_3)

      // instance tags for v3
      if (v3) {
        HLP.debug.call(this.otr, 'instance tags')
        send += this.otr.our_instance_tag
        send += this.otr.their_instance_tag
      }

      send += msg

      // fragment message if necessary
      send = HLP.wrapMsg(
          send
        , this.otr.fragment_size
        , v3
        , this.otr.our_instance_tag
        , this.otr.their_instance_tag
      )
      if (send[0]) return this.otr.error(send[0])

      this.otr.io(send[1])
    },

    initiateAKE: function (version) {
      HLP.debug.call(this.otr, 'd-h commit message')

      this.otr.trigger('status', [CONST.STATUS_AKE_INIT])

      this.otr.authstate = CONST.AUTHSTATE_AWAITING_DHKEY

      var gxmpi = HLP.packMPI(this.our_dh.publicKey)
      gxmpi = CryptoJS.enc.Latin1.parse(gxmpi)

      this.r = BigInt.randBigInt(128)
      var key = CryptoJS.enc.Hex.parse(BigInt.bigInt2str(this.r, 16))
      key = CryptoJS.enc.Latin1.stringify(key)

      this.myhashed = CryptoJS.SHA256(gxmpi)
      this.myhashed = HLP.packData(this.myhashed.toString(CryptoJS.enc.Latin1))

      this.dhcommit = HLP.packData(HLP.encryptAes(gxmpi, key, HLP.packCtr(0)))
      this.dhcommit += this.myhashed

      this.sendMsg(version, '\x02', this.dhcommit)
    }

  }

}).call(this)
;(function () {
  

  var root = this

  var CryptoJS, BigInt,  EventEmitter, CONST, HLP
  if (typeof module !== 'undefined' && module.exports) {
    module.exports = SM
    CryptoJS = require('../vendor/crypto.js')
    BigInt = require('../vendor/bigint.js')
    EventEmitter = require('../vendor/eventemitter.js')
    CONST = require('./const.js')
    HLP = require('./helpers.js')
  } else {
    root.OTR.SM = SM
    CryptoJS = root.CryptoJS
    BigInt = root.BigInt
    EventEmitter = root.EventEmitter
    CONST = root.OTR.CONST
    HLP = root.OTR.HLP
  }

  // diffie-hellman modulus and generator
  // see group 5, RFC 3526
  var G = BigInt.str2bigInt(CONST.G, 10)
  var N = BigInt.str2bigInt(CONST.N, 16)
  var N_MINUS_2 = BigInt.sub(N, BigInt.str2bigInt('2', 10))

  // to calculate D's for zero-knowledge proofs
  var Q = BigInt.sub(N, BigInt.str2bigInt('1', 10))
  BigInt.divInt_(Q, 2)  // meh

  function SM(reqs) {
    if (!(this instanceof SM)) return new SM(reqs)

    this.version = 1

    this.our_fp = reqs.our_fp
    this.their_fp = reqs.their_fp
    this.ssid = reqs.ssid

    this.debug = !!reqs.debug

    // initial state
    this.init()
  }

  // inherit from EE
  HLP.extend(SM, EventEmitter)

  // set the initial values
  // also used when aborting
  SM.prototype.init = function () {
    this.smpstate = CONST.SMPSTATE_EXPECT1
    this.secret = null
  }

  SM.prototype.makeSecret = function (our, secret) {
    var sha256 = CryptoJS.algo.SHA256.create()
    sha256.update(CryptoJS.enc.Latin1.parse(HLP.packBytes(this.version, 1)))
    sha256.update(CryptoJS.enc.Hex.parse(our ? this.our_fp : this.their_fp))
    sha256.update(CryptoJS.enc.Hex.parse(our ? this.their_fp : this.our_fp))
    sha256.update(CryptoJS.enc.Latin1.parse(this.ssid))
    sha256.update(CryptoJS.enc.Latin1.parse(secret))
    var hash = sha256.finalize()
    this.secret = HLP.bits2bigInt(hash.toString(CryptoJS.enc.Latin1))
  }

  SM.prototype.makeG2s = function () {
    this.a2 = HLP.randomExponent()
    this.a3 = HLP.randomExponent()
    this.g2a = BigInt.powMod(G, this.a2, N)
    this.g3a = BigInt.powMod(G, this.a3, N)
    if ( !HLP.checkGroup(this.g2a, N_MINUS_2) ||
         !HLP.checkGroup(this.g3a, N_MINUS_2)
    ) this.makeG2s()
  }

  SM.prototype.computeGs = function (g2a, g3a) {
    this.g2 = BigInt.powMod(g2a, this.a2, N)
    this.g3 = BigInt.powMod(g3a, this.a3, N)
  }

  SM.prototype.computePQ = function (r) {
    this.p = BigInt.powMod(this.g3, r, N)
    this.q = HLP.multPowMod(G, r, this.g2, this.secret, N)
  }

  SM.prototype.computeR = function () {
    this.r = BigInt.powMod(this.QoQ, this.a3, N)
  }

  SM.prototype.computeRab = function (r) {
    return BigInt.powMod(r, this.a3, N)
  }

  SM.prototype.computeC = function (v, r) {
    return HLP.smpHash(v, BigInt.powMod(G, r, N))
  }

  SM.prototype.computeD = function (r, a, c) {
    return BigInt.subMod(r, BigInt.multMod(a, c, Q), Q)
  }

  // the bulk of the work
  SM.prototype.handleSM = function (msg) {
    var send, r2, r3, r7, t1, t2, t3, t4, rab, tmp2, cR, d7, ms, trust

    var expectStates = {
        2: CONST.SMPSTATE_EXPECT1
      , 3: CONST.SMPSTATE_EXPECT2
      , 4: CONST.SMPSTATE_EXPECT3
      , 5: CONST.SMPSTATE_EXPECT4
      , 7: CONST.SMPSTATE_EXPECT1
    }

    if (msg.type === 6) {
      this.init()
      this.trigger('abort')
      return
    }

    // abort! there was an error
    if (this.smpstate !== expectStates[msg.type])
      return this.abort()

    switch (this.smpstate) {

      case CONST.SMPSTATE_EXPECT1:
        HLP.debug.call(this, 'smp tlv 2')

        // user specified question
        var ind, question
        if (msg.type === 7) {
          ind = msg.msg.indexOf('\x00')
          question = msg.msg.substring(0, ind)
          msg.msg = msg.msg.substring(ind + 1)
        }

        // 0:g2a, 1:c2, 2:d2, 3:g3a, 4:c3, 5:d3
        ms = HLP.readLen(msg.msg.substr(0, 4))
        if (ms !== 6) return this.abort()
        msg = HLP.unpackMPIs(6, msg.msg.substring(4))

        if ( !HLP.checkGroup(msg[0], N_MINUS_2) ||
             !HLP.checkGroup(msg[3], N_MINUS_2)
        ) return this.abort()

        // verify znp's
        if (!HLP.ZKP(1, msg[1], HLP.multPowMod(G, msg[2], msg[0], msg[1], N)))
          return this.abort()

        if (!HLP.ZKP(2, msg[4], HLP.multPowMod(G, msg[5], msg[3], msg[4], N)))
          return this.abort()

        this.g3ao = msg[3]  // save for later

        this.makeG2s()

        // zero-knowledge proof that the exponents
        // associated with g2a & g3a are known
        r2 = HLP.randomExponent()
        r3 = HLP.randomExponent()
        this.c2 = this.computeC(3, r2)
        this.c3 = this.computeC(4, r3)
        this.d2 = this.computeD(r2, this.a2, this.c2)
        this.d3 = this.computeD(r3, this.a3, this.c3)

        this.computeGs(msg[0], msg[3])

        this.smpstate = CONST.SMPSTATE_EXPECT0

        // assume utf8 question
        question = CryptoJS.enc.Latin1
          .parse(question)
          .toString(CryptoJS.enc.Utf8)

        // invoke question
        this.trigger('question', [question])
        return

      case CONST.SMPSTATE_EXPECT2:
        HLP.debug.call(this, 'smp tlv 3')

        // 0:g2a, 1:c2, 2:d2, 3:g3a, 4:c3, 5:d3, 6:p, 7:q, 8:cP, 9:d5, 10:d6
        ms = HLP.readLen(msg.msg.substr(0, 4))
        if (ms !== 11) return this.abort()
        msg = HLP.unpackMPIs(11, msg.msg.substring(4))

        if ( !HLP.checkGroup(msg[0], N_MINUS_2) ||
             !HLP.checkGroup(msg[3], N_MINUS_2) ||
             !HLP.checkGroup(msg[6], N_MINUS_2) ||
             !HLP.checkGroup(msg[7], N_MINUS_2)
        ) return this.abort()

        // verify znp of c3 / c3
        if (!HLP.ZKP(3, msg[1], HLP.multPowMod(G, msg[2], msg[0], msg[1], N)))
          return this.abort()

        if (!HLP.ZKP(4, msg[4], HLP.multPowMod(G, msg[5], msg[3], msg[4], N)))
          return this.abort()

        this.g3ao = msg[3]  // save for later

        this.computeGs(msg[0], msg[3])

        // verify znp of cP
        t1 = HLP.multPowMod(this.g3, msg[9], msg[6], msg[8], N)
        t2 = HLP.multPowMod(G, msg[9], this.g2, msg[10], N)
        t2 = BigInt.multMod(t2, BigInt.powMod(msg[7], msg[8], N), N)

        if (!HLP.ZKP(5, msg[8], t1, t2))
          return this.abort()

        var r4 = HLP.randomExponent()
        this.computePQ(r4)

        // zero-knowledge proof that P & Q
        // were generated according to the protocol
        var r5 = HLP.randomExponent()
        var r6 = HLP.randomExponent()
        var tmp = HLP.multPowMod(G, r5, this.g2, r6, N)
        var cP = HLP.smpHash(6, BigInt.powMod(this.g3, r5, N), tmp)
        var d5 = this.computeD(r5, r4, cP)
        var d6 = this.computeD(r6, this.secret, cP)

        // store these
        this.QoQ = BigInt.divMod(this.q, msg[7], N)
        this.PoP = BigInt.divMod(this.p, msg[6], N)

        this.computeR()

        // zero-knowledge proof that R
        // was generated according to the protocol
        r7 = HLP.randomExponent()
        tmp2 = BigInt.powMod(this.QoQ, r7, N)
        cR = HLP.smpHash(7, BigInt.powMod(G, r7, N), tmp2)
        d7 = this.computeD(r7, this.a3, cR)

        this.smpstate = CONST.SMPSTATE_EXPECT4

        send = HLP.packINT(8) + HLP.packMPIs([
            this.p
          , this.q
          , cP
          , d5
          , d6
          , this.r
          , cR
          , d7
        ])

        // TLV
        send = HLP.packTLV(4, send)
        break

      case CONST.SMPSTATE_EXPECT3:
        HLP.debug.call(this, 'smp tlv 4')

        // 0:p, 1:q, 2:cP, 3:d5, 4:d6, 5:r, 6:cR, 7:d7
        ms = HLP.readLen(msg.msg.substr(0, 4))
        if (ms !== 8) return this.abort()
        msg = HLP.unpackMPIs(8, msg.msg.substring(4))

        if ( !HLP.checkGroup(msg[0], N_MINUS_2) ||
             !HLP.checkGroup(msg[1], N_MINUS_2) ||
             !HLP.checkGroup(msg[5], N_MINUS_2)
        ) return this.abort()

        // verify znp of cP
        t1 = HLP.multPowMod(this.g3, msg[3], msg[0], msg[2], N)
        t2 = HLP.multPowMod(G, msg[3], this.g2, msg[4], N)
        t2 = BigInt.multMod(t2, BigInt.powMod(msg[1], msg[2], N), N)

        if (!HLP.ZKP(6, msg[2], t1, t2))
          return this.abort()

        // verify znp of cR
        t3 = HLP.multPowMod(G, msg[7], this.g3ao, msg[6], N)
        this.QoQ = BigInt.divMod(msg[1], this.q, N)  // save Q over Q
        t4 = HLP.multPowMod(this.QoQ, msg[7], msg[5], msg[6], N)

        if (!HLP.ZKP(7, msg[6], t3, t4))
          return this.abort()

        this.computeR()

        // zero-knowledge proof that R
        // was generated according to the protocol
        r7 = HLP.randomExponent()
        tmp2 = BigInt.powMod(this.QoQ, r7, N)
        cR = HLP.smpHash(8, BigInt.powMod(G, r7, N), tmp2)
        d7 = this.computeD(r7, this.a3, cR)

        send = HLP.packINT(3) + HLP.packMPIs([ this.r, cR, d7 ])
        send = HLP.packTLV(5, send)

        rab = this.computeRab(msg[5])
        trust = !!BigInt.equals(rab, BigInt.divMod(msg[0], this.p, N))

        this.trigger('trust', [trust, 'answered'])
        this.init()
        break

      case CONST.SMPSTATE_EXPECT4:
        HLP.debug.call(this, 'smp tlv 5')

        // 0:r, 1:cR, 2:d7
        ms = HLP.readLen(msg.msg.substr(0, 4))
        if (ms !== 3) return this.abort()
        msg = HLP.unpackMPIs(3, msg.msg.substring(4))

        if (!HLP.checkGroup(msg[0], N_MINUS_2)) return this.abort()

        // verify znp of cR
        t3 = HLP.multPowMod(G, msg[2], this.g3ao, msg[1], N)
        t4 = HLP.multPowMod(this.QoQ, msg[2], msg[0], msg[1], N)
        if (!HLP.ZKP(8, msg[1], t3, t4))
          return this.abort()

        rab = this.computeRab(msg[0])
        trust = !!BigInt.equals(rab, this.PoP)

        this.trigger('trust', [trust, 'asked'])
        this.init()
        return

    }

    this.sendMsg(send)
  }

  // send a message
  SM.prototype.sendMsg = function (send) {
    this.trigger('send', [this.ssid, '\x00' + send])
  }

  SM.prototype.rcvSecret = function (secret, question) {
    HLP.debug.call(this, 'receive secret')

    var fn, our = false
    if (this.smpstate === CONST.SMPSTATE_EXPECT0) {
      fn = this.answer
    } else {
      fn = this.initiate
      our = true
    }

    this.makeSecret(our, secret)
    fn.call(this, question)
  }

  SM.prototype.answer = function () {
    HLP.debug.call(this, 'smp answer')

    var r4 = HLP.randomExponent()
    this.computePQ(r4)

    // zero-knowledge proof that P & Q
    // were generated according to the protocol
    var r5 = HLP.randomExponent()
    var r6 = HLP.randomExponent()
    var tmp = HLP.multPowMod(G, r5, this.g2, r6, N)
    var cP = HLP.smpHash(5, BigInt.powMod(this.g3, r5, N), tmp)
    var d5 = this.computeD(r5, r4, cP)
    var d6 = this.computeD(r6, this.secret, cP)

    this.smpstate = CONST.SMPSTATE_EXPECT3

    var send = HLP.packINT(11) + HLP.packMPIs([
        this.g2a
      , this.c2
      , this.d2
      , this.g3a
      , this.c3
      , this.d3
      , this.p
      , this.q
      , cP
      , d5
      , d6
    ])

    this.sendMsg(HLP.packTLV(3, send))
  }

  SM.prototype.initiate = function (question) {
    HLP.debug.call(this, 'smp initiate')

    if (this.smpstate !== CONST.SMPSTATE_EXPECT1)
      this.abort()  // abort + restart

    this.makeG2s()

    // zero-knowledge proof that the exponents
    // associated with g2a & g3a are known
    var r2 = HLP.randomExponent()
    var r3 = HLP.randomExponent()
    this.c2 = this.computeC(1, r2)
    this.c3 = this.computeC(2, r3)
    this.d2 = this.computeD(r2, this.a2, this.c2)
    this.d3 = this.computeD(r3, this.a3, this.c3)

    // set the next expected state
    this.smpstate = CONST.SMPSTATE_EXPECT2

    var send = ''
    var type = 2

    if (question) {
      send += question
      send += '\x00'
      type = 7
    }

    send += HLP.packINT(6) + HLP.packMPIs([
        this.g2a
      , this.c2
      , this.d2
      , this.g3a
      , this.c3
      , this.d3
    ])

    this.sendMsg(HLP.packTLV(type, send))
  }

  SM.prototype.abort = function () {
    this.init()
    this.sendMsg(HLP.packTLV(6, ''))
    this.trigger('abort')
  }

}).call(this)
;(function () {
  

  var root = this

  var CryptoJS, BigInt, EventEmitter, Worker, SMWPath
    , CONST, HLP, Parse, AKE, SM, DSA
  if (typeof module !== 'undefined' && module.exports) {
    module.exports = OTR
    CryptoJS = require('../vendor/crypto.js')
    BigInt = require('../vendor/bigint.js')
    EventEmitter = require('../vendor/eventemitter.js')
    SMWPath = require('path').join(__dirname, '/sm-webworker.js')
    CONST = require('./const.js')
    HLP = require('./helpers.js')
    Parse = require('./parse.js')
    AKE = require('./ake.js')
    SM = require('./sm.js')
    DSA = require('./dsa.js')
    // expose CONST for consistency with docs
    OTR.CONST = CONST
  } else {
    // copy over and expose internals
    Object.keys(root.OTR).forEach(function (k) {
      OTR[k] = root.OTR[k]
    })
    root.OTR = OTR
    CryptoJS = root.CryptoJS
    BigInt = root.BigInt
    EventEmitter = root.EventEmitter
    Worker = root.Worker
    SMWPath = 'sm-webworker.js'
    CONST = OTR.CONST
    HLP = OTR.HLP
    Parse = OTR.Parse
    AKE = OTR.AKE
    SM = OTR.SM
    DSA = root.DSA
  }

  // diffie-hellman modulus and generator
  // see group 5, RFC 3526
  var G = BigInt.str2bigInt(CONST.G, 10)
  var N = BigInt.str2bigInt(CONST.N, 16)

  // JavaScript integers
  var MAX_INT = Math.pow(2, 53) - 1  // doubles
  var MAX_UINT = Math.pow(2, 31) - 1  // bitwise operators

  // OTR contructor
  function OTR(options) {
    if (!(this instanceof OTR)) return new OTR(options)

    // options
    options = options || {}

    // private keys
    if (options.priv && !(options.priv instanceof DSA))
      throw new Error('Requires long-lived DSA key.')

    this.priv = options.priv ? options.priv : new DSA()

    this.fragment_size = options.fragment_size || 0
    if (this.fragment_size < 0)
      throw new Error('Fragment size must be a positive integer.')

    this.send_interval = options.send_interval || 0
    if (this.send_interval < 0)
      throw new Error('Send interval must be a positive integer.')

    this.outgoing = []

    // instance tag
    this.our_instance_tag = options.instance_tag || OTR.makeInstanceTag()

    // debug
    this.debug = !!options.debug

    // smp in webworker options
    // this is still experimental and undocumented
    this.smw = options.smw

    // init vals
    this.init()

    // bind methods
    var self = this
    ;['sendMsg', 'receiveMsg'].forEach(function (meth) {
      self[meth] = self[meth].bind(self)
    })

    EventEmitter.call(this)
  }

  // inherit from EE
  HLP.extend(OTR, EventEmitter)

  // add to prototype
  OTR.prototype.init = function () {

    this.msgstate = CONST.MSGSTATE_PLAINTEXT
    this.authstate = CONST.AUTHSTATE_NONE

    this.ALLOW_V2 = true
    this.ALLOW_V3 = true

    this.REQUIRE_ENCRYPTION = false
    this.SEND_WHITESPACE_TAG = false
    this.WHITESPACE_START_AKE = false
    this.ERROR_START_AKE = false

    Parse.initFragment(this)

    // their keys
    this.their_y = null
    this.their_old_y = null
    this.their_keyid = 0
    this.their_priv_pk = null
    this.their_instance_tag = '\x00\x00\x00\x00'

    // our keys
    this.our_dh = this.dh()
    this.our_old_dh = this.dh()
    this.our_keyid = 2

    // session keys
    this.sessKeys = [ new Array(2), new Array(2) ]

    // saved
    this.storedMgs = []
    this.oldMacKeys = []

    // smp
    this.sm = null  // initialized after AKE

    // when ake is complete
    // save their keys and the session
    this._akeInit()

    // receive plaintext message since switching to plaintext
    // used to decide when to stop sending pt tags when SEND_WHITESPACE_TAG
    this.receivedPlaintext = false

  }

  OTR.prototype._akeInit = function () {
    this.ake = new AKE(this)
    this.transmittedRS = false
    this.ssid = null
  }

  // smp over webworker
  OTR.prototype._SMW = function (otr, reqs) {
    this.otr = otr
    var opts = {
        path: SMWPath
      , seed: BigInt.getSeed
    }
    if (typeof otr.smw === 'object')
      Object.keys(otr.smw).forEach(function (k) {
        opts[k] = otr.smw[k]
      })

    // load optional dep. in node
    if (typeof module !== 'undefined' && module.exports)
      Worker = require('webworker-threads').Worker

    this.worker = new Worker(opts.path)
    var self = this
    this.worker.onmessage = function (e) {
      var d = e.data
      if (!d) return
      self.trigger(d.method, d.args)
    }
    this.worker.postMessage({
        type: 'seed'
      , seed: opts.seed()
      , imports: opts.imports
    })
    this.worker.postMessage({
        type: 'init'
      , reqs: reqs
    })
  }

  // inherit from EE
  HLP.extend(OTR.prototype._SMW, EventEmitter)

  // shim sm methods
  ;['handleSM', 'rcvSecret', 'abort'].forEach(function (m) {
    OTR.prototype._SMW.prototype[m] = function () {
      this.worker.postMessage({
          type: 'method'
        , method: m
        , args: Array.prototype.slice.call(arguments, 0)
      })
    }
  })

  OTR.prototype._smInit = function () {
    var reqs = {
        ssid: this.ssid
      , our_fp: this.priv.fingerprint()
      , their_fp: this.their_priv_pk.fingerprint()
      , debug: this.debug
    }
    if (this.smw) {
      if (this.sm) this.sm.worker.terminate()  // destroy prev webworker
      this.sm = new this._SMW(this, reqs)
    } else {
      this.sm = new SM(reqs)
    }
    var self = this
    ;['trust', 'abort', 'question'].forEach(function (e) {
      self.sm.on(e, function () {
        self.trigger('smp', [e].concat(Array.prototype.slice.call(arguments)))
      })
    })
    this.sm.on('send', function (ssid, send) {
      if (self.ssid === ssid) {
        send = self.prepareMsg(send)
        self.io(send)
      }
    })
  }

  OTR.prototype.io = function (msg, meta) {

    // buffer
    msg = ([].concat(msg)).map(function(m){
       return { msg: m, meta: meta }
    })
    this.outgoing = this.outgoing.concat(msg)

    var self = this
    ;(function send(first) {
      if (!first) {
        if (!self.outgoing.length) return
        var elem = self.outgoing.shift()
        self.trigger('io', [elem.msg, elem.meta])
      }
      setTimeout(send, first ? 0 : self.send_interval)
    }(true))

  }

  OTR.prototype.dh = function dh() {
    var keys = { privateKey: BigInt.randBigInt(320) }
    keys.publicKey = BigInt.powMod(G, keys.privateKey, N)
    return keys
  }

  // session constructor
  OTR.prototype.DHSession = function DHSession(our_dh, their_y) {
    if (!(this instanceof DHSession)) return new DHSession(our_dh, their_y)

    // shared secret
    var s = BigInt.powMod(their_y, our_dh.privateKey, N)
    var secbytes = HLP.packMPI(s)

    // session id
    this.id = HLP.mask(HLP.h2('\x00', secbytes), 0, 64)  // first 64-bits

    // are we the high or low end of the connection?
    var sq = BigInt.greater(our_dh.publicKey, their_y)
    var sendbyte = sq ? '\x01' : '\x02'
    var rcvbyte  = sq ? '\x02' : '\x01'

    // sending and receiving keys
    this.sendenc = HLP.mask(HLP.h1(sendbyte, secbytes), 0, 128)  // f16 bytes
    this.sendmac = CryptoJS.SHA1(CryptoJS.enc.Latin1.parse(this.sendenc))
    this.sendmac = this.sendmac.toString(CryptoJS.enc.Latin1)

    this.rcvenc = HLP.mask(HLP.h1(rcvbyte, secbytes), 0, 128)
    this.rcvmac = CryptoJS.SHA1(CryptoJS.enc.Latin1.parse(this.rcvenc))
    this.rcvmac = this.rcvmac.toString(CryptoJS.enc.Latin1)
    this.rcvmacused = false

    // extra symmetric key
    this.extra_symkey = HLP.h2('\xff', secbytes)

    // counters
    this.send_counter = 0
    this.rcv_counter = 0
  }

  OTR.prototype.rotateOurKeys = function () {

    // reveal old mac keys
    var self = this
    this.sessKeys[1].forEach(function (sk) {
      if (sk && sk.rcvmacused) self.oldMacKeys.push(sk.rcvmac)
    })

    // rotate our keys
    this.our_old_dh = this.our_dh
    this.our_dh = this.dh()
    this.our_keyid += 1

    this.sessKeys[1][0] = this.sessKeys[0][0]
    this.sessKeys[1][1] = this.sessKeys[0][1]
    this.sessKeys[0] = [
        this.their_y ?
            new this.DHSession(this.our_dh, this.their_y) : null
      , this.their_old_y ?
            new this.DHSession(this.our_dh, this.their_old_y) : null
    ]

  }

  OTR.prototype.rotateTheirKeys = function (their_y) {

    // increment their keyid
    this.their_keyid += 1

    // reveal old mac keys
    var self = this
    this.sessKeys.forEach(function (sk) {
      if (sk[1] && sk[1].rcvmacused) self.oldMacKeys.push(sk[1].rcvmac)
    })

    // rotate their keys / session
    this.their_old_y = this.their_y
    this.sessKeys[0][1] = this.sessKeys[0][0]
    this.sessKeys[1][1] = this.sessKeys[1][0]

    // new keys / sessions
    this.their_y = their_y
    this.sessKeys[0][0] = new this.DHSession(this.our_dh, this.their_y)
    this.sessKeys[1][0] = new this.DHSession(this.our_old_dh, this.their_y)

  }

  OTR.prototype.prepareMsg = function (msg, esk) {
    if (this.msgstate !== CONST.MSGSTATE_ENCRYPTED || this.their_keyid === 0)
      return this.error('Not ready to encrypt.')

    var sessKeys = this.sessKeys[1][0]

    if (sessKeys.send_counter >= MAX_INT)
      return this.error('Should have rekeyed by now.')

    sessKeys.send_counter += 1

    var ctr = HLP.packCtr(sessKeys.send_counter)

    var send = this.ake.otr_version + '\x03'  // version and type
    var v3 = (this.ake.otr_version === CONST.OTR_VERSION_3)

    if (v3) {
      send += this.our_instance_tag
      send += this.their_instance_tag
    }

    send += '\x00'  // flag
    send += HLP.packINT(this.our_keyid - 1)
    send += HLP.packINT(this.their_keyid)
    send += HLP.packMPI(this.our_dh.publicKey)
    send += ctr.substring(0, 8)

    if (Math.ceil(msg.length / 8) >= MAX_UINT)  // * 16 / 128
      return this.error('Message is too long.')

    var aes = HLP.encryptAes(
        CryptoJS.enc.Latin1.parse(msg)
      , sessKeys.sendenc
      , ctr
    )

    send += HLP.packData(aes)
    send += HLP.make1Mac(send, sessKeys.sendmac)
    send += HLP.packData(this.oldMacKeys.splice(0).join(''))

    send = HLP.wrapMsg(
        send
      , this.fragment_size
      , v3
      , this.our_instance_tag
      , this.their_instance_tag
    )
    if (send[0]) return this.error(send[0])

    // emit extra symmetric key
    if (esk) this.trigger('file', ['send', sessKeys.extra_symkey, esk])

    return send[1]
  }

  OTR.prototype.handleDataMsg = function (msg) {
    var vt = msg.version + msg.type

    if (this.ake.otr_version === CONST.OTR_VERSION_3)
      vt += msg.instance_tags

    var types = ['BYTE', 'INT', 'INT', 'MPI', 'CTR', 'DATA', 'MAC', 'DATA']
    msg = HLP.splitype(types, msg.msg)

    // ignore flag
    var ign = (msg[0] === '\x01')

    if (this.msgstate !== CONST.MSGSTATE_ENCRYPTED || msg.length !== 8) {
      if (!ign) this.error('Received an unreadable encrypted message.', true)
      return
    }

    var our_keyid = this.our_keyid - HLP.readLen(msg[2])
    var their_keyid = this.their_keyid - HLP.readLen(msg[1])

    if (our_keyid < 0 || our_keyid > 1) {
      if (!ign) this.error('Not of our latest keys.', true)
      return
    }

    if (their_keyid < 0 || their_keyid > 1) {
      if (!ign) this.error('Not of your latest keys.', true)
      return
    }

    var their_y = their_keyid ? this.their_old_y : this.their_y

    if (their_keyid === 1 && !their_y) {
      if (!ign) this.error('Do not have that key.')
      return
    }

    var sessKeys = this.sessKeys[our_keyid][their_keyid]

    var ctr = HLP.unpackCtr(msg[4])
    if (ctr <= sessKeys.rcv_counter) {
      if (!ign) this.error('Counter in message is not larger.')
      return
    }
    sessKeys.rcv_counter = ctr

    // verify mac
    vt += msg.slice(0, 6).join('')
    var vmac = HLP.make1Mac(vt, sessKeys.rcvmac)

    if (!HLP.compare(msg[6], vmac)) {
      if (!ign) this.error('MACs do not match.')
      return
    }
    sessKeys.rcvmacused = true

    var out = HLP.decryptAes(
        msg[5].substring(4)
      , sessKeys.rcvenc
      , HLP.padCtr(msg[4])
    )
    out = out.toString(CryptoJS.enc.Latin1)

    if (!our_keyid) this.rotateOurKeys()
    if (!their_keyid) this.rotateTheirKeys(HLP.readMPI(msg[3]))

    // parse TLVs
    var ind = out.indexOf('\x00')
    if (~ind) {
      this.handleTLVs(out.substring(ind + 1), sessKeys)
      out = out.substring(0, ind)
    }

    out = CryptoJS.enc.Latin1.parse(out)
    return out.toString(CryptoJS.enc.Utf8)
  }

  OTR.prototype.handleTLVs = function (tlvs, sessKeys) {
    var type, len, msg
    for (; tlvs.length; ) {
      type = HLP.unpackSHORT(tlvs.substr(0, 2))
      len = HLP.unpackSHORT(tlvs.substr(2, 2))

      msg = tlvs.substr(4, len)

      // TODO: handle pathological cases better
      if (msg.length < len) break

      switch (type) {
        case 1:
          // Disconnected
          this.msgstate = CONST.MSGSTATE_FINISHED
          this.trigger('status', [CONST.STATUS_END_OTR])
          break
        case 2: case 3: case 4:
        case 5: case 6: case 7:
          // SMP
          if (this.msgstate !== CONST.MSGSTATE_ENCRYPTED) {
            if (this.sm) this.sm.abort()
            return
          }
          if (!this.sm) this._smInit()
          this.sm.handleSM({ msg: msg, type: type })
          break
        case 8:
          // utf8 filenames
          msg = msg.substring(4) // remove 4-byte indication
          msg = CryptoJS.enc.Latin1.parse(msg)
          msg = msg.toString(CryptoJS.enc.Utf8)

          // Extra Symkey
          this.trigger('file', ['receive', sessKeys.extra_symkey, msg])
          break
      }

      tlvs = tlvs.substring(4 + len)
    }
  }

  OTR.prototype.smpSecret = function (secret, question) {
    if (this.msgstate !== CONST.MSGSTATE_ENCRYPTED)
      return this.error('Must be encrypted for SMP.')

    if (typeof secret !== 'string' || secret.length < 1)
      return this.error('Secret is required.')

    if (!this.sm) this._smInit()

    // utf8 inputs
    secret = CryptoJS.enc.Utf8.parse(secret).toString(CryptoJS.enc.Latin1)
    question = CryptoJS.enc.Utf8.parse(question).toString(CryptoJS.enc.Latin1)

    this.sm.rcvSecret(secret, question)
  }

  OTR.prototype.sendQueryMsg = function () {
    var versions = {}
      , msg = CONST.OTR_TAG

    if (this.ALLOW_V2) versions['2'] = true
    if (this.ALLOW_V3) versions['3'] = true

    // but we don't allow v1
    // if (versions['1']) msg += '?'

    var vs = Object.keys(versions)
    if (vs.length) {
      msg += 'v'
      vs.forEach(function (v) {
        if (v !== '1') msg += v
      })
      msg += '?'
    }

    this.io(msg)
    this.trigger('status', [CONST.STATUS_SEND_QUERY])
  }

  OTR.prototype.sendMsg = function (msg, meta) {
    if ( this.REQUIRE_ENCRYPTION ||
         this.msgstate !== CONST.MSGSTATE_PLAINTEXT
    ) {
      msg = CryptoJS.enc.Utf8.parse(msg)
      msg = msg.toString(CryptoJS.enc.Latin1)
    }

    switch (this.msgstate) {
      case CONST.MSGSTATE_PLAINTEXT:
        if (this.REQUIRE_ENCRYPTION) {
          this.storedMgs.push({msg: msg, meta: meta})
          this.sendQueryMsg()
          return
        }
        if (this.SEND_WHITESPACE_TAG && !this.receivedPlaintext) {
          msg += CONST.WHITESPACE_TAG  // 16 byte tag
          if (this.ALLOW_V3) msg += CONST.WHITESPACE_TAG_V3
          if (this.ALLOW_V2) msg += CONST.WHITESPACE_TAG_V2
        }
        break
      case CONST.MSGSTATE_FINISHED:
        this.storedMgs.push({msg: msg, meta: meta})
        this.error('Message cannot be sent at this time.')
        return
      case CONST.MSGSTATE_ENCRYPTED:
        msg = this.prepareMsg(msg)
        break
      default:
        throw new Error('Unknown message state.')
    }

    if (msg) this.io(msg, meta)
  }

  OTR.prototype.receiveMsg = function (msg) {

    // parse type
    msg = Parse.parseMsg(this, msg)

    if (!msg) return

    switch (msg.cls) {
      case 'error':
        this.error(msg.msg)
        return
      case 'ake':
        if ( msg.version === CONST.OTR_VERSION_3 &&
          this.checkInstanceTags(msg.instance_tags)
        ) return  // ignore
        this.ake.handleAKE(msg)
        return
      case 'data':
        if ( msg.version === CONST.OTR_VERSION_3 &&
          this.checkInstanceTags(msg.instance_tags)
        ) return  // ignore
        msg.msg = this.handleDataMsg(msg)
        msg.encrypted = true
        break
      case 'query':
        if (this.msgstate === CONST.MSGSTATE_ENCRYPTED) this._akeInit()
        this.doAKE(msg)
        break
      default:
        // check for encrypted
        if ( this.REQUIRE_ENCRYPTION ||
             this.msgstate !== CONST.MSGSTATE_PLAINTEXT
        ) this.error('Received an unencrypted message.')

        // received a plaintext message
        // stop sending the whitespace tag
        this.receivedPlaintext = true

        // received a whitespace tag
        if (this.WHITESPACE_START_AKE && msg.ver.length > 0)
          this.doAKE(msg)
    }

    if (msg.msg) this.trigger('ui', [msg.msg, !!msg.encrypted])
  }

  OTR.prototype.checkInstanceTags = function (it) {
    var their_it = HLP.readLen(it.substr(0, 4))
    var our_it = HLP.readLen(it.substr(4, 4))

    if (our_it && our_it !== HLP.readLen(this.our_instance_tag))
      return true

    if (HLP.readLen(this.their_instance_tag)) {
      if (HLP.readLen(this.their_instance_tag) !== their_it) return true
    } else {
      if (their_it < 100) return true
      this.their_instance_tag = HLP.packINT(their_it)
    }
  }

  OTR.prototype.doAKE = function (msg) {
    if (this.ALLOW_V3 && ~msg.ver.indexOf(CONST.OTR_VERSION_3)) {
      this.ake.initiateAKE(CONST.OTR_VERSION_3)
    } else if (this.ALLOW_V2 && ~msg.ver.indexOf(CONST.OTR_VERSION_2)) {
      this.ake.initiateAKE(CONST.OTR_VERSION_2)
    } else {
      // is this an error?
      this.error('OTR conversation requested, ' +
        'but no compatible protocol version found.')
    }
  }

  OTR.prototype.error = function (err, send) {
    if (send) {
      if (!this.debug) err = "An OTR error has occurred."
      err = '?OTR Error:' + err
      this.io(err)
      return
    }
    this.trigger('error', [err])
  }

  OTR.prototype.sendStored = function () {
    var self = this
    ;(this.storedMgs.splice(0)).forEach(function (elem) {
      var msg = self.prepareMsg(elem.msg)
      self.io(msg, elem.meta)
    })
  }

  OTR.prototype.sendFile = function (filename) {
    if (this.msgstate !== CONST.MSGSTATE_ENCRYPTED)
      return this.error('Not ready to encrypt.')

    if (this.ake.otr_version !== CONST.OTR_VERSION_3)
      return this.error('Protocol v3 required.')

    if (!filename) return this.error('Please specify a filename.')

    // utf8 filenames
    var l1name = CryptoJS.enc.Utf8.parse(filename)
    l1name = l1name.toString(CryptoJS.enc.Latin1)

    if (l1name.length >= 65532) return this.error('filename is too long.')

    var msg = '\x00'  // null byte
    msg += '\x00\x08'  // type 8 tlv
    msg += HLP.packSHORT(4 + l1name.length)  // length of value
    msg += '\x00\x00\x00\x01'  // four bytes indicating file
    msg += l1name

    msg = this.prepareMsg(msg, filename)
    this.io(msg)
  }

  OTR.prototype.endOtr = function () {
    if (this.msgstate === CONST.MSGSTATE_ENCRYPTED) {
      this.sendMsg('\x00\x00\x01\x00\x00')
      if (this.sm) {
        if (this.smw) this.sm.worker.terminate()  // destroy webworker
        this.sm = null
      }
    }
    this.msgstate = CONST.MSGSTATE_PLAINTEXT
    this.receivedPlaintext = false
    this.trigger('status', [CONST.STATUS_END_OTR])
  }

  // attach methods

  OTR.makeInstanceTag = function () {
    var num = BigInt.randBigInt(32)
    if (BigInt.greater(BigInt.str2bigInt('100', 16), num))
      return OTR.makeInstanceTag()
    return HLP.packINT(parseInt(BigInt.bigInt2str(num, 10), 10))
  }

}).call(this)


  return {
      OTR: this.OTR
    , DSA: this.DSA
  }

}))
;
//! moment.js
//! version : 2.6.0
//! authors : Tim Wood, Iskren Chernev, Moment.js contributors
//! license : MIT
//! momentjs.com

(function (undefined) {

    /************************************
        Constants
    ************************************/

    var moment,
        VERSION = "2.6.0",
        // the global-scope this is NOT the global object in Node.js
        globalScope = typeof global !== 'undefined' ? global : this,
        oldGlobalMoment,
        round = Math.round,
        i,

        YEAR = 0,
        MONTH = 1,
        DATE = 2,
        HOUR = 3,
        MINUTE = 4,
        SECOND = 5,
        MILLISECOND = 6,

        // internal storage for language config files
        languages = {},

        // moment internal properties
        momentProperties = {
            _isAMomentObject: null,
            _i : null,
            _f : null,
            _l : null,
            _strict : null,
            _isUTC : null,
            _offset : null,  // optional. Combine with _isUTC
            _pf : null,
            _lang : null  // optional
        },

        // check for nodeJS
        hasModule = (typeof module !== 'undefined' && module.exports),

        // ASP.NET json date format regex
        aspNetJsonRegex = /^\/?Date\((\-?\d+)/i,
        aspNetTimeSpanJsonRegex = /(\-)?(?:(\d*)\.)?(\d+)\:(\d+)(?:\:(\d+)\.?(\d{3})?)?/,

        // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
        // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
        isoDurationRegex = /^(-)?P(?:(?:([0-9,.]*)Y)?(?:([0-9,.]*)M)?(?:([0-9,.]*)D)?(?:T(?:([0-9,.]*)H)?(?:([0-9,.]*)M)?(?:([0-9,.]*)S)?)?|([0-9,.]*)W)$/,

        // format tokens
        formattingTokens = /(\[[^\[]*\])|(\\)?(Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Q|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|mm?|ss?|S{1,4}|X|zz?|ZZ?|.)/g,
        localFormattingTokens = /(\[[^\[]*\])|(\\)?(LT|LL?L?L?|l{1,4})/g,

        // parsing token regexes
        parseTokenOneOrTwoDigits = /\d\d?/, // 0 - 99
        parseTokenOneToThreeDigits = /\d{1,3}/, // 0 - 999
        parseTokenOneToFourDigits = /\d{1,4}/, // 0 - 9999
        parseTokenOneToSixDigits = /[+\-]?\d{1,6}/, // -999,999 - 999,999
        parseTokenDigits = /\d+/, // nonzero number of digits
        parseTokenWord = /[0-9]*['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+|[\u0600-\u06FF\/]+(\s*?[\u0600-\u06FF]+){1,2}/i, // any word (or two) characters or numbers including two/three word month in arabic.
        parseTokenTimezone = /Z|[\+\-]\d\d:?\d\d/gi, // +00:00 -00:00 +0000 -0000 or Z
        parseTokenT = /T/i, // T (ISO separator)
        parseTokenTimestampMs = /[\+\-]?\d+(\.\d{1,3})?/, // 123456789 123456789.123
        parseTokenOrdinal = /\d{1,2}/,

        //strict parsing regexes
        parseTokenOneDigit = /\d/, // 0 - 9
        parseTokenTwoDigits = /\d\d/, // 00 - 99
        parseTokenThreeDigits = /\d{3}/, // 000 - 999
        parseTokenFourDigits = /\d{4}/, // 0000 - 9999
        parseTokenSixDigits = /[+-]?\d{6}/, // -999,999 - 999,999
        parseTokenSignedNumber = /[+-]?\d+/, // -inf - inf

        // iso 8601 regex
        // 0000-00-00 0000-W00 or 0000-W00-0 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000 or +00)
        isoRegex = /^\s*(?:[+-]\d{6}|\d{4})-(?:(\d\d-\d\d)|(W\d\d$)|(W\d\d-\d)|(\d\d\d))((T| )(\d\d(:\d\d(:\d\d(\.\d+)?)?)?)?([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?$/,

        isoFormat = 'YYYY-MM-DDTHH:mm:ssZ',

        isoDates = [
            ['YYYYYY-MM-DD', /[+-]\d{6}-\d{2}-\d{2}/],
            ['YYYY-MM-DD', /\d{4}-\d{2}-\d{2}/],
            ['GGGG-[W]WW-E', /\d{4}-W\d{2}-\d/],
            ['GGGG-[W]WW', /\d{4}-W\d{2}/],
            ['YYYY-DDD', /\d{4}-\d{3}/]
        ],

        // iso time formats and regexes
        isoTimes = [
            ['HH:mm:ss.SSSS', /(T| )\d\d:\d\d:\d\d\.\d+/],
            ['HH:mm:ss', /(T| )\d\d:\d\d:\d\d/],
            ['HH:mm', /(T| )\d\d:\d\d/],
            ['HH', /(T| )\d\d/]
        ],

        // timezone chunker "+10:00" > ["10", "00"] or "-1530" > ["-15", "30"]
        parseTimezoneChunker = /([\+\-]|\d\d)/gi,

        // getter and setter names
        proxyGettersAndSetters = 'Date|Hours|Minutes|Seconds|Milliseconds'.split('|'),
        unitMillisecondFactors = {
            'Milliseconds' : 1,
            'Seconds' : 1e3,
            'Minutes' : 6e4,
            'Hours' : 36e5,
            'Days' : 864e5,
            'Months' : 2592e6,
            'Years' : 31536e6
        },

        unitAliases = {
            ms : 'millisecond',
            s : 'second',
            m : 'minute',
            h : 'hour',
            d : 'day',
            D : 'date',
            w : 'week',
            W : 'isoWeek',
            M : 'month',
            Q : 'quarter',
            y : 'year',
            DDD : 'dayOfYear',
            e : 'weekday',
            E : 'isoWeekday',
            gg: 'weekYear',
            GG: 'isoWeekYear'
        },

        camelFunctions = {
            dayofyear : 'dayOfYear',
            isoweekday : 'isoWeekday',
            isoweek : 'isoWeek',
            weekyear : 'weekYear',
            isoweekyear : 'isoWeekYear'
        },

        // format function strings
        formatFunctions = {},

        // tokens to ordinalize and pad
        ordinalizeTokens = 'DDD w W M D d'.split(' '),
        paddedTokens = 'M D H h m s w W'.split(' '),

        formatTokenFunctions = {
            M    : function () {
                return this.month() + 1;
            },
            MMM  : function (format) {
                return this.lang().monthsShort(this, format);
            },
            MMMM : function (format) {
                return this.lang().months(this, format);
            },
            D    : function () {
                return this.date();
            },
            DDD  : function () {
                return this.dayOfYear();
            },
            d    : function () {
                return this.day();
            },
            dd   : function (format) {
                return this.lang().weekdaysMin(this, format);
            },
            ddd  : function (format) {
                return this.lang().weekdaysShort(this, format);
            },
            dddd : function (format) {
                return this.lang().weekdays(this, format);
            },
            w    : function () {
                return this.week();
            },
            W    : function () {
                return this.isoWeek();
            },
            YY   : function () {
                return leftZeroFill(this.year() % 100, 2);
            },
            YYYY : function () {
                return leftZeroFill(this.year(), 4);
            },
            YYYYY : function () {
                return leftZeroFill(this.year(), 5);
            },
            YYYYYY : function () {
                var y = this.year(), sign = y >= 0 ? '+' : '-';
                return sign + leftZeroFill(Math.abs(y), 6);
            },
            gg   : function () {
                return leftZeroFill(this.weekYear() % 100, 2);
            },
            gggg : function () {
                return leftZeroFill(this.weekYear(), 4);
            },
            ggggg : function () {
                return leftZeroFill(this.weekYear(), 5);
            },
            GG   : function () {
                return leftZeroFill(this.isoWeekYear() % 100, 2);
            },
            GGGG : function () {
                return leftZeroFill(this.isoWeekYear(), 4);
            },
            GGGGG : function () {
                return leftZeroFill(this.isoWeekYear(), 5);
            },
            e : function () {
                return this.weekday();
            },
            E : function () {
                return this.isoWeekday();
            },
            a    : function () {
                return this.lang().meridiem(this.hours(), this.minutes(), true);
            },
            A    : function () {
                return this.lang().meridiem(this.hours(), this.minutes(), false);
            },
            H    : function () {
                return this.hours();
            },
            h    : function () {
                return this.hours() % 12 || 12;
            },
            m    : function () {
                return this.minutes();
            },
            s    : function () {
                return this.seconds();
            },
            S    : function () {
                return toInt(this.milliseconds() / 100);
            },
            SS   : function () {
                return leftZeroFill(toInt(this.milliseconds() / 10), 2);
            },
            SSS  : function () {
                return leftZeroFill(this.milliseconds(), 3);
            },
            SSSS : function () {
                return leftZeroFill(this.milliseconds(), 3);
            },
            Z    : function () {
                var a = -this.zone(),
                    b = "+";
                if (a < 0) {
                    a = -a;
                    b = "-";
                }
                return b + leftZeroFill(toInt(a / 60), 2) + ":" + leftZeroFill(toInt(a) % 60, 2);
            },
            ZZ   : function () {
                var a = -this.zone(),
                    b = "+";
                if (a < 0) {
                    a = -a;
                    b = "-";
                }
                return b + leftZeroFill(toInt(a / 60), 2) + leftZeroFill(toInt(a) % 60, 2);
            },
            z : function () {
                return this.zoneAbbr();
            },
            zz : function () {
                return this.zoneName();
            },
            X    : function () {
                return this.unix();
            },
            Q : function () {
                return this.quarter();
            }
        },

        lists = ['months', 'monthsShort', 'weekdays', 'weekdaysShort', 'weekdaysMin'];

    function defaultParsingFlags() {
        // We need to deep clone this object, and es5 standard is not very
        // helpful.
        return {
            empty : false,
            unusedTokens : [],
            unusedInput : [],
            overflow : -2,
            charsLeftOver : 0,
            nullInput : false,
            invalidMonth : null,
            invalidFormat : false,
            userInvalidated : false,
            iso: false
        };
    }

    function deprecate(msg, fn) {
        var firstTime = true;
        function printMsg() {
            if (moment.suppressDeprecationWarnings === false &&
                    typeof console !== 'undefined' && console.warn) {
                console.warn("Deprecation warning: " + msg);
            }
        }
        return extend(function () {
            if (firstTime) {
                printMsg();
                firstTime = false;
            }
            return fn.apply(this, arguments);
        }, fn);
    }

    function padToken(func, count) {
        return function (a) {
            return leftZeroFill(func.call(this, a), count);
        };
    }
    function ordinalizeToken(func, period) {
        return function (a) {
            return this.lang().ordinal(func.call(this, a), period);
        };
    }

    while (ordinalizeTokens.length) {
        i = ordinalizeTokens.pop();
        formatTokenFunctions[i + 'o'] = ordinalizeToken(formatTokenFunctions[i], i);
    }
    while (paddedTokens.length) {
        i = paddedTokens.pop();
        formatTokenFunctions[i + i] = padToken(formatTokenFunctions[i], 2);
    }
    formatTokenFunctions.DDDD = padToken(formatTokenFunctions.DDD, 3);


    /************************************
        Constructors
    ************************************/

    function Language() {

    }

    // Moment prototype object
    function Moment(config) {
        checkOverflow(config);
        extend(this, config);
    }

    // Duration Constructor
    function Duration(duration) {
        var normalizedInput = normalizeObjectUnits(duration),
            years = normalizedInput.year || 0,
            quarters = normalizedInput.quarter || 0,
            months = normalizedInput.month || 0,
            weeks = normalizedInput.week || 0,
            days = normalizedInput.day || 0,
            hours = normalizedInput.hour || 0,
            minutes = normalizedInput.minute || 0,
            seconds = normalizedInput.second || 0,
            milliseconds = normalizedInput.millisecond || 0;

        // representation for dateAddRemove
        this._milliseconds = +milliseconds +
            seconds * 1e3 + // 1000
            minutes * 6e4 + // 1000 * 60
            hours * 36e5; // 1000 * 60 * 60
        // Because of dateAddRemove treats 24 hours as different from a
        // day when working around DST, we need to store them separately
        this._days = +days +
            weeks * 7;
        // It is impossible translate months into days without knowing
        // which months you are are talking about, so we have to store
        // it separately.
        this._months = +months +
            quarters * 3 +
            years * 12;

        this._data = {};

        this._bubble();
    }

    /************************************
        Helpers
    ************************************/


    function extend(a, b) {
        for (var i in b) {
            if (b.hasOwnProperty(i)) {
                a[i] = b[i];
            }
        }

        if (b.hasOwnProperty("toString")) {
            a.toString = b.toString;
        }

        if (b.hasOwnProperty("valueOf")) {
            a.valueOf = b.valueOf;
        }

        return a;
    }

    function cloneMoment(m) {
        var result = {}, i;
        for (i in m) {
            if (m.hasOwnProperty(i) && momentProperties.hasOwnProperty(i)) {
                result[i] = m[i];
            }
        }

        return result;
    }

    function absRound(number) {
        if (number < 0) {
            return Math.ceil(number);
        } else {
            return Math.floor(number);
        }
    }

    // left zero fill a number
    // see http://jsperf.com/left-zero-filling for performance comparison
    function leftZeroFill(number, targetLength, forceSign) {
        var output = '' + Math.abs(number),
            sign = number >= 0;

        while (output.length < targetLength) {
            output = '0' + output;
        }
        return (sign ? (forceSign ? '+' : '') : '-') + output;
    }

    // helper function for _.addTime and _.subtractTime
    function addOrSubtractDurationFromMoment(mom, duration, isAdding, updateOffset) {
        var milliseconds = duration._milliseconds,
            days = duration._days,
            months = duration._months;
        updateOffset = updateOffset == null ? true : updateOffset;

        if (milliseconds) {
            mom._d.setTime(+mom._d + milliseconds * isAdding);
        }
        if (days) {
            rawSetter(mom, 'Date', rawGetter(mom, 'Date') + days * isAdding);
        }
        if (months) {
            rawMonthSetter(mom, rawGetter(mom, 'Month') + months * isAdding);
        }
        if (updateOffset) {
            moment.updateOffset(mom, days || months);
        }
    }

    // check if is an array
    function isArray(input) {
        return Object.prototype.toString.call(input) === '[object Array]';
    }

    function isDate(input) {
        return  Object.prototype.toString.call(input) === '[object Date]' ||
                input instanceof Date;
    }

    // compare two arrays, return the number of differences
    function compareArrays(array1, array2, dontConvert) {
        var len = Math.min(array1.length, array2.length),
            lengthDiff = Math.abs(array1.length - array2.length),
            diffs = 0,
            i;
        for (i = 0; i < len; i++) {
            if ((dontConvert && array1[i] !== array2[i]) ||
                (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))) {
                diffs++;
            }
        }
        return diffs + lengthDiff;
    }

    function normalizeUnits(units) {
        if (units) {
            var lowered = units.toLowerCase().replace(/(.)s$/, '$1');
            units = unitAliases[units] || camelFunctions[lowered] || lowered;
        }
        return units;
    }

    function normalizeObjectUnits(inputObject) {
        var normalizedInput = {},
            normalizedProp,
            prop;

        for (prop in inputObject) {
            if (inputObject.hasOwnProperty(prop)) {
                normalizedProp = normalizeUnits(prop);
                if (normalizedProp) {
                    normalizedInput[normalizedProp] = inputObject[prop];
                }
            }
        }

        return normalizedInput;
    }

    function makeList(field) {
        var count, setter;

        if (field.indexOf('week') === 0) {
            count = 7;
            setter = 'day';
        }
        else if (field.indexOf('month') === 0) {
            count = 12;
            setter = 'month';
        }
        else {
            return;
        }

        moment[field] = function (format, index) {
            var i, getter,
                method = moment.fn._lang[field],
                results = [];

            if (typeof format === 'number') {
                index = format;
                format = undefined;
            }

            getter = function (i) {
                var m = moment().utc().set(setter, i);
                return method.call(moment.fn._lang, m, format || '');
            };

            if (index != null) {
                return getter(index);
            }
            else {
                for (i = 0; i < count; i++) {
                    results.push(getter(i));
                }
                return results;
            }
        };
    }

    function toInt(argumentForCoercion) {
        var coercedNumber = +argumentForCoercion,
            value = 0;

        if (coercedNumber !== 0 && isFinite(coercedNumber)) {
            if (coercedNumber >= 0) {
                value = Math.floor(coercedNumber);
            } else {
                value = Math.ceil(coercedNumber);
            }
        }

        return value;
    }

    function daysInMonth(year, month) {
        return new Date(Date.UTC(year, month + 1, 0)).getUTCDate();
    }

    function weeksInYear(year, dow, doy) {
        return weekOfYear(moment([year, 11, 31 + dow - doy]), dow, doy).week;
    }

    function daysInYear(year) {
        return isLeapYear(year) ? 366 : 365;
    }

    function isLeapYear(year) {
        return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
    }

    function checkOverflow(m) {
        var overflow;
        if (m._a && m._pf.overflow === -2) {
            overflow =
                m._a[MONTH] < 0 || m._a[MONTH] > 11 ? MONTH :
                m._a[DATE] < 1 || m._a[DATE] > daysInMonth(m._a[YEAR], m._a[MONTH]) ? DATE :
                m._a[HOUR] < 0 || m._a[HOUR] > 23 ? HOUR :
                m._a[MINUTE] < 0 || m._a[MINUTE] > 59 ? MINUTE :
                m._a[SECOND] < 0 || m._a[SECOND] > 59 ? SECOND :
                m._a[MILLISECOND] < 0 || m._a[MILLISECOND] > 999 ? MILLISECOND :
                -1;

            if (m._pf._overflowDayOfYear && (overflow < YEAR || overflow > DATE)) {
                overflow = DATE;
            }

            m._pf.overflow = overflow;
        }
    }

    function isValid(m) {
        if (m._isValid == null) {
            m._isValid = !isNaN(m._d.getTime()) &&
                m._pf.overflow < 0 &&
                !m._pf.empty &&
                !m._pf.invalidMonth &&
                !m._pf.nullInput &&
                !m._pf.invalidFormat &&
                !m._pf.userInvalidated;

            if (m._strict) {
                m._isValid = m._isValid &&
                    m._pf.charsLeftOver === 0 &&
                    m._pf.unusedTokens.length === 0;
            }
        }
        return m._isValid;
    }

    function normalizeLanguage(key) {
        return key ? key.toLowerCase().replace('_', '-') : key;
    }

    // Return a moment from input, that is local/utc/zone equivalent to model.
    function makeAs(input, model) {
        return model._isUTC ? moment(input).zone(model._offset || 0) :
            moment(input).local();
    }

    /************************************
        Languages
    ************************************/


    extend(Language.prototype, {

        set : function (config) {
            var prop, i;
            for (i in config) {
                prop = config[i];
                if (typeof prop === 'function') {
                    this[i] = prop;
                } else {
                    this['_' + i] = prop;
                }
            }
        },

        _months : "January_February_March_April_May_June_July_August_September_October_November_December".split("_"),
        months : function (m) {
            return this._months[m.month()];
        },

        _monthsShort : "Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec".split("_"),
        monthsShort : function (m) {
            return this._monthsShort[m.month()];
        },

        monthsParse : function (monthName) {
            var i, mom, regex;

            if (!this._monthsParse) {
                this._monthsParse = [];
            }

            for (i = 0; i < 12; i++) {
                // make the regex if we don't have it already
                if (!this._monthsParse[i]) {
                    mom = moment.utc([2000, i]);
                    regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
                    this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
                }
                // test the regex
                if (this._monthsParse[i].test(monthName)) {
                    return i;
                }
            }
        },

        _weekdays : "Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday".split("_"),
        weekdays : function (m) {
            return this._weekdays[m.day()];
        },

        _weekdaysShort : "Sun_Mon_Tue_Wed_Thu_Fri_Sat".split("_"),
        weekdaysShort : function (m) {
            return this._weekdaysShort[m.day()];
        },

        _weekdaysMin : "Su_Mo_Tu_We_Th_Fr_Sa".split("_"),
        weekdaysMin : function (m) {
            return this._weekdaysMin[m.day()];
        },

        weekdaysParse : function (weekdayName) {
            var i, mom, regex;

            if (!this._weekdaysParse) {
                this._weekdaysParse = [];
            }

            for (i = 0; i < 7; i++) {
                // make the regex if we don't have it already
                if (!this._weekdaysParse[i]) {
                    mom = moment([2000, 1]).day(i);
                    regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
                    this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
                }
                // test the regex
                if (this._weekdaysParse[i].test(weekdayName)) {
                    return i;
                }
            }
        },

        _longDateFormat : {
            LT : "h:mm A",
            L : "MM/DD/YYYY",
            LL : "MMMM D YYYY",
            LLL : "MMMM D YYYY LT",
            LLLL : "dddd, MMMM D YYYY LT"
        },
        longDateFormat : function (key) {
            var output = this._longDateFormat[key];
            if (!output && this._longDateFormat[key.toUpperCase()]) {
                output = this._longDateFormat[key.toUpperCase()].replace(/MMMM|MM|DD|dddd/g, function (val) {
                    return val.slice(1);
                });
                this._longDateFormat[key] = output;
            }
            return output;
        },

        isPM : function (input) {
            // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
            // Using charAt should be more compatible.
            return ((input + '').toLowerCase().charAt(0) === 'p');
        },

        _meridiemParse : /[ap]\.?m?\.?/i,
        meridiem : function (hours, minutes, isLower) {
            if (hours > 11) {
                return isLower ? 'pm' : 'PM';
            } else {
                return isLower ? 'am' : 'AM';
            }
        },

        _calendar : {
            sameDay : '[Today at] LT',
            nextDay : '[Tomorrow at] LT',
            nextWeek : 'dddd [at] LT',
            lastDay : '[Yesterday at] LT',
            lastWeek : '[Last] dddd [at] LT',
            sameElse : 'L'
        },
        calendar : function (key, mom) {
            var output = this._calendar[key];
            return typeof output === 'function' ? output.apply(mom) : output;
        },

        _relativeTime : {
            future : "in %s",
            past : "%s ago",
            s : "a few seconds",
            m : "a minute",
            mm : "%d minutes",
            h : "an hour",
            hh : "%d hours",
            d : "a day",
            dd : "%d days",
            M : "a month",
            MM : "%d months",
            y : "a year",
            yy : "%d years"
        },
        relativeTime : function (number, withoutSuffix, string, isFuture) {
            var output = this._relativeTime[string];
            return (typeof output === 'function') ?
                output(number, withoutSuffix, string, isFuture) :
                output.replace(/%d/i, number);
        },
        pastFuture : function (diff, output) {
            var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
            return typeof format === 'function' ? format(output) : format.replace(/%s/i, output);
        },

        ordinal : function (number) {
            return this._ordinal.replace("%d", number);
        },
        _ordinal : "%d",

        preparse : function (string) {
            return string;
        },

        postformat : function (string) {
            return string;
        },

        week : function (mom) {
            return weekOfYear(mom, this._week.dow, this._week.doy).week;
        },

        _week : {
            dow : 0, // Sunday is the first day of the week.
            doy : 6  // The week that contains Jan 1st is the first week of the year.
        },

        _invalidDate: 'Invalid date',
        invalidDate: function () {
            return this._invalidDate;
        }
    });

    // Loads a language definition into the `languages` cache.  The function
    // takes a key and optionally values.  If not in the browser and no values
    // are provided, it will load the language file module.  As a convenience,
    // this function also returns the language values.
    function loadLang(key, values) {
        values.abbr = key;
        if (!languages[key]) {
            languages[key] = new Language();
        }
        languages[key].set(values);
        return languages[key];
    }

    // Remove a language from the `languages` cache. Mostly useful in tests.
    function unloadLang(key) {
        delete languages[key];
    }

    // Determines which language definition to use and returns it.
    //
    // With no parameters, it will return the global language.  If you
    // pass in a language key, such as 'en', it will return the
    // definition for 'en', so long as 'en' has already been loaded using
    // moment.lang.
    function getLangDefinition(key) {
        var i = 0, j, lang, next, split,
            get = function (k) {
                if (!languages[k] && hasModule) {
                    try {
                        require('./lang/' + k);
                    } catch (e) { }
                }
                return languages[k];
            };

        if (!key) {
            return moment.fn._lang;
        }

        if (!isArray(key)) {
            //short-circuit everything else
            lang = get(key);
            if (lang) {
                return lang;
            }
            key = [key];
        }

        //pick the language from the array
        //try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
        //substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
        while (i < key.length) {
            split = normalizeLanguage(key[i]).split('-');
            j = split.length;
            next = normalizeLanguage(key[i + 1]);
            next = next ? next.split('-') : null;
            while (j > 0) {
                lang = get(split.slice(0, j).join('-'));
                if (lang) {
                    return lang;
                }
                if (next && next.length >= j && compareArrays(split, next, true) >= j - 1) {
                    //the next array item is better than a shallower substring of this one
                    break;
                }
                j--;
            }
            i++;
        }
        return moment.fn._lang;
    }

    /************************************
        Formatting
    ************************************/


    function removeFormattingTokens(input) {
        if (input.match(/\[[\s\S]/)) {
            return input.replace(/^\[|\]$/g, "");
        }
        return input.replace(/\\/g, "");
    }

    function makeFormatFunction(format) {
        var array = format.match(formattingTokens), i, length;

        for (i = 0, length = array.length; i < length; i++) {
            if (formatTokenFunctions[array[i]]) {
                array[i] = formatTokenFunctions[array[i]];
            } else {
                array[i] = removeFormattingTokens(array[i]);
            }
        }

        return function (mom) {
            var output = "";
            for (i = 0; i < length; i++) {
                output += array[i] instanceof Function ? array[i].call(mom, format) : array[i];
            }
            return output;
        };
    }

    // format date using native date object
    function formatMoment(m, format) {

        if (!m.isValid()) {
            return m.lang().invalidDate();
        }

        format = expandFormat(format, m.lang());

        if (!formatFunctions[format]) {
            formatFunctions[format] = makeFormatFunction(format);
        }

        return formatFunctions[format](m);
    }

    function expandFormat(format, lang) {
        var i = 5;

        function replaceLongDateFormatTokens(input) {
            return lang.longDateFormat(input) || input;
        }

        localFormattingTokens.lastIndex = 0;
        while (i >= 0 && localFormattingTokens.test(format)) {
            format = format.replace(localFormattingTokens, replaceLongDateFormatTokens);
            localFormattingTokens.lastIndex = 0;
            i -= 1;
        }

        return format;
    }


    /************************************
        Parsing
    ************************************/


    // get the regex to find the next token
    function getParseRegexForToken(token, config) {
        var a, strict = config._strict;
        switch (token) {
        case 'Q':
            return parseTokenOneDigit;
        case 'DDDD':
            return parseTokenThreeDigits;
        case 'YYYY':
        case 'GGGG':
        case 'gggg':
            return strict ? parseTokenFourDigits : parseTokenOneToFourDigits;
        case 'Y':
        case 'G':
        case 'g':
            return parseTokenSignedNumber;
        case 'YYYYYY':
        case 'YYYYY':
        case 'GGGGG':
        case 'ggggg':
            return strict ? parseTokenSixDigits : parseTokenOneToSixDigits;
        case 'S':
            if (strict) { return parseTokenOneDigit; }
            /* falls through */
        case 'SS':
            if (strict) { return parseTokenTwoDigits; }
            /* falls through */
        case 'SSS':
            if (strict) { return parseTokenThreeDigits; }
            /* falls through */
        case 'DDD':
            return parseTokenOneToThreeDigits;
        case 'MMM':
        case 'MMMM':
        case 'dd':
        case 'ddd':
        case 'dddd':
            return parseTokenWord;
        case 'a':
        case 'A':
            return getLangDefinition(config._l)._meridiemParse;
        case 'X':
            return parseTokenTimestampMs;
        case 'Z':
        case 'ZZ':
            return parseTokenTimezone;
        case 'T':
            return parseTokenT;
        case 'SSSS':
            return parseTokenDigits;
        case 'MM':
        case 'DD':
        case 'YY':
        case 'GG':
        case 'gg':
        case 'HH':
        case 'hh':
        case 'mm':
        case 'ss':
        case 'ww':
        case 'WW':
            return strict ? parseTokenTwoDigits : parseTokenOneOrTwoDigits;
        case 'M':
        case 'D':
        case 'd':
        case 'H':
        case 'h':
        case 'm':
        case 's':
        case 'w':
        case 'W':
        case 'e':
        case 'E':
            return parseTokenOneOrTwoDigits;
        case 'Do':
            return parseTokenOrdinal;
        default :
            a = new RegExp(regexpEscape(unescapeFormat(token.replace('\\', '')), "i"));
            return a;
        }
    }

    function timezoneMinutesFromString(string) {
        string = string || "";
        var possibleTzMatches = (string.match(parseTokenTimezone) || []),
            tzChunk = possibleTzMatches[possibleTzMatches.length - 1] || [],
            parts = (tzChunk + '').match(parseTimezoneChunker) || ['-', 0, 0],
            minutes = +(parts[1] * 60) + toInt(parts[2]);

        return parts[0] === '+' ? -minutes : minutes;
    }

    // function to convert string input to date
    function addTimeToArrayFromToken(token, input, config) {
        var a, datePartArray = config._a;

        switch (token) {
        // QUARTER
        case 'Q':
            if (input != null) {
                datePartArray[MONTH] = (toInt(input) - 1) * 3;
            }
            break;
        // MONTH
        case 'M' : // fall through to MM
        case 'MM' :
            if (input != null) {
                datePartArray[MONTH] = toInt(input) - 1;
            }
            break;
        case 'MMM' : // fall through to MMMM
        case 'MMMM' :
            a = getLangDefinition(config._l).monthsParse(input);
            // if we didn't find a month name, mark the date as invalid.
            if (a != null) {
                datePartArray[MONTH] = a;
            } else {
                config._pf.invalidMonth = input;
            }
            break;
        // DAY OF MONTH
        case 'D' : // fall through to DD
        case 'DD' :
            if (input != null) {
                datePartArray[DATE] = toInt(input);
            }
            break;
        case 'Do' :
            if (input != null) {
                datePartArray[DATE] = toInt(parseInt(input, 10));
            }
            break;
        // DAY OF YEAR
        case 'DDD' : // fall through to DDDD
        case 'DDDD' :
            if (input != null) {
                config._dayOfYear = toInt(input);
            }

            break;
        // YEAR
        case 'YY' :
            datePartArray[YEAR] = moment.parseTwoDigitYear(input);
            break;
        case 'YYYY' :
        case 'YYYYY' :
        case 'YYYYYY' :
            datePartArray[YEAR] = toInt(input);
            break;
        // AM / PM
        case 'a' : // fall through to A
        case 'A' :
            config._isPm = getLangDefinition(config._l).isPM(input);
            break;
        // 24 HOUR
        case 'H' : // fall through to hh
        case 'HH' : // fall through to hh
        case 'h' : // fall through to hh
        case 'hh' :
            datePartArray[HOUR] = toInt(input);
            break;
        // MINUTE
        case 'm' : // fall through to mm
        case 'mm' :
            datePartArray[MINUTE] = toInt(input);
            break;
        // SECOND
        case 's' : // fall through to ss
        case 'ss' :
            datePartArray[SECOND] = toInt(input);
            break;
        // MILLISECOND
        case 'S' :
        case 'SS' :
        case 'SSS' :
        case 'SSSS' :
            datePartArray[MILLISECOND] = toInt(('0.' + input) * 1000);
            break;
        // UNIX TIMESTAMP WITH MS
        case 'X':
            config._d = new Date(parseFloat(input) * 1000);
            break;
        // TIMEZONE
        case 'Z' : // fall through to ZZ
        case 'ZZ' :
            config._useUTC = true;
            config._tzm = timezoneMinutesFromString(input);
            break;
        case 'w':
        case 'ww':
        case 'W':
        case 'WW':
        case 'd':
        case 'dd':
        case 'ddd':
        case 'dddd':
        case 'e':
        case 'E':
            token = token.substr(0, 1);
            /* falls through */
        case 'gg':
        case 'gggg':
        case 'GG':
        case 'GGGG':
        case 'GGGGG':
            token = token.substr(0, 2);
            if (input) {
                config._w = config._w || {};
                config._w[token] = input;
            }
            break;
        }
    }

    // convert an array to a date.
    // the array should mirror the parameters below
    // note: all values past the year are optional and will default to the lowest possible value.
    // [year, month, day , hour, minute, second, millisecond]
    function dateFromConfig(config) {
        var i, date, input = [], currentDate,
            yearToUse, fixYear, w, temp, lang, weekday, week;

        if (config._d) {
            return;
        }

        currentDate = currentDateArray(config);

        //compute day of the year from weeks and weekdays
        if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
            fixYear = function (val) {
                var intVal = parseInt(val, 10);
                return val ?
                  (val.length < 3 ? (intVal > 68 ? 1900 + intVal : 2000 + intVal) : intVal) :
                  (config._a[YEAR] == null ? moment().weekYear() : config._a[YEAR]);
            };

            w = config._w;
            if (w.GG != null || w.W != null || w.E != null) {
                temp = dayOfYearFromWeeks(fixYear(w.GG), w.W || 1, w.E, 4, 1);
            }
            else {
                lang = getLangDefinition(config._l);
                weekday = w.d != null ?  parseWeekday(w.d, lang) :
                  (w.e != null ?  parseInt(w.e, 10) + lang._week.dow : 0);

                week = parseInt(w.w, 10) || 1;

                //if we're parsing 'd', then the low day numbers may be next week
                if (w.d != null && weekday < lang._week.dow) {
                    week++;
                }

                temp = dayOfYearFromWeeks(fixYear(w.gg), week, weekday, lang._week.doy, lang._week.dow);
            }

            config._a[YEAR] = temp.year;
            config._dayOfYear = temp.dayOfYear;
        }

        //if the day of the year is set, figure out what it is
        if (config._dayOfYear) {
            yearToUse = config._a[YEAR] == null ? currentDate[YEAR] : config._a[YEAR];

            if (config._dayOfYear > daysInYear(yearToUse)) {
                config._pf._overflowDayOfYear = true;
            }

            date = makeUTCDate(yearToUse, 0, config._dayOfYear);
            config._a[MONTH] = date.getUTCMonth();
            config._a[DATE] = date.getUTCDate();
        }

        // Default to current date.
        // * if no year, month, day of month are given, default to today
        // * if day of month is given, default month and year
        // * if month is given, default only year
        // * if year is given, don't default anything
        for (i = 0; i < 3 && config._a[i] == null; ++i) {
            config._a[i] = input[i] = currentDate[i];
        }

        // Zero out whatever was not defaulted, including time
        for (; i < 7; i++) {
            config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
        }

        // add the offsets to the time to be parsed so that we can have a clean array for checking isValid
        input[HOUR] += toInt((config._tzm || 0) / 60);
        input[MINUTE] += toInt((config._tzm || 0) % 60);

        config._d = (config._useUTC ? makeUTCDate : makeDate).apply(null, input);
    }

    function dateFromObject(config) {
        var normalizedInput;

        if (config._d) {
            return;
        }

        normalizedInput = normalizeObjectUnits(config._i);
        config._a = [
            normalizedInput.year,
            normalizedInput.month,
            normalizedInput.day,
            normalizedInput.hour,
            normalizedInput.minute,
            normalizedInput.second,
            normalizedInput.millisecond
        ];

        dateFromConfig(config);
    }

    function currentDateArray(config) {
        var now = new Date();
        if (config._useUTC) {
            return [
                now.getUTCFullYear(),
                now.getUTCMonth(),
                now.getUTCDate()
            ];
        } else {
            return [now.getFullYear(), now.getMonth(), now.getDate()];
        }
    }

    // date from string and format string
    function makeDateFromStringAndFormat(config) {

        config._a = [];
        config._pf.empty = true;

        // This array is used to make a Date, either with `new Date` or `Date.UTC`
        var lang = getLangDefinition(config._l),
            string = '' + config._i,
            i, parsedInput, tokens, token, skipped,
            stringLength = string.length,
            totalParsedInputLength = 0;

        tokens = expandFormat(config._f, lang).match(formattingTokens) || [];

        for (i = 0; i < tokens.length; i++) {
            token = tokens[i];
            parsedInput = (string.match(getParseRegexForToken(token, config)) || [])[0];
            if (parsedInput) {
                skipped = string.substr(0, string.indexOf(parsedInput));
                if (skipped.length > 0) {
                    config._pf.unusedInput.push(skipped);
                }
                string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
                totalParsedInputLength += parsedInput.length;
            }
            // don't parse if it's not a known token
            if (formatTokenFunctions[token]) {
                if (parsedInput) {
                    config._pf.empty = false;
                }
                else {
                    config._pf.unusedTokens.push(token);
                }
                addTimeToArrayFromToken(token, parsedInput, config);
            }
            else if (config._strict && !parsedInput) {
                config._pf.unusedTokens.push(token);
            }
        }

        // add remaining unparsed input length to the string
        config._pf.charsLeftOver = stringLength - totalParsedInputLength;
        if (string.length > 0) {
            config._pf.unusedInput.push(string);
        }

        // handle am pm
        if (config._isPm && config._a[HOUR] < 12) {
            config._a[HOUR] += 12;
        }
        // if is 12 am, change hours to 0
        if (config._isPm === false && config._a[HOUR] === 12) {
            config._a[HOUR] = 0;
        }

        dateFromConfig(config);
        checkOverflow(config);
    }

    function unescapeFormat(s) {
        return s.replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
            return p1 || p2 || p3 || p4;
        });
    }

    // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
    function regexpEscape(s) {
        return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
    }

    // date from string and array of format strings
    function makeDateFromStringAndArray(config) {
        var tempConfig,
            bestMoment,

            scoreToBeat,
            i,
            currentScore;

        if (config._f.length === 0) {
            config._pf.invalidFormat = true;
            config._d = new Date(NaN);
            return;
        }

        for (i = 0; i < config._f.length; i++) {
            currentScore = 0;
            tempConfig = extend({}, config);
            tempConfig._pf = defaultParsingFlags();
            tempConfig._f = config._f[i];
            makeDateFromStringAndFormat(tempConfig);

            if (!isValid(tempConfig)) {
                continue;
            }

            // if there is any input that was not parsed add a penalty for that format
            currentScore += tempConfig._pf.charsLeftOver;

            //or tokens
            currentScore += tempConfig._pf.unusedTokens.length * 10;

            tempConfig._pf.score = currentScore;

            if (scoreToBeat == null || currentScore < scoreToBeat) {
                scoreToBeat = currentScore;
                bestMoment = tempConfig;
            }
        }

        extend(config, bestMoment || tempConfig);
    }

    // date from iso format
    function makeDateFromString(config) {
        var i, l,
            string = config._i,
            match = isoRegex.exec(string);

        if (match) {
            config._pf.iso = true;
            for (i = 0, l = isoDates.length; i < l; i++) {
                if (isoDates[i][1].exec(string)) {
                    // match[5] should be "T" or undefined
                    config._f = isoDates[i][0] + (match[6] || " ");
                    break;
                }
            }
            for (i = 0, l = isoTimes.length; i < l; i++) {
                if (isoTimes[i][1].exec(string)) {
                    config._f += isoTimes[i][0];
                    break;
                }
            }
            if (string.match(parseTokenTimezone)) {
                config._f += "Z";
            }
            makeDateFromStringAndFormat(config);
        }
        else {
            moment.createFromInputFallback(config);
        }
    }

    function makeDateFromInput(config) {
        var input = config._i,
            matched = aspNetJsonRegex.exec(input);

        if (input === undefined) {
            config._d = new Date();
        } else if (matched) {
            config._d = new Date(+matched[1]);
        } else if (typeof input === 'string') {
            makeDateFromString(config);
        } else if (isArray(input)) {
            config._a = input.slice(0);
            dateFromConfig(config);
        } else if (isDate(input)) {
            config._d = new Date(+input);
        } else if (typeof(input) === 'object') {
            dateFromObject(config);
        } else if (typeof(input) === 'number') {
            // from milliseconds
            config._d = new Date(input);
        } else {
            moment.createFromInputFallback(config);
        }
    }

    function makeDate(y, m, d, h, M, s, ms) {
        //can't just apply() to create a date:
        //http://stackoverflow.com/questions/181348/instantiating-a-javascript-object-by-calling-prototype-constructor-apply
        var date = new Date(y, m, d, h, M, s, ms);

        //the date constructor doesn't accept years < 1970
        if (y < 1970) {
            date.setFullYear(y);
        }
        return date;
    }

    function makeUTCDate(y) {
        var date = new Date(Date.UTC.apply(null, arguments));
        if (y < 1970) {
            date.setUTCFullYear(y);
        }
        return date;
    }

    function parseWeekday(input, language) {
        if (typeof input === 'string') {
            if (!isNaN(input)) {
                input = parseInt(input, 10);
            }
            else {
                input = language.weekdaysParse(input);
                if (typeof input !== 'number') {
                    return null;
                }
            }
        }
        return input;
    }

    /************************************
        Relative Time
    ************************************/


    // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
    function substituteTimeAgo(string, number, withoutSuffix, isFuture, lang) {
        return lang.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
    }

    function relativeTime(milliseconds, withoutSuffix, lang) {
        var seconds = round(Math.abs(milliseconds) / 1000),
            minutes = round(seconds / 60),
            hours = round(minutes / 60),
            days = round(hours / 24),
            years = round(days / 365),
            args = seconds < 45 && ['s', seconds] ||
                minutes === 1 && ['m'] ||
                minutes < 45 && ['mm', minutes] ||
                hours === 1 && ['h'] ||
                hours < 22 && ['hh', hours] ||
                days === 1 && ['d'] ||
                days <= 25 && ['dd', days] ||
                days <= 45 && ['M'] ||
                days < 345 && ['MM', round(days / 30)] ||
                years === 1 && ['y'] || ['yy', years];
        args[2] = withoutSuffix;
        args[3] = milliseconds > 0;
        args[4] = lang;
        return substituteTimeAgo.apply({}, args);
    }


    /************************************
        Week of Year
    ************************************/


    // firstDayOfWeek       0 = sun, 6 = sat
    //                      the day of the week that starts the week
    //                      (usually sunday or monday)
    // firstDayOfWeekOfYear 0 = sun, 6 = sat
    //                      the first week is the week that contains the first
    //                      of this day of the week
    //                      (eg. ISO weeks use thursday (4))
    function weekOfYear(mom, firstDayOfWeek, firstDayOfWeekOfYear) {
        var end = firstDayOfWeekOfYear - firstDayOfWeek,
            daysToDayOfWeek = firstDayOfWeekOfYear - mom.day(),
            adjustedMoment;


        if (daysToDayOfWeek > end) {
            daysToDayOfWeek -= 7;
        }

        if (daysToDayOfWeek < end - 7) {
            daysToDayOfWeek += 7;
        }

        adjustedMoment = moment(mom).add('d', daysToDayOfWeek);
        return {
            week: Math.ceil(adjustedMoment.dayOfYear() / 7),
            year: adjustedMoment.year()
        };
    }

    //http://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
    function dayOfYearFromWeeks(year, week, weekday, firstDayOfWeekOfYear, firstDayOfWeek) {
        var d = makeUTCDate(year, 0, 1).getUTCDay(), daysToAdd, dayOfYear;

        weekday = weekday != null ? weekday : firstDayOfWeek;
        daysToAdd = firstDayOfWeek - d + (d > firstDayOfWeekOfYear ? 7 : 0) - (d < firstDayOfWeek ? 7 : 0);
        dayOfYear = 7 * (week - 1) + (weekday - firstDayOfWeek) + daysToAdd + 1;

        return {
            year: dayOfYear > 0 ? year : year - 1,
            dayOfYear: dayOfYear > 0 ?  dayOfYear : daysInYear(year - 1) + dayOfYear
        };
    }

    /************************************
        Top Level Functions
    ************************************/

    function makeMoment(config) {
        var input = config._i,
            format = config._f;

        if (input === null || (format === undefined && input === '')) {
            return moment.invalid({nullInput: true});
        }

        if (typeof input === 'string') {
            config._i = input = getLangDefinition().preparse(input);
        }

        if (moment.isMoment(input)) {
            config = cloneMoment(input);

            config._d = new Date(+input._d);
        } else if (format) {
            if (isArray(format)) {
                makeDateFromStringAndArray(config);
            } else {
                makeDateFromStringAndFormat(config);
            }
        } else {
            makeDateFromInput(config);
        }

        return new Moment(config);
    }

    moment = function (input, format, lang, strict) {
        var c;

        if (typeof(lang) === "boolean") {
            strict = lang;
            lang = undefined;
        }
        // object construction must be done this way.
        // https://github.com/moment/moment/issues/1423
        c = {};
        c._isAMomentObject = true;
        c._i = input;
        c._f = format;
        c._l = lang;
        c._strict = strict;
        c._isUTC = false;
        c._pf = defaultParsingFlags();

        return makeMoment(c);
    };

    moment.suppressDeprecationWarnings = false;

    moment.createFromInputFallback = deprecate(
            "moment construction falls back to js Date. This is " +
            "discouraged and will be removed in upcoming major " +
            "release. Please refer to " +
            "https://github.com/moment/moment/issues/1407 for more info.",
            function (config) {
        config._d = new Date(config._i);
    });

    // creating with utc
    moment.utc = function (input, format, lang, strict) {
        var c;

        if (typeof(lang) === "boolean") {
            strict = lang;
            lang = undefined;
        }
        // object construction must be done this way.
        // https://github.com/moment/moment/issues/1423
        c = {};
        c._isAMomentObject = true;
        c._useUTC = true;
        c._isUTC = true;
        c._l = lang;
        c._i = input;
        c._f = format;
        c._strict = strict;
        c._pf = defaultParsingFlags();

        return makeMoment(c).utc();
    };

    // creating with unix timestamp (in seconds)
    moment.unix = function (input) {
        return moment(input * 1000);
    };

    // duration
    moment.duration = function (input, key) {
        var duration = input,
            // matching against regexp is expensive, do it on demand
            match = null,
            sign,
            ret,
            parseIso;

        if (moment.isDuration(input)) {
            duration = {
                ms: input._milliseconds,
                d: input._days,
                M: input._months
            };
        } else if (typeof input === 'number') {
            duration = {};
            if (key) {
                duration[key] = input;
            } else {
                duration.milliseconds = input;
            }
        } else if (!!(match = aspNetTimeSpanJsonRegex.exec(input))) {
            sign = (match[1] === "-") ? -1 : 1;
            duration = {
                y: 0,
                d: toInt(match[DATE]) * sign,
                h: toInt(match[HOUR]) * sign,
                m: toInt(match[MINUTE]) * sign,
                s: toInt(match[SECOND]) * sign,
                ms: toInt(match[MILLISECOND]) * sign
            };
        } else if (!!(match = isoDurationRegex.exec(input))) {
            sign = (match[1] === "-") ? -1 : 1;
            parseIso = function (inp) {
                // We'd normally use ~~inp for this, but unfortunately it also
                // converts floats to ints.
                // inp may be undefined, so careful calling replace on it.
                var res = inp && parseFloat(inp.replace(',', '.'));
                // apply sign while we're at it
                return (isNaN(res) ? 0 : res) * sign;
            };
            duration = {
                y: parseIso(match[2]),
                M: parseIso(match[3]),
                d: parseIso(match[4]),
                h: parseIso(match[5]),
                m: parseIso(match[6]),
                s: parseIso(match[7]),
                w: parseIso(match[8])
            };
        }

        ret = new Duration(duration);

        if (moment.isDuration(input) && input.hasOwnProperty('_lang')) {
            ret._lang = input._lang;
        }

        return ret;
    };

    // version number
    moment.version = VERSION;

    // default format
    moment.defaultFormat = isoFormat;

    // Plugins that add properties should also add the key here (null value),
    // so we can properly clone ourselves.
    moment.momentProperties = momentProperties;

    // This function will be called whenever a moment is mutated.
    // It is intended to keep the offset in sync with the timezone.
    moment.updateOffset = function () {};

    // This function will load languages and then set the global language.  If
    // no arguments are passed in, it will simply return the current global
    // language key.
    moment.lang = function (key, values) {
        var r;
        if (!key) {
            return moment.fn._lang._abbr;
        }
        if (values) {
            loadLang(normalizeLanguage(key), values);
        } else if (values === null) {
            unloadLang(key);
            key = 'en';
        } else if (!languages[key]) {
            getLangDefinition(key);
        }
        r = moment.duration.fn._lang = moment.fn._lang = getLangDefinition(key);
        return r._abbr;
    };

    // returns language data
    moment.langData = function (key) {
        if (key && key._lang && key._lang._abbr) {
            key = key._lang._abbr;
        }
        return getLangDefinition(key);
    };

    // compare moment object
    moment.isMoment = function (obj) {
        return obj instanceof Moment ||
            (obj != null &&  obj.hasOwnProperty('_isAMomentObject'));
    };

    // for typechecking Duration objects
    moment.isDuration = function (obj) {
        return obj instanceof Duration;
    };

    for (i = lists.length - 1; i >= 0; --i) {
        makeList(lists[i]);
    }

    moment.normalizeUnits = function (units) {
        return normalizeUnits(units);
    };

    moment.invalid = function (flags) {
        var m = moment.utc(NaN);
        if (flags != null) {
            extend(m._pf, flags);
        }
        else {
            m._pf.userInvalidated = true;
        }

        return m;
    };

    moment.parseZone = function () {
        return moment.apply(null, arguments).parseZone();
    };

    moment.parseTwoDigitYear = function (input) {
        return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
    };

    /************************************
        Moment Prototype
    ************************************/


    extend(moment.fn = Moment.prototype, {

        clone : function () {
            return moment(this);
        },

        valueOf : function () {
            return +this._d + ((this._offset || 0) * 60000);
        },

        unix : function () {
            return Math.floor(+this / 1000);
        },

        toString : function () {
            return this.clone().lang('en').format("ddd MMM DD YYYY HH:mm:ss [GMT]ZZ");
        },

        toDate : function () {
            return this._offset ? new Date(+this) : this._d;
        },

        toISOString : function () {
            var m = moment(this).utc();
            if (0 < m.year() && m.year() <= 9999) {
                return formatMoment(m, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
            } else {
                return formatMoment(m, 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
            }
        },

        toArray : function () {
            var m = this;
            return [
                m.year(),
                m.month(),
                m.date(),
                m.hours(),
                m.minutes(),
                m.seconds(),
                m.milliseconds()
            ];
        },

        isValid : function () {
            return isValid(this);
        },

        isDSTShifted : function () {

            if (this._a) {
                return this.isValid() && compareArrays(this._a, (this._isUTC ? moment.utc(this._a) : moment(this._a)).toArray()) > 0;
            }

            return false;
        },

        parsingFlags : function () {
            return extend({}, this._pf);
        },

        invalidAt: function () {
            return this._pf.overflow;
        },

        utc : function () {
            return this.zone(0);
        },

        local : function () {
            this.zone(0);
            this._isUTC = false;
            return this;
        },

        format : function (inputString) {
            var output = formatMoment(this, inputString || moment.defaultFormat);
            return this.lang().postformat(output);
        },

        add : function (input, val) {
            var dur;
            // switch args to support add('s', 1) and add(1, 's')
            if (typeof input === 'string') {
                dur = moment.duration(+val, input);
            } else {
                dur = moment.duration(input, val);
            }
            addOrSubtractDurationFromMoment(this, dur, 1);
            return this;
        },

        subtract : function (input, val) {
            var dur;
            // switch args to support subtract('s', 1) and subtract(1, 's')
            if (typeof input === 'string') {
                dur = moment.duration(+val, input);
            } else {
                dur = moment.duration(input, val);
            }
            addOrSubtractDurationFromMoment(this, dur, -1);
            return this;
        },

        diff : function (input, units, asFloat) {
            var that = makeAs(input, this),
                zoneDiff = (this.zone() - that.zone()) * 6e4,
                diff, output;

            units = normalizeUnits(units);

            if (units === 'year' || units === 'month') {
                // average number of days in the months in the given dates
                diff = (this.daysInMonth() + that.daysInMonth()) * 432e5; // 24 * 60 * 60 * 1000 / 2
                // difference in months
                output = ((this.year() - that.year()) * 12) + (this.month() - that.month());
                // adjust by taking difference in days, average number of days
                // and dst in the given months.
                output += ((this - moment(this).startOf('month')) -
                        (that - moment(that).startOf('month'))) / diff;
                // same as above but with zones, to negate all dst
                output -= ((this.zone() - moment(this).startOf('month').zone()) -
                        (that.zone() - moment(that).startOf('month').zone())) * 6e4 / diff;
                if (units === 'year') {
                    output = output / 12;
                }
            } else {
                diff = (this - that);
                output = units === 'second' ? diff / 1e3 : // 1000
                    units === 'minute' ? diff / 6e4 : // 1000 * 60
                    units === 'hour' ? diff / 36e5 : // 1000 * 60 * 60
                    units === 'day' ? (diff - zoneDiff) / 864e5 : // 1000 * 60 * 60 * 24, negate dst
                    units === 'week' ? (diff - zoneDiff) / 6048e5 : // 1000 * 60 * 60 * 24 * 7, negate dst
                    diff;
            }
            return asFloat ? output : absRound(output);
        },

        from : function (time, withoutSuffix) {
            return moment.duration(this.diff(time)).lang(this.lang()._abbr).humanize(!withoutSuffix);
        },

        fromNow : function (withoutSuffix) {
            return this.from(moment(), withoutSuffix);
        },

        calendar : function () {
            // We want to compare the start of today, vs this.
            // Getting start-of-today depends on whether we're zone'd or not.
            var sod = makeAs(moment(), this).startOf('day'),
                diff = this.diff(sod, 'days', true),
                format = diff < -6 ? 'sameElse' :
                    diff < -1 ? 'lastWeek' :
                    diff < 0 ? 'lastDay' :
                    diff < 1 ? 'sameDay' :
                    diff < 2 ? 'nextDay' :
                    diff < 7 ? 'nextWeek' : 'sameElse';
            return this.format(this.lang().calendar(format, this));
        },

        isLeapYear : function () {
            return isLeapYear(this.year());
        },

        isDST : function () {
            return (this.zone() < this.clone().month(0).zone() ||
                this.zone() < this.clone().month(5).zone());
        },

        day : function (input) {
            var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
            if (input != null) {
                input = parseWeekday(input, this.lang());
                return this.add({ d : input - day });
            } else {
                return day;
            }
        },

        month : makeAccessor('Month', true),

        startOf: function (units) {
            units = normalizeUnits(units);
            // the following switch intentionally omits break keywords
            // to utilize falling through the cases.
            switch (units) {
            case 'year':
                this.month(0);
                /* falls through */
            case 'quarter':
            case 'month':
                this.date(1);
                /* falls through */
            case 'week':
            case 'isoWeek':
            case 'day':
                this.hours(0);
                /* falls through */
            case 'hour':
                this.minutes(0);
                /* falls through */
            case 'minute':
                this.seconds(0);
                /* falls through */
            case 'second':
                this.milliseconds(0);
                /* falls through */
            }

            // weeks are a special case
            if (units === 'week') {
                this.weekday(0);
            } else if (units === 'isoWeek') {
                this.isoWeekday(1);
            }

            // quarters are also special
            if (units === 'quarter') {
                this.month(Math.floor(this.month() / 3) * 3);
            }

            return this;
        },

        endOf: function (units) {
            units = normalizeUnits(units);
            return this.startOf(units).add((units === 'isoWeek' ? 'week' : units), 1).subtract('ms', 1);
        },

        isAfter: function (input, units) {
            units = typeof units !== 'undefined' ? units : 'millisecond';
            return +this.clone().startOf(units) > +moment(input).startOf(units);
        },

        isBefore: function (input, units) {
            units = typeof units !== 'undefined' ? units : 'millisecond';
            return +this.clone().startOf(units) < +moment(input).startOf(units);
        },

        isSame: function (input, units) {
            units = units || 'ms';
            return +this.clone().startOf(units) === +makeAs(input, this).startOf(units);
        },

        min: function (other) {
            other = moment.apply(null, arguments);
            return other < this ? this : other;
        },

        max: function (other) {
            other = moment.apply(null, arguments);
            return other > this ? this : other;
        },

        // keepTime = true means only change the timezone, without affecting
        // the local hour. So 5:31:26 +0300 --[zone(2, true)]--> 5:31:26 +0200
        // It is possible that 5:31:26 doesn't exist int zone +0200, so we
        // adjust the time as needed, to be valid.
        //
        // Keeping the time actually adds/subtracts (one hour)
        // from the actual represented time. That is why we call updateOffset
        // a second time. In case it wants us to change the offset again
        // _changeInProgress == true case, then we have to adjust, because
        // there is no such time in the given timezone.
        zone : function (input, keepTime) {
            var offset = this._offset || 0;
            if (input != null) {
                if (typeof input === "string") {
                    input = timezoneMinutesFromString(input);
                }
                if (Math.abs(input) < 16) {
                    input = input * 60;
                }
                this._offset = input;
                this._isUTC = true;
                if (offset !== input) {
                    if (!keepTime || this._changeInProgress) {
                        addOrSubtractDurationFromMoment(this,
                                moment.duration(offset - input, 'm'), 1, false);
                    } else if (!this._changeInProgress) {
                        this._changeInProgress = true;
                        moment.updateOffset(this, true);
                        this._changeInProgress = null;
                    }
                }
            } else {
                return this._isUTC ? offset : this._d.getTimezoneOffset();
            }
            return this;
        },

        zoneAbbr : function () {
            return this._isUTC ? "UTC" : "";
        },

        zoneName : function () {
            return this._isUTC ? "Coordinated Universal Time" : "";
        },

        parseZone : function () {
            if (this._tzm) {
                this.zone(this._tzm);
            } else if (typeof this._i === 'string') {
                this.zone(this._i);
            }
            return this;
        },

        hasAlignedHourOffset : function (input) {
            if (!input) {
                input = 0;
            }
            else {
                input = moment(input).zone();
            }

            return (this.zone() - input) % 60 === 0;
        },

        daysInMonth : function () {
            return daysInMonth(this.year(), this.month());
        },

        dayOfYear : function (input) {
            var dayOfYear = round((moment(this).startOf('day') - moment(this).startOf('year')) / 864e5) + 1;
            return input == null ? dayOfYear : this.add("d", (input - dayOfYear));
        },

        quarter : function (input) {
            return input == null ? Math.ceil((this.month() + 1) / 3) : this.month((input - 1) * 3 + this.month() % 3);
        },

        weekYear : function (input) {
            var year = weekOfYear(this, this.lang()._week.dow, this.lang()._week.doy).year;
            return input == null ? year : this.add("y", (input - year));
        },

        isoWeekYear : function (input) {
            var year = weekOfYear(this, 1, 4).year;
            return input == null ? year : this.add("y", (input - year));
        },

        week : function (input) {
            var week = this.lang().week(this);
            return input == null ? week : this.add("d", (input - week) * 7);
        },

        isoWeek : function (input) {
            var week = weekOfYear(this, 1, 4).week;
            return input == null ? week : this.add("d", (input - week) * 7);
        },

        weekday : function (input) {
            var weekday = (this.day() + 7 - this.lang()._week.dow) % 7;
            return input == null ? weekday : this.add("d", input - weekday);
        },

        isoWeekday : function (input) {
            // behaves the same as moment#day except
            // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
            // as a setter, sunday should belong to the previous week.
            return input == null ? this.day() || 7 : this.day(this.day() % 7 ? input : input - 7);
        },

        isoWeeksInYear : function () {
            return weeksInYear(this.year(), 1, 4);
        },

        weeksInYear : function () {
            var weekInfo = this._lang._week;
            return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
        },

        get : function (units) {
            units = normalizeUnits(units);
            return this[units]();
        },

        set : function (units, value) {
            units = normalizeUnits(units);
            if (typeof this[units] === 'function') {
                this[units](value);
            }
            return this;
        },

        // If passed a language key, it will set the language for this
        // instance.  Otherwise, it will return the language configuration
        // variables for this instance.
        lang : function (key) {
            if (key === undefined) {
                return this._lang;
            } else {
                this._lang = getLangDefinition(key);
                return this;
            }
        }
    });

    function rawMonthSetter(mom, value) {
        var dayOfMonth;

        // TODO: Move this out of here!
        if (typeof value === 'string') {
            value = mom.lang().monthsParse(value);
            // TODO: Another silent failure?
            if (typeof value !== 'number') {
                return mom;
            }
        }

        dayOfMonth = Math.min(mom.date(),
                daysInMonth(mom.year(), value));
        mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
        return mom;
    }

    function rawGetter(mom, unit) {
        return mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]();
    }

    function rawSetter(mom, unit, value) {
        if (unit === 'Month') {
            return rawMonthSetter(mom, value);
        } else {
            return mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
        }
    }

    function makeAccessor(unit, keepTime) {
        return function (value) {
            if (value != null) {
                rawSetter(this, unit, value);
                moment.updateOffset(this, keepTime);
                return this;
            } else {
                return rawGetter(this, unit);
            }
        };
    }

    moment.fn.millisecond = moment.fn.milliseconds = makeAccessor('Milliseconds', false);
    moment.fn.second = moment.fn.seconds = makeAccessor('Seconds', false);
    moment.fn.minute = moment.fn.minutes = makeAccessor('Minutes', false);
    // Setting the hour should keep the time, because the user explicitly
    // specified which hour he wants. So trying to maintain the same hour (in
    // a new timezone) makes sense. Adding/subtracting hours does not follow
    // this rule.
    moment.fn.hour = moment.fn.hours = makeAccessor('Hours', true);
    // moment.fn.month is defined separately
    moment.fn.date = makeAccessor('Date', true);
    moment.fn.dates = deprecate("dates accessor is deprecated. Use date instead.", makeAccessor('Date', true));
    moment.fn.year = makeAccessor('FullYear', true);
    moment.fn.years = deprecate("years accessor is deprecated. Use year instead.", makeAccessor('FullYear', true));

    // add plural methods
    moment.fn.days = moment.fn.day;
    moment.fn.months = moment.fn.month;
    moment.fn.weeks = moment.fn.week;
    moment.fn.isoWeeks = moment.fn.isoWeek;
    moment.fn.quarters = moment.fn.quarter;

    // add aliased format methods
    moment.fn.toJSON = moment.fn.toISOString;

    /************************************
        Duration Prototype
    ************************************/


    extend(moment.duration.fn = Duration.prototype, {

        _bubble : function () {
            var milliseconds = this._milliseconds,
                days = this._days,
                months = this._months,
                data = this._data,
                seconds, minutes, hours, years;

            // The following code bubbles up values, see the tests for
            // examples of what that means.
            data.milliseconds = milliseconds % 1000;

            seconds = absRound(milliseconds / 1000);
            data.seconds = seconds % 60;

            minutes = absRound(seconds / 60);
            data.minutes = minutes % 60;

            hours = absRound(minutes / 60);
            data.hours = hours % 24;

            days += absRound(hours / 24);
            data.days = days % 30;

            months += absRound(days / 30);
            data.months = months % 12;

            years = absRound(months / 12);
            data.years = years;
        },

        weeks : function () {
            return absRound(this.days() / 7);
        },

        valueOf : function () {
            return this._milliseconds +
              this._days * 864e5 +
              (this._months % 12) * 2592e6 +
              toInt(this._months / 12) * 31536e6;
        },

        humanize : function (withSuffix) {
            var difference = +this,
                output = relativeTime(difference, !withSuffix, this.lang());

            if (withSuffix) {
                output = this.lang().pastFuture(difference, output);
            }

            return this.lang().postformat(output);
        },

        add : function (input, val) {
            // supports only 2.0-style add(1, 's') or add(moment)
            var dur = moment.duration(input, val);

            this._milliseconds += dur._milliseconds;
            this._days += dur._days;
            this._months += dur._months;

            this._bubble();

            return this;
        },

        subtract : function (input, val) {
            var dur = moment.duration(input, val);

            this._milliseconds -= dur._milliseconds;
            this._days -= dur._days;
            this._months -= dur._months;

            this._bubble();

            return this;
        },

        get : function (units) {
            units = normalizeUnits(units);
            return this[units.toLowerCase() + 's']();
        },

        as : function (units) {
            units = normalizeUnits(units);
            return this['as' + units.charAt(0).toUpperCase() + units.slice(1) + 's']();
        },

        lang : moment.fn.lang,

        toIsoString : function () {
            // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
            var years = Math.abs(this.years()),
                months = Math.abs(this.months()),
                days = Math.abs(this.days()),
                hours = Math.abs(this.hours()),
                minutes = Math.abs(this.minutes()),
                seconds = Math.abs(this.seconds() + this.milliseconds() / 1000);

            if (!this.asSeconds()) {
                // this is the same as C#'s (Noda) and python (isodate)...
                // but not other JS (goog.date)
                return 'P0D';
            }

            return (this.asSeconds() < 0 ? '-' : '') +
                'P' +
                (years ? years + 'Y' : '') +
                (months ? months + 'M' : '') +
                (days ? days + 'D' : '') +
                ((hours || minutes || seconds) ? 'T' : '') +
                (hours ? hours + 'H' : '') +
                (minutes ? minutes + 'M' : '') +
                (seconds ? seconds + 'S' : '');
        }
    });

    function makeDurationGetter(name) {
        moment.duration.fn[name] = function () {
            return this._data[name];
        };
    }

    function makeDurationAsGetter(name, factor) {
        moment.duration.fn['as' + name] = function () {
            return +this / factor;
        };
    }

    for (i in unitMillisecondFactors) {
        if (unitMillisecondFactors.hasOwnProperty(i)) {
            makeDurationAsGetter(i, unitMillisecondFactors[i]);
            makeDurationGetter(i.toLowerCase());
        }
    }

    makeDurationAsGetter('Weeks', 6048e5);
    moment.duration.fn.asMonths = function () {
        return (+this - this.years() * 31536e6) / 2592e6 + this.years() * 12;
    };


    /************************************
        Default Lang
    ************************************/


    // Set default language, other languages will inherit from English.
    moment.lang('en', {
        ordinal : function (number) {
            var b = number % 10,
                output = (toInt(number % 100 / 10) === 1) ? 'th' :
                (b === 1) ? 'st' :
                (b === 2) ? 'nd' :
                (b === 3) ? 'rd' : 'th';
            return number + output;
        }
    });

    /* EMBED_LANGUAGES */

    /************************************
        Exposing Moment
    ************************************/

    function makeGlobal(shouldDeprecate) {
        /*global ender:false */
        if (typeof ender !== 'undefined') {
            return;
        }
        oldGlobalMoment = globalScope.moment;
        if (shouldDeprecate) {
            globalScope.moment = deprecate(
                    "Accessing Moment through the global scope is " +
                    "deprecated, and will be removed in an upcoming " +
                    "release.",
                    moment);
        } else {
            globalScope.moment = moment;
        }
    }

    // CommonJS module is defined
    if (hasModule) {
        module.exports = moment;
    } else if (typeof define === "function" && define.amd) {
        define("moment", ['require','exports','module'],function (require, exports, module) {
            if (module.config && module.config() && module.config().noGlobal === true) {
                // release the global variable
                globalScope.moment = oldGlobalMoment;
            }

            return moment;
        });
        makeGlobal(true);
    } else {
        makeGlobal();
    }
}).call(this);

/*
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
 * in FIPS PUB 180-1
 * Version 2.1a Copyright Paul Johnston 2000 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for details.
 */

/* jshint undef: true, unused: true:, noarg: true, latedef: true */
/* global define */

/* Some functions and variables have been stripped for use with Strophe */

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('strophe-sha1',[],function () {
            return factory();
        });
    } else {
        // Browser globals
        root.SHA1 = factory();
    }
}(this, function () {

/*
 * Calculate the SHA-1 of an array of big-endian words, and a bit length
 */
function core_sha1(x, len)
{
  /* append padding */
  x[len >> 5] |= 0x80 << (24 - len % 32);
  x[((len + 64 >> 9) << 4) + 15] = len;

  var w = new Array(80);
  var a =  1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d =  271733878;
  var e = -1009589776;

  var i, j, t, olda, oldb, oldc, oldd, olde;
  for (i = 0; i < x.length; i += 16)
  {
    olda = a;
    oldb = b;
    oldc = c;
    oldd = d;
    olde = e;

    for (j = 0; j < 80; j++)
    {
      if (j < 16) { w[j] = x[i + j]; }
      else { w[j] = rol(w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16], 1); }
      t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)),
                       safe_add(safe_add(e, w[j]), sha1_kt(j)));
      e = d;
      d = c;
      c = rol(b, 30);
      b = a;
      a = t;
    }

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
    e = safe_add(e, olde);
  }
  return [a, b, c, d, e];
}

/*
 * Perform the appropriate triplet combination function for the current
 * iteration
 */
function sha1_ft(t, b, c, d)
{
  if (t < 20) { return (b & c) | ((~b) & d); }
  if (t < 40) { return b ^ c ^ d; }
  if (t < 60) { return (b & c) | (b & d) | (c & d); }
  return b ^ c ^ d;
}

/*
 * Determine the appropriate additive constant for the current iteration
 */
function sha1_kt(t)
{
  return (t < 20) ?  1518500249 : (t < 40) ?  1859775393 :
         (t < 60) ? -1894007588 : -899497514;
}

/*
 * Calculate the HMAC-SHA1 of a key and some data
 */
function core_hmac_sha1(key, data)
{
  var bkey = str2binb(key);
  if (bkey.length > 16) { bkey = core_sha1(bkey, key.length * 8); }

  var ipad = new Array(16), opad = new Array(16);
  for (var i = 0; i < 16; i++)
  {
    ipad[i] = bkey[i] ^ 0x36363636;
    opad[i] = bkey[i] ^ 0x5C5C5C5C;
  }

  var hash = core_sha1(ipad.concat(str2binb(data)), 512 + data.length * 8);
  return core_sha1(opad.concat(hash), 512 + 160);
}

/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xFFFF);
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function rol(num, cnt)
{
  return (num << cnt) | (num >>> (32 - cnt));
}

/*
 * Convert an 8-bit or 16-bit string to an array of big-endian words
 * In 8-bit function, characters >255 have their hi-byte silently ignored.
 */
function str2binb(str)
{
  var bin = [];
  var mask = 255;
  for (var i = 0; i < str.length * 8; i += 8)
  {
    bin[i>>5] |= (str.charCodeAt(i / 8) & mask) << (24 - i%32);
  }
  return bin;
}

/*
 * Convert an array of big-endian words to a string
 */
function binb2str(bin)
{
  var str = "";
  var mask = 255;
  for (var i = 0; i < bin.length * 32; i += 8)
  {
    str += String.fromCharCode((bin[i>>5] >>> (24 - i%32)) & mask);
  }
  return str;
}

/*
 * Convert an array of big-endian words to a base-64 string
 */
function binb2b64(binarray)
{
  var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var str = "";
  var triplet, j;
  for (var i = 0; i < binarray.length * 4; i += 3)
  {
    triplet = (((binarray[i   >> 2] >> 8 * (3 -  i   %4)) & 0xFF) << 16) |
              (((binarray[i+1 >> 2] >> 8 * (3 - (i+1)%4)) & 0xFF) << 8 ) |
               ((binarray[i+2 >> 2] >> 8 * (3 - (i+2)%4)) & 0xFF);
    for (j = 0; j < 4; j++)
    {
      if (i * 8 + j * 6 > binarray.length * 32) { str += "="; }
      else { str += tab.charAt((triplet >> 6*(3-j)) & 0x3F); }
    }
  }
  return str;
}

/*
 * These are the functions you'll usually want to call
 * They take string arguments and return either hex or base-64 encoded strings
 */
return {
    b64_hmac_sha1:  function (key, data){ return binb2b64(core_hmac_sha1(key, data)); },
    b64_sha1:       function (s) { return binb2b64(core_sha1(str2binb(s),s.length * 8)); },
    binb2str:       binb2str,
    core_hmac_sha1: core_hmac_sha1,
    str_hmac_sha1:  function (key, data){ return binb2str(core_hmac_sha1(key, data)); },
    str_sha1:       function (s) { return binb2str(core_sha1(str2binb(s),s.length * 8)); },
};
}));

// This code was written by Tyler Akins and has been placed in the
// public domain.  It would be nice if you left this header intact.
// Base64 code from Tyler Akins -- http://rumkin.com

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('strophe-base64',[],function () {
            return factory();
        });
    } else {
        // Browser globals
        root.Base64 = factory();
    }
}(this, function () {
    var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

    var obj = {
        /**
         * Encodes a string in base64
         * @param {String} input The string to encode in base64.
         */
        encode: function (input) {
            var output = "";
            var chr1, chr2, chr3;
            var enc1, enc2, enc3, enc4;
            var i = 0;

            do {
                chr1 = input.charCodeAt(i++);
                chr2 = input.charCodeAt(i++);
                chr3 = input.charCodeAt(i++);

                enc1 = chr1 >> 2;
                enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
                enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
                enc4 = chr3 & 63;

                if (isNaN(chr2)) {
                    enc2 = ((chr1 & 3) << 4);
                    enc3 = enc4 = 64;
                } else if (isNaN(chr3)) {
                    enc4 = 64;
                }

                output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) +
                    keyStr.charAt(enc3) + keyStr.charAt(enc4);
            } while (i < input.length);

            return output;
        },

        /**
         * Decodes a base64 string.
         * @param {String} input The string to decode.
         */
        decode: function (input) {
            var output = "";
            var chr1, chr2, chr3;
            var enc1, enc2, enc3, enc4;
            var i = 0;

            // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
            input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

            do {
                enc1 = keyStr.indexOf(input.charAt(i++));
                enc2 = keyStr.indexOf(input.charAt(i++));
                enc3 = keyStr.indexOf(input.charAt(i++));
                enc4 = keyStr.indexOf(input.charAt(i++));

                chr1 = (enc1 << 2) | (enc2 >> 4);
                chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
                chr3 = ((enc3 & 3) << 6) | enc4;

                output = output + String.fromCharCode(chr1);

                if (enc3 != 64) {
                    output = output + String.fromCharCode(chr2);
                }
                if (enc4 != 64) {
                    output = output + String.fromCharCode(chr3);
                }
            } while (i < input.length);

            return output;
        }
    };
    return obj;
}));

/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */

/*
 * Everything that isn't used by Strophe has been stripped here!
 */

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('strophe-md5',[],function () {
            return factory();
        });
    } else {
        // Browser globals
        root.MD5 = factory();
    }
}(this, function (b) {
    /*
     * Add integers, wrapping at 2^32. This uses 16-bit operations internally
     * to work around bugs in some JS interpreters.
     */
    var safe_add = function (x, y) {
        var lsw = (x & 0xFFFF) + (y & 0xFFFF);
        var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
        return (msw << 16) | (lsw & 0xFFFF);
    };

    /*
     * Bitwise rotate a 32-bit number to the left.
     */
    var bit_rol = function (num, cnt) {
        return (num << cnt) | (num >>> (32 - cnt));
    };

    /*
     * Convert a string to an array of little-endian words
     */
    var str2binl = function (str) {
        var bin = [];
        for(var i = 0; i < str.length * 8; i += 8)
        {
            bin[i>>5] |= (str.charCodeAt(i / 8) & 255) << (i%32);
        }
        return bin;
    };

    /*
     * Convert an array of little-endian words to a string
     */
    var binl2str = function (bin) {
        var str = "";
        for(var i = 0; i < bin.length * 32; i += 8)
        {
            str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & 255);
        }
        return str;
    };

    /*
     * Convert an array of little-endian words to a hex string.
     */
    var binl2hex = function (binarray) {
        var hex_tab = "0123456789abcdef";
        var str = "";
        for(var i = 0; i < binarray.length * 4; i++)
        {
            str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
                hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF);
        }
        return str;
    };

    /*
     * These functions implement the four basic operations the algorithm uses.
     */
    var md5_cmn = function (q, a, b, x, s, t) {
        return safe_add(bit_rol(safe_add(safe_add(a, q),safe_add(x, t)), s),b);
    };

    var md5_ff = function (a, b, c, d, x, s, t) {
        return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
    };

    var md5_gg = function (a, b, c, d, x, s, t) {
        return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
    };

    var md5_hh = function (a, b, c, d, x, s, t) {
        return md5_cmn(b ^ c ^ d, a, b, x, s, t);
    };

    var md5_ii = function (a, b, c, d, x, s, t) {
        return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
    };

    /*
     * Calculate the MD5 of an array of little-endian words, and a bit length
     */
    var core_md5 = function (x, len) {
        /* append padding */
        x[len >> 5] |= 0x80 << ((len) % 32);
        x[(((len + 64) >>> 9) << 4) + 14] = len;

        var a =  1732584193;
        var b = -271733879;
        var c = -1732584194;
        var d =  271733878;

        var olda, oldb, oldc, oldd;
        for (var i = 0; i < x.length; i += 16)
        {
            olda = a;
            oldb = b;
            oldc = c;
            oldd = d;

            a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
            d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
            c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
            b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
            a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
            d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
            c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
            b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
            a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
            d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
            c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
            b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
            a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
            d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
            c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
            b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

            a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
            d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
            c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
            b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
            a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
            d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
            c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
            b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
            a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
            d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
            c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
            b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
            a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
            d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
            c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
            b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

            a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
            d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
            c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
            b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
            a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
            d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
            c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
            b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
            a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
            d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
            c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
            b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
            a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
            d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
            c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
            b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

            a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
            d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
            c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
            b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
            a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
            d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
            c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
            b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
            a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
            d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
            c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
            b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
            a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
            d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
            c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
            b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

            a = safe_add(a, olda);
            b = safe_add(b, oldb);
            c = safe_add(c, oldc);
            d = safe_add(d, oldd);
        }
        return [a, b, c, d];
    };

    var obj = {
        /*
         * These are the functions you'll usually want to call.
         * They take string arguments and return either hex or base-64 encoded
         * strings.
         */
        hexdigest: function (s) {
            return binl2hex(core_md5(str2binl(s), s.length * 8));
        },

        hash: function (s) {
            return binl2str(core_md5(str2binl(s), s.length * 8));
        }
    };
    return obj;
}));

/*
    This program is distributed under the terms of the MIT license.
    Please see the LICENSE file for details.

    Copyright 2006-2008, OGG, LLC
*/

/* jshint undef: true, unused: true:, noarg: true, latedef: true */

/** PrivateFunction: Function.prototype.bind
 *  Bind a function to an instance.
 *
 *  This Function object extension method creates a bound method similar
 *  to those in Python.  This means that the 'this' object will point
 *  to the instance you want.  See
 *  <a href='https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/bind'>MDC's bind() documentation</a> and
 *  <a href='http://benjamin.smedbergs.us/blog/2007-01-03/bound-functions-and-function-imports-in-javascript/'>Bound Functions and Function Imports in JavaScript</a>
 *  for a complete explanation.
 *
 *  This extension already exists in some browsers (namely, Firefox 3), but
 *  we provide it to support those that don't.
 *
 *  Parameters:
 *    (Object) obj - The object that will become 'this' in the bound function.
 *    (Object) argN - An option argument that will be prepended to the
 *      arguments given for the function call
 *
 *  Returns:
 *    The bound function.
 */
if (!Function.prototype.bind) {
    Function.prototype.bind = function (obj /*, arg1, arg2, ... */)
    {
        var func = this;
        var _slice = Array.prototype.slice;
        var _concat = Array.prototype.concat;
        var _args = _slice.call(arguments, 1);

        return function () {
            return func.apply(obj ? obj : this,
                              _concat.call(_args,
                                           _slice.call(arguments, 0)));
        };
    };
}

/** PrivateFunction: Array.isArray
 *  This is a polyfill for the ES5 Array.isArray method.
 */
if (!Array.isArray) {
    Array.isArray = function(arg) {
        return Object.prototype.toString.call(arg) === '[object Array]';
    };
}

/** PrivateFunction: Array.prototype.indexOf
 *  Return the index of an object in an array.
 *
 *  This function is not supplied by some JavaScript implementations, so
 *  we provide it if it is missing.  This code is from:
 *  http://developer.mozilla.org/En/Core_JavaScript_1.5_Reference:Objects:Array:indexOf
 *
 *  Parameters:
 *    (Object) elt - The object to look for.
 *    (Integer) from - The index from which to start looking. (optional).
 *
 *  Returns:
 *    The index of elt in the array or -1 if not found.
 */
if (!Array.prototype.indexOf)
    {
        Array.prototype.indexOf = function(elt /*, from*/)
        {
            var len = this.length;

            var from = Number(arguments[1]) || 0;
            from = (from < 0) ? Math.ceil(from) : Math.floor(from);
            if (from < 0) {
                from += len;
            }

            for (; from < len; from++) {
                if (from in this && this[from] === elt) {
                    return from;
                }
            }

            return -1;
        };
    }
;
define("strophe-polyfill", function(){});

/*
    This program is distributed under the terms of the MIT license.
    Please see the LICENSE file for details.

    Copyright 2006-2008, OGG, LLC
*/

/* jshint undef: true, unused: true:, noarg: true, latedef: true */
/*global define, document, window, setTimeout, clearTimeout, console, ActiveXObject, DOMParser */

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('strophe-core',[
            'strophe-sha1',
            'strophe-base64',
            'strophe-md5',
            "strophe-polyfill"
        ], function () {
            return factory.apply(this, arguments);
        });
    } else {
        // Browser globals
        var o = factory(root.SHA1, root.Base64, root.MD5);
        window.Strophe =        o.Strophe;
        window.$build =         o.$build;
        window.$iq =            o.$iq;
        window.$msg =           o.$msg;
        window.$pres =          o.$pres;
        window.SHA1 =           o.SHA1;
        window.Base64 =         o.Base64;
        window.MD5 =            o.MD5;
        window.b64_hmac_sha1 =  o.SHA1.b64_hmac_sha1;
        window.b64_sha1 =       o.SHA1.b64_sha1;
        window.str_hmac_sha1 =  o.SHA1.str_hmac_sha1;
        window.str_sha1 =       o.SHA1.str_sha1;
    }
}(this, function (SHA1, Base64, MD5) {

var Strophe;

/** Function: $build
 *  Create a Strophe.Builder.
 *  This is an alias for 'new Strophe.Builder(name, attrs)'.
 *
 *  Parameters:
 *    (String) name - The root element name.
 *    (Object) attrs - The attributes for the root element in object notation.
 *
 *  Returns:
 *    A new Strophe.Builder object.
 */
function $build(name, attrs) { return new Strophe.Builder(name, attrs); }

/** Function: $msg
 *  Create a Strophe.Builder with a <message/> element as the root.
 *
 *  Parmaeters:
 *    (Object) attrs - The <message/> element attributes in object notation.
 *
 *  Returns:
 *    A new Strophe.Builder object.
 */
function $msg(attrs) { return new Strophe.Builder("message", attrs); }

/** Function: $iq
 *  Create a Strophe.Builder with an <iq/> element as the root.
 *
 *  Parameters:
 *    (Object) attrs - The <iq/> element attributes in object notation.
 *
 *  Returns:
 *    A new Strophe.Builder object.
 */
function $iq(attrs) { return new Strophe.Builder("iq", attrs); }

/** Function: $pres
 *  Create a Strophe.Builder with a <presence/> element as the root.
 *
 *  Parameters:
 *    (Object) attrs - The <presence/> element attributes in object notation.
 *
 *  Returns:
 *    A new Strophe.Builder object.
 */
function $pres(attrs) { return new Strophe.Builder("presence", attrs); }

/** Class: Strophe
 *  An object container for all Strophe library functions.
 *
 *  This class is just a container for all the objects and constants
 *  used in the library.  It is not meant to be instantiated, but to
 *  provide a namespace for library objects, constants, and functions.
 */
Strophe = {
    /** Constant: VERSION
     *  The version of the Strophe library. Unreleased builds will have
     *  a version of head-HASH where HASH is a partial revision.
     */
    VERSION: "@VERSION@",

    /** Constants: XMPP Namespace Constants
     *  Common namespace constants from the XMPP RFCs and XEPs.
     *
     *  NS.HTTPBIND - HTTP BIND namespace from XEP 124.
     *  NS.BOSH - BOSH namespace from XEP 206.
     *  NS.CLIENT - Main XMPP client namespace.
     *  NS.AUTH - Legacy authentication namespace.
     *  NS.ROSTER - Roster operations namespace.
     *  NS.PROFILE - Profile namespace.
     *  NS.DISCO_INFO - Service discovery info namespace from XEP 30.
     *  NS.DISCO_ITEMS - Service discovery items namespace from XEP 30.
     *  NS.MUC - Multi-User Chat namespace from XEP 45.
     *  NS.SASL - XMPP SASL namespace from RFC 3920.
     *  NS.STREAM - XMPP Streams namespace from RFC 3920.
     *  NS.BIND - XMPP Binding namespace from RFC 3920.
     *  NS.SESSION - XMPP Session namespace from RFC 3920.
     *  NS.XHTML_IM - XHTML-IM namespace from XEP 71.
     *  NS.XHTML - XHTML body namespace from XEP 71.
     */
    NS: {
        HTTPBIND: "http://jabber.org/protocol/httpbind",
        BOSH: "urn:xmpp:xbosh",
        CLIENT: "jabber:client",
        AUTH: "jabber:iq:auth",
        ROSTER: "jabber:iq:roster",
        PROFILE: "jabber:iq:profile",
        DISCO_INFO: "http://jabber.org/protocol/disco#info",
        DISCO_ITEMS: "http://jabber.org/protocol/disco#items",
        MUC: "http://jabber.org/protocol/muc",
        SASL: "urn:ietf:params:xml:ns:xmpp-sasl",
        STREAM: "http://etherx.jabber.org/streams",
        FRAMING: "urn:ietf:params:xml:ns:xmpp-framing",
        BIND: "urn:ietf:params:xml:ns:xmpp-bind",
        SESSION: "urn:ietf:params:xml:ns:xmpp-session",
        VERSION: "jabber:iq:version",
        STANZAS: "urn:ietf:params:xml:ns:xmpp-stanzas",
        XHTML_IM: "http://jabber.org/protocol/xhtml-im",
        XHTML: "http://www.w3.org/1999/xhtml"
    },


    /** Constants: XHTML_IM Namespace
     *  contains allowed tags, tag attributes, and css properties.
     *  Used in the createHtml function to filter incoming html into the allowed XHTML-IM subset.
     *  See http://xmpp.org/extensions/xep-0071.html#profile-summary for the list of recommended
     *  allowed tags and their attributes.
     */
    XHTML: {
                tags: ['a','blockquote','br','cite','em','img','li','ol','p','span','strong','ul','body'],
                attributes: {
                        'a':          ['href'],
                        'blockquote': ['style'],
                        'br':         [],
                        'cite':       ['style'],
                        'em':         [],
                        'img':        ['src', 'alt', 'style', 'height', 'width'],
                        'li':         ['style'],
                        'ol':         ['style'],
                        'p':          ['style'],
                        'span':       ['style'],
                        'strong':     [],
                        'ul':         ['style'],
                        'body':       []
                },
                css: ['background-color','color','font-family','font-size','font-style','font-weight','margin-left','margin-right','text-align','text-decoration'],
                validTag: function(tag)
                {
                        for(var i = 0; i < Strophe.XHTML.tags.length; i++) {
                                if(tag == Strophe.XHTML.tags[i]) {
                                        return true;
                                }
                        }
                        return false;
                },
                validAttribute: function(tag, attribute)
                {
                        if(typeof Strophe.XHTML.attributes[tag] !== 'undefined' && Strophe.XHTML.attributes[tag].length > 0) {
                                for(var i = 0; i < Strophe.XHTML.attributes[tag].length; i++) {
                                        if(attribute == Strophe.XHTML.attributes[tag][i]) {
                                                return true;
                                        }
                                }
                        }
                        return false;
                },
                validCSS: function(style)
                {
                        for(var i = 0; i < Strophe.XHTML.css.length; i++) {
                                if(style == Strophe.XHTML.css[i]) {
                                        return true;
                                }
                        }
                        return false;
                }
    },

    /** Constants: Connection Status Constants
     *  Connection status constants for use by the connection handler
     *  callback.
     *
     *  Status.ERROR - An error has occurred
     *  Status.CONNECTING - The connection is currently being made
     *  Status.CONNFAIL - The connection attempt failed
     *  Status.AUTHENTICATING - The connection is authenticating
     *  Status.AUTHFAIL - The authentication attempt failed
     *  Status.CONNECTED - The connection has succeeded
     *  Status.DISCONNECTED - The connection has been terminated
     *  Status.DISCONNECTING - The connection is currently being terminated
     *  Status.ATTACHED - The connection has been attached
     */
    Status: {
        ERROR: 0,
        CONNECTING: 1,
        CONNFAIL: 2,
        AUTHENTICATING: 3,
        AUTHFAIL: 4,
        CONNECTED: 5,
        DISCONNECTED: 6,
        DISCONNECTING: 7,
        ATTACHED: 8,
        REDIRECT: 9
    },

    /** Constants: Log Level Constants
     *  Logging level indicators.
     *
     *  LogLevel.DEBUG - Debug output
     *  LogLevel.INFO - Informational output
     *  LogLevel.WARN - Warnings
     *  LogLevel.ERROR - Errors
     *  LogLevel.FATAL - Fatal errors
     */
    LogLevel: {
        DEBUG: 0,
        INFO: 1,
        WARN: 2,
        ERROR: 3,
        FATAL: 4
    },

    /** PrivateConstants: DOM Element Type Constants
     *  DOM element types.
     *
     *  ElementType.NORMAL - Normal element.
     *  ElementType.TEXT - Text data element.
     *  ElementType.FRAGMENT - XHTML fragment element.
     */
    ElementType: {
        NORMAL: 1,
        TEXT: 3,
        CDATA: 4,
        FRAGMENT: 11
    },

    /** PrivateConstants: Timeout Values
     *  Timeout values for error states.  These values are in seconds.
     *  These should not be changed unless you know exactly what you are
     *  doing.
     *
     *  TIMEOUT - Timeout multiplier. A waiting request will be considered
     *      failed after Math.floor(TIMEOUT * wait) seconds have elapsed.
     *      This defaults to 1.1, and with default wait, 66 seconds.
     *  SECONDARY_TIMEOUT - Secondary timeout multiplier. In cases where
     *      Strophe can detect early failure, it will consider the request
     *      failed if it doesn't return after
     *      Math.floor(SECONDARY_TIMEOUT * wait) seconds have elapsed.
     *      This defaults to 0.1, and with default wait, 6 seconds.
     */
    TIMEOUT: 1.1,
    SECONDARY_TIMEOUT: 0.1,

    /** Function: addNamespace
     *  This function is used to extend the current namespaces in
     *  Strophe.NS.  It takes a key and a value with the key being the
     *  name of the new namespace, with its actual value.
     *  For example:
     *  Strophe.addNamespace('PUBSUB', "http://jabber.org/protocol/pubsub");
     *
     *  Parameters:
     *    (String) name - The name under which the namespace will be
     *      referenced under Strophe.NS
     *    (String) value - The actual namespace.
     */
    addNamespace: function (name, value)
    {
      Strophe.NS[name] = value;
    },

    /** Function: forEachChild
     *  Map a function over some or all child elements of a given element.
     *
     *  This is a small convenience function for mapping a function over
     *  some or all of the children of an element.  If elemName is null, all
     *  children will be passed to the function, otherwise only children
     *  whose tag names match elemName will be passed.
     *
     *  Parameters:
     *    (XMLElement) elem - The element to operate on.
     *    (String) elemName - The child element tag name filter.
     *    (Function) func - The function to apply to each child.  This
     *      function should take a single argument, a DOM element.
     */
    forEachChild: function (elem, elemName, func)
    {
        var i, childNode;

        for (i = 0; i < elem.childNodes.length; i++) {
            childNode = elem.childNodes[i];
            if (childNode.nodeType == Strophe.ElementType.NORMAL &&
                (!elemName || this.isTagEqual(childNode, elemName))) {
                func(childNode);
            }
        }
    },

    /** Function: isTagEqual
     *  Compare an element's tag name with a string.
     *
     *  This function is case sensitive.
     *
     *  Parameters:
     *    (XMLElement) el - A DOM element.
     *    (String) name - The element name.
     *
     *  Returns:
     *    true if the element's tag name matches _el_, and false
     *    otherwise.
     */
    isTagEqual: function (el, name)
    {
        return el.tagName == name;
    },

    /** PrivateVariable: _xmlGenerator
     *  _Private_ variable that caches a DOM document to
     *  generate elements.
     */
    _xmlGenerator: null,

    /** PrivateFunction: _makeGenerator
     *  _Private_ function that creates a dummy XML DOM document to serve as
     *  an element and text node generator.
     */
    _makeGenerator: function () {
        var doc;

        // IE9 does implement createDocument(); however, using it will cause the browser to leak memory on page unload.
        // Here, we test for presence of createDocument() plus IE's proprietary documentMode attribute, which would be
                // less than 10 in the case of IE9 and below.
        if (document.implementation.createDocument === undefined ||
                        document.implementation.createDocument && document.documentMode && document.documentMode < 10) {
            doc = this._getIEXmlDom();
            doc.appendChild(doc.createElement('strophe'));
        } else {
            doc = document.implementation
                .createDocument('jabber:client', 'strophe', null);
        }

        return doc;
    },

    /** Function: xmlGenerator
     *  Get the DOM document to generate elements.
     *
     *  Returns:
     *    The currently used DOM document.
     */
    xmlGenerator: function () {
        if (!Strophe._xmlGenerator) {
            Strophe._xmlGenerator = Strophe._makeGenerator();
        }
        return Strophe._xmlGenerator;
    },

    /** PrivateFunction: _getIEXmlDom
     *  Gets IE xml doc object
     *
     *  Returns:
     *    A Microsoft XML DOM Object
     *  See Also:
     *    http://msdn.microsoft.com/en-us/library/ms757837%28VS.85%29.aspx
     */
    _getIEXmlDom : function() {
        var doc = null;
        var docStrings = [
            "Msxml2.DOMDocument.6.0",
            "Msxml2.DOMDocument.5.0",
            "Msxml2.DOMDocument.4.0",
            "MSXML2.DOMDocument.3.0",
            "MSXML2.DOMDocument",
            "MSXML.DOMDocument",
            "Microsoft.XMLDOM"
        ];

        for (var d = 0; d < docStrings.length; d++) {
            if (doc === null) {
                try {
                    doc = new ActiveXObject(docStrings[d]);
                } catch (e) {
                    doc = null;
                }
            } else {
                break;
            }
        }

        return doc;
    },

    /** Function: xmlElement
     *  Create an XML DOM element.
     *
     *  This function creates an XML DOM element correctly across all
     *  implementations. Note that these are not HTML DOM elements, which
     *  aren't appropriate for XMPP stanzas.
     *
     *  Parameters:
     *    (String) name - The name for the element.
     *    (Array|Object) attrs - An optional array or object containing
     *      key/value pairs to use as element attributes. The object should
     *      be in the format {'key': 'value'} or {key: 'value'}. The array
     *      should have the format [['key1', 'value1'], ['key2', 'value2']].
     *    (String) text - The text child data for the element.
     *
     *  Returns:
     *    A new XML DOM element.
     */
    xmlElement: function (name)
    {
        if (!name) { return null; }

        var node = Strophe.xmlGenerator().createElement(name);

        // FIXME: this should throw errors if args are the wrong type or
        // there are more than two optional args
        var a, i, k;
        for (a = 1; a < arguments.length; a++) {
            if (!arguments[a]) { continue; }
            if (typeof(arguments[a]) == "string" ||
                typeof(arguments[a]) == "number") {
                node.appendChild(Strophe.xmlTextNode(arguments[a]));
            } else if (typeof(arguments[a]) == "object" &&
                       typeof(arguments[a].sort) == "function") {
                for (i = 0; i < arguments[a].length; i++) {
                    if (typeof(arguments[a][i]) == "object" &&
                        typeof(arguments[a][i].sort) == "function") {
                        node.setAttribute(arguments[a][i][0],
                                          arguments[a][i][1]);
                    }
                }
            } else if (typeof(arguments[a]) == "object") {
                for (k in arguments[a]) {
                    if (arguments[a].hasOwnProperty(k)) {
                        node.setAttribute(k, arguments[a][k]);
                    }
                }
            }
        }

        return node;
    },

    /*  Function: xmlescape
     *  Excapes invalid xml characters.
     *
     *  Parameters:
     *     (String) text - text to escape.
     *
     *  Returns:
     *      Escaped text.
     */
    xmlescape: function(text)
    {
        text = text.replace(/\&/g, "&amp;");
        text = text.replace(/</g,  "&lt;");
        text = text.replace(/>/g,  "&gt;");
        text = text.replace(/'/g,  "&apos;");
        text = text.replace(/"/g,  "&quot;");
        return text;
    },

    /*  Function: xmlunescape
    *  Unexcapes invalid xml characters.
    *
    *  Parameters:
    *     (String) text - text to unescape.
    *
    *  Returns:
    *      Unescaped text.
    */
    xmlunescape: function(text)
    {
        text = text.replace(/\&amp;/g, "&");
        text = text.replace(/&lt;/g,  "<");
        text = text.replace(/&gt;/g,  ">");
        text = text.replace(/&apos;/g,  "'");
        text = text.replace(/&quot;/g,  "\"");
        return text;
    },

    /** Function: xmlTextNode
     *  Creates an XML DOM text node.
     *
     *  Provides a cross implementation version of document.createTextNode.
     *
     *  Parameters:
     *    (String) text - The content of the text node.
     *
     *  Returns:
     *    A new XML DOM text node.
     */
    xmlTextNode: function (text)
    {
        return Strophe.xmlGenerator().createTextNode(text);
    },

    /** Function: xmlHtmlNode
     *  Creates an XML DOM html node.
     *
     *  Parameters:
     *    (String) html - The content of the html node.
     *
     *  Returns:
     *    A new XML DOM text node.
     */
    xmlHtmlNode: function (html)
    {
        var node;
        //ensure text is escaped
        if (window.DOMParser) {
            var parser = new DOMParser();
            node = parser.parseFromString(html, "text/xml");
        } else {
            node = new ActiveXObject("Microsoft.XMLDOM");
            node.async="false";
            node.loadXML(html);
        }
        return node;
    },

    /** Function: getText
     *  Get the concatenation of all text children of an element.
     *
     *  Parameters:
     *    (XMLElement) elem - A DOM element.
     *
     *  Returns:
     *    A String with the concatenated text of all text element children.
     */
    getText: function (elem)
    {
        if (!elem) { return null; }

        var str = "";
        if (elem.childNodes.length === 0 && elem.nodeType ==
            Strophe.ElementType.TEXT) {
            str += elem.nodeValue;
        }

        for (var i = 0; i < elem.childNodes.length; i++) {
            if (elem.childNodes[i].nodeType == Strophe.ElementType.TEXT) {
                str += elem.childNodes[i].nodeValue;
            }
        }

        return Strophe.xmlescape(str);
    },

    /** Function: copyElement
     *  Copy an XML DOM element.
     *
     *  This function copies a DOM element and all its descendants and returns
     *  the new copy.
     *
     *  Parameters:
     *    (XMLElement) elem - A DOM element.
     *
     *  Returns:
     *    A new, copied DOM element tree.
     */
    copyElement: function (elem)
    {
        var i, el;
        if (elem.nodeType == Strophe.ElementType.NORMAL) {
            el = Strophe.xmlElement(elem.tagName);

            for (i = 0; i < elem.attributes.length; i++) {
                el.setAttribute(elem.attributes[i].nodeName,
                                elem.attributes[i].value);
            }

            for (i = 0; i < elem.childNodes.length; i++) {
                el.appendChild(Strophe.copyElement(elem.childNodes[i]));
            }
        } else if (elem.nodeType == Strophe.ElementType.TEXT) {
            el = Strophe.xmlGenerator().createTextNode(elem.nodeValue);
        }

        return el;
    },


    /** Function: createHtml
     *  Copy an HTML DOM element into an XML DOM.
     *
     *  This function copies a DOM element and all its descendants and returns
     *  the new copy.
     *
     *  Parameters:
     *    (HTMLElement) elem - A DOM element.
     *
     *  Returns:
     *    A new, copied DOM element tree.
     */
    createHtml: function (elem)
    {
        var i, el, j, tag, attribute, value, css, cssAttrs, attr, cssName, cssValue;
        if (elem.nodeType == Strophe.ElementType.NORMAL) {
            tag = elem.nodeName;
            if(Strophe.XHTML.validTag(tag)) {
                try {
                    el = Strophe.xmlElement(tag);
                    for(i = 0; i < Strophe.XHTML.attributes[tag].length; i++) {
                        attribute = Strophe.XHTML.attributes[tag][i];
                        value = elem.getAttribute(attribute);
                        if(typeof value == 'undefined' || value === null || value === '' || value === false || value === 0) {
                            continue;
                        }
                        if(attribute == 'style' && typeof value == 'object') {
                            if(typeof value.cssText != 'undefined') {
                                value = value.cssText; // we're dealing with IE, need to get CSS out
                            }
                        }
                        // filter out invalid css styles
                        if(attribute == 'style') {
                            css = [];
                            cssAttrs = value.split(';');
                            for(j = 0; j < cssAttrs.length; j++) {
                                attr = cssAttrs[j].split(':');
                                cssName = attr[0].replace(/^\s*/, "").replace(/\s*$/, "").toLowerCase();
                                if(Strophe.XHTML.validCSS(cssName)) {
                                    cssValue = attr[1].replace(/^\s*/, "").replace(/\s*$/, "");
                                    css.push(cssName + ': ' + cssValue);
                                }
                            }
                            if(css.length > 0) {
                                value = css.join('; ');
                                el.setAttribute(attribute, value);
                            }
                        } else {
                            el.setAttribute(attribute, value);
                        }
                    }

                    for (i = 0; i < elem.childNodes.length; i++) {
                        el.appendChild(Strophe.createHtml(elem.childNodes[i]));
                    }
                } catch(e) { // invalid elements
                  el = Strophe.xmlTextNode('');
                }
            } else {
                el = Strophe.xmlGenerator().createDocumentFragment();
                for (i = 0; i < elem.childNodes.length; i++) {
                    el.appendChild(Strophe.createHtml(elem.childNodes[i]));
                }
            }
        } else if (elem.nodeType == Strophe.ElementType.FRAGMENT) {
            el = Strophe.xmlGenerator().createDocumentFragment();
            for (i = 0; i < elem.childNodes.length; i++) {
                el.appendChild(Strophe.createHtml(elem.childNodes[i]));
            }
        } else if (elem.nodeType == Strophe.ElementType.TEXT) {
            el = Strophe.xmlTextNode(elem.nodeValue);
        }

        return el;
    },

    /** Function: escapeNode
     *  Escape the node part (also called local part) of a JID.
     *
     *  Parameters:
     *    (String) node - A node (or local part).
     *
     *  Returns:
     *    An escaped node (or local part).
     */
    escapeNode: function (node)
    {
        if (typeof node !== "string") { return node; }
        return node.replace(/^\s+|\s+$/g, '')
            .replace(/\\/g,  "\\5c")
            .replace(/ /g,   "\\20")
            .replace(/\"/g,  "\\22")
            .replace(/\&/g,  "\\26")
            .replace(/\'/g,  "\\27")
            .replace(/\//g,  "\\2f")
            .replace(/:/g,   "\\3a")
            .replace(/</g,   "\\3c")
            .replace(/>/g,   "\\3e")
            .replace(/@/g,   "\\40");
    },

    /** Function: unescapeNode
     *  Unescape a node part (also called local part) of a JID.
     *
     *  Parameters:
     *    (String) node - A node (or local part).
     *
     *  Returns:
     *    An unescaped node (or local part).
     */
    unescapeNode: function (node)
    {
        if (typeof node !== "string") { return node; }
        return node.replace(/\\20/g, " ")
            .replace(/\\22/g, '"')
            .replace(/\\26/g, "&")
            .replace(/\\27/g, "'")
            .replace(/\\2f/g, "/")
            .replace(/\\3a/g, ":")
            .replace(/\\3c/g, "<")
            .replace(/\\3e/g, ">")
            .replace(/\\40/g, "@")
            .replace(/\\5c/g, "\\");
    },

    /** Function: getNodeFromJid
     *  Get the node portion of a JID String.
     *
     *  Parameters:
     *    (String) jid - A JID.
     *
     *  Returns:
     *    A String containing the node.
     */
    getNodeFromJid: function (jid)
    {
        if (jid.indexOf("@") < 0) { return null; }
        return jid.split("@")[0];
    },

    /** Function: getDomainFromJid
     *  Get the domain portion of a JID String.
     *
     *  Parameters:
     *    (String) jid - A JID.
     *
     *  Returns:
     *    A String containing the domain.
     */
    getDomainFromJid: function (jid)
    {
        var bare = Strophe.getBareJidFromJid(jid);
        if (bare.indexOf("@") < 0) {
            return bare;
        } else {
            var parts = bare.split("@");
            parts.splice(0, 1);
            return parts.join('@');
        }
    },

    /** Function: getResourceFromJid
     *  Get the resource portion of a JID String.
     *
     *  Parameters:
     *    (String) jid - A JID.
     *
     *  Returns:
     *    A String containing the resource.
     */
    getResourceFromJid: function (jid)
    {
        var s = jid.split("/");
        if (s.length < 2) { return null; }
        s.splice(0, 1);
        return s.join('/');
    },

    /** Function: getBareJidFromJid
     *  Get the bare JID from a JID String.
     *
     *  Parameters:
     *    (String) jid - A JID.
     *
     *  Returns:
     *    A String containing the bare JID.
     */
    getBareJidFromJid: function (jid)
    {
        return jid ? jid.split("/")[0] : null;
    },

    /** Function: log
     *  User overrideable logging function.
     *
     *  This function is called whenever the Strophe library calls any
     *  of the logging functions.  The default implementation of this
     *  function does nothing.  If client code wishes to handle the logging
     *  messages, it should override this with
     *  > Strophe.log = function (level, msg) {
     *  >   (user code here)
     *  > };
     *
     *  Please note that data sent and received over the wire is logged
     *  via Strophe.Connection.rawInput() and Strophe.Connection.rawOutput().
     *
     *  The different levels and their meanings are
     *
     *    DEBUG - Messages useful for debugging purposes.
     *    INFO - Informational messages.  This is mostly information like
     *      'disconnect was called' or 'SASL auth succeeded'.
     *    WARN - Warnings about potential problems.  This is mostly used
     *      to report transient connection errors like request timeouts.
     *    ERROR - Some error occurred.
     *    FATAL - A non-recoverable fatal error occurred.
     *
     *  Parameters:
     *    (Integer) level - The log level of the log message.  This will
     *      be one of the values in Strophe.LogLevel.
     *    (String) msg - The log message.
     */
    /* jshint ignore:start */
    log: function (level, msg)
    {
        return;
    },
    /* jshint ignore:end */

    /** Function: debug
     *  Log a message at the Strophe.LogLevel.DEBUG level.
     *
     *  Parameters:
     *    (String) msg - The log message.
     */
    debug: function(msg)
    {
        this.log(this.LogLevel.DEBUG, msg);
    },

    /** Function: info
     *  Log a message at the Strophe.LogLevel.INFO level.
     *
     *  Parameters:
     *    (String) msg - The log message.
     */
    info: function (msg)
    {
        this.log(this.LogLevel.INFO, msg);
    },

    /** Function: warn
     *  Log a message at the Strophe.LogLevel.WARN level.
     *
     *  Parameters:
     *    (String) msg - The log message.
     */
    warn: function (msg)
    {
        this.log(this.LogLevel.WARN, msg);
    },

    /** Function: error
     *  Log a message at the Strophe.LogLevel.ERROR level.
     *
     *  Parameters:
     *    (String) msg - The log message.
     */
    error: function (msg)
    {
        this.log(this.LogLevel.ERROR, msg);
    },

    /** Function: fatal
     *  Log a message at the Strophe.LogLevel.FATAL level.
     *
     *  Parameters:
     *    (String) msg - The log message.
     */
    fatal: function (msg)
    {
        this.log(this.LogLevel.FATAL, msg);
    },

    /** Function: serialize
     *  Render a DOM element and all descendants to a String.
     *
     *  Parameters:
     *    (XMLElement) elem - A DOM element.
     *
     *  Returns:
     *    The serialized element tree as a String.
     */
    serialize: function (elem)
    {
        var result;

        if (!elem) { return null; }

        if (typeof(elem.tree) === "function") {
            elem = elem.tree();
        }

        var nodeName = elem.nodeName;
        var i, child;

        if (elem.getAttribute("_realname")) {
            nodeName = elem.getAttribute("_realname");
        }

        result = "<" + nodeName;
        for (i = 0; i < elem.attributes.length; i++) {
               if(elem.attributes[i].nodeName != "_realname") {
                 result += " " + elem.attributes[i].nodeName +
                "='" + elem.attributes[i].value
                    .replace(/&/g, "&amp;")
                       .replace(/\'/g, "&apos;")
                       .replace(/>/g, "&gt;")
                       .replace(/</g, "&lt;") + "'";
               }
        }

        if (elem.childNodes.length > 0) {
            result += ">";
            for (i = 0; i < elem.childNodes.length; i++) {
                child = elem.childNodes[i];
                switch( child.nodeType ){
                  case Strophe.ElementType.NORMAL:
                    // normal element, so recurse
                    result += Strophe.serialize(child);
                    break;
                  case Strophe.ElementType.TEXT:
                    // text element to escape values
                    result += Strophe.xmlescape(child.nodeValue);
                    break;
                  case Strophe.ElementType.CDATA:
                    // cdata section so don't escape values
                    result += "<![CDATA["+child.nodeValue+"]]>";
                }
            }
            result += "</" + nodeName + ">";
        } else {
            result += "/>";
        }

        return result;
    },

    /** PrivateVariable: _requestId
     *  _Private_ variable that keeps track of the request ids for
     *  connections.
     */
    _requestId: 0,

    /** PrivateVariable: Strophe.connectionPlugins
     *  _Private_ variable Used to store plugin names that need
     *  initialization on Strophe.Connection construction.
     */
    _connectionPlugins: {},

    /** Function: addConnectionPlugin
     *  Extends the Strophe.Connection object with the given plugin.
     *
     *  Parameters:
     *    (String) name - The name of the extension.
     *    (Object) ptype - The plugin's prototype.
     */
    addConnectionPlugin: function (name, ptype)
    {
        Strophe._connectionPlugins[name] = ptype;
    }
};

/** Class: Strophe.Builder
 *  XML DOM builder.
 *
 *  This object provides an interface similar to JQuery but for building
 *  DOM element easily and rapidly.  All the functions except for toString()
 *  and tree() return the object, so calls can be chained.  Here's an
 *  example using the $iq() builder helper.
 *  > $iq({to: 'you', from: 'me', type: 'get', id: '1'})
 *  >     .c('query', {xmlns: 'strophe:example'})
 *  >     .c('example')
 *  >     .toString()
 *  The above generates this XML fragment
 *  > <iq to='you' from='me' type='get' id='1'>
 *  >   <query xmlns='strophe:example'>
 *  >     <example/>
 *  >   </query>
 *  > </iq>
 *  The corresponding DOM manipulations to get a similar fragment would be
 *  a lot more tedious and probably involve several helper variables.
 *
 *  Since adding children makes new operations operate on the child, up()
 *  is provided to traverse up the tree.  To add two children, do
 *  > builder.c('child1', ...).up().c('child2', ...)
 *  The next operation on the Builder will be relative to the second child.
 */

/** Constructor: Strophe.Builder
 *  Create a Strophe.Builder object.
 *
 *  The attributes should be passed in object notation.  For example
 *  > var b = new Builder('message', {to: 'you', from: 'me'});
 *  or
 *  > var b = new Builder('messsage', {'xml:lang': 'en'});
 *
 *  Parameters:
 *    (String) name - The name of the root element.
 *    (Object) attrs - The attributes for the root element in object notation.
 *
 *  Returns:
 *    A new Strophe.Builder.
 */
Strophe.Builder = function (name, attrs)
{
    // Set correct namespace for jabber:client elements
    if (name == "presence" || name == "message" || name == "iq") {
        if (attrs && !attrs.xmlns) {
            attrs.xmlns = Strophe.NS.CLIENT;
        } else if (!attrs) {
            attrs = {xmlns: Strophe.NS.CLIENT};
        }
    }

    // Holds the tree being built.
    this.nodeTree = Strophe.xmlElement(name, attrs);

    // Points to the current operation node.
    this.node = this.nodeTree;
};

Strophe.Builder.prototype = {
    /** Function: tree
     *  Return the DOM tree.
     *
     *  This function returns the current DOM tree as an element object.  This
     *  is suitable for passing to functions like Strophe.Connection.send().
     *
     *  Returns:
     *    The DOM tree as a element object.
     */
    tree: function ()
    {
        return this.nodeTree;
    },

    /** Function: toString
     *  Serialize the DOM tree to a String.
     *
     *  This function returns a string serialization of the current DOM
     *  tree.  It is often used internally to pass data to a
     *  Strophe.Request object.
     *
     *  Returns:
     *    The serialized DOM tree in a String.
     */
    toString: function ()
    {
        return Strophe.serialize(this.nodeTree);
    },

    /** Function: up
     *  Make the current parent element the new current element.
     *
     *  This function is often used after c() to traverse back up the tree.
     *  For example, to add two children to the same element
     *  > builder.c('child1', {}).up().c('child2', {});
     *
     *  Returns:
     *    The Stophe.Builder object.
     */
    up: function ()
    {
        this.node = this.node.parentNode;
        return this;
    },

    /** Function: attrs
     *  Add or modify attributes of the current element.
     *
     *  The attributes should be passed in object notation.  This function
     *  does not move the current element pointer.
     *
     *  Parameters:
     *    (Object) moreattrs - The attributes to add/modify in object notation.
     *
     *  Returns:
     *    The Strophe.Builder object.
     */
    attrs: function (moreattrs)
    {
        for (var k in moreattrs) {
            if (moreattrs.hasOwnProperty(k)) {
                this.node.setAttribute(k, moreattrs[k]);
            }
        }
        return this;
    },

    /** Function: c
     *  Add a child to the current element and make it the new current
     *  element.
     *
     *  This function moves the current element pointer to the child,
     *  unless text is provided.  If you need to add another child, it
     *  is necessary to use up() to go back to the parent in the tree.
     *
     *  Parameters:
     *    (String) name - The name of the child.
     *    (Object) attrs - The attributes of the child in object notation.
     *    (String) text - The text to add to the child.
     *
     *  Returns:
     *    The Strophe.Builder object.
     */
    c: function (name, attrs, text)
    {
        var child = Strophe.xmlElement(name, attrs, text);
        this.node.appendChild(child);
        if (!text) {
            this.node = child;
        }
        return this;
    },

    /** Function: cnode
     *  Add a child to the current element and make it the new current
     *  element.
     *
     *  This function is the same as c() except that instead of using a
     *  name and an attributes object to create the child it uses an
     *  existing DOM element object.
     *
     *  Parameters:
     *    (XMLElement) elem - A DOM element.
     *
     *  Returns:
     *    The Strophe.Builder object.
     */
    cnode: function (elem)
    {
        var impNode;
        var xmlGen = Strophe.xmlGenerator();
        try {
            impNode = (xmlGen.importNode !== undefined);
        }
        catch (e) {
            impNode = false;
        }
        var newElem = impNode ?
                      xmlGen.importNode(elem, true) :
                      Strophe.copyElement(elem);
        this.node.appendChild(newElem);
        this.node = newElem;
        return this;
    },

    /** Function: t
     *  Add a child text element.
     *
     *  This *does not* make the child the new current element since there
     *  are no children of text elements.
     *
     *  Parameters:
     *    (String) text - The text data to append to the current element.
     *
     *  Returns:
     *    The Strophe.Builder object.
     */
    t: function (text)
    {
        var child = Strophe.xmlTextNode(text);
        this.node.appendChild(child);
        return this;
    },

    /** Function: h
     *  Replace current element contents with the HTML passed in.
     *
     *  This *does not* make the child the new current element
     *
     *  Parameters:
     *    (String) html - The html to insert as contents of current element.
     *
     *  Returns:
     *    The Strophe.Builder object.
     */
    h: function (html)
    {
        var fragment = document.createElement('body');

        // force the browser to try and fix any invalid HTML tags
        fragment.innerHTML = html;

        // copy cleaned html into an xml dom
        var xhtml = Strophe.createHtml(fragment);

        while(xhtml.childNodes.length > 0) {
            this.node.appendChild(xhtml.childNodes[0]);
        }
        return this;
    }
};

/** PrivateClass: Strophe.Handler
 *  _Private_ helper class for managing stanza handlers.
 *
 *  A Strophe.Handler encapsulates a user provided callback function to be
 *  executed when matching stanzas are received by the connection.
 *  Handlers can be either one-off or persistant depending on their
 *  return value. Returning true will cause a Handler to remain active, and
 *  returning false will remove the Handler.
 *
 *  Users will not use Strophe.Handler objects directly, but instead they
 *  will use Strophe.Connection.addHandler() and
 *  Strophe.Connection.deleteHandler().
 */

/** PrivateConstructor: Strophe.Handler
 *  Create and initialize a new Strophe.Handler.
 *
 *  Parameters:
 *    (Function) handler - A function to be executed when the handler is run.
 *    (String) ns - The namespace to match.
 *    (String) name - The element name to match.
 *    (String) type - The element type to match.
 *    (String) id - The element id attribute to match.
 *    (String) from - The element from attribute to match.
 *    (Object) options - Handler options
 *
 *  Returns:
 *    A new Strophe.Handler object.
 */
Strophe.Handler = function (handler, ns, name, type, id, from, options)
{
    this.handler = handler;
    this.ns = ns;
    this.name = name;
    this.type = type;
    this.id = id;
    this.options = options || {matchBare: false};

    // default matchBare to false if undefined
    if (!this.options.matchBare) {
        this.options.matchBare = false;
    }

    if (this.options.matchBare) {
        this.from = from ? Strophe.getBareJidFromJid(from) : null;
    } else {
        this.from = from;
    }

    // whether the handler is a user handler or a system handler
    this.user = true;
};

Strophe.Handler.prototype = {
    /** PrivateFunction: isMatch
     *  Tests if a stanza matches the Strophe.Handler.
     *
     *  Parameters:
     *    (XMLElement) elem - The XML element to test.
     *
     *  Returns:
     *    true if the stanza matches and false otherwise.
     */
    isMatch: function (elem)
    {
        var nsMatch;
        var from = null;

        if (this.options.matchBare) {
            from = Strophe.getBareJidFromJid(elem.getAttribute('from'));
        } else {
            from = elem.getAttribute('from');
        }

        nsMatch = false;
        if (!this.ns) {
            nsMatch = true;
        } else {
            var that = this;
            Strophe.forEachChild(elem, null, function (elem) {
                if (elem.getAttribute("xmlns") == that.ns) {
                    nsMatch = true;
                }
            });

            nsMatch = nsMatch || elem.getAttribute("xmlns") == this.ns;
        }

        var elem_type = elem.getAttribute("type");
        if (nsMatch &&
            (!this.name || Strophe.isTagEqual(elem, this.name)) &&
            (!this.type || (Array.isArray(this.type) ? this.type.indexOf(elem_type) != -1 : elem_type == this.type)) &&
            (!this.id || elem.getAttribute("id") == this.id) &&
            (!this.from || from == this.from)) {
                return true;
        }

        return false;
    },

    /** PrivateFunction: run
     *  Run the callback on a matching stanza.
     *
     *  Parameters:
     *    (XMLElement) elem - The DOM element that triggered the
     *      Strophe.Handler.
     *
     *  Returns:
     *    A boolean indicating if the handler should remain active.
     */
    run: function (elem)
    {
        var result = null;
        try {
            result = this.handler(elem);
        } catch (e) {
            if (e.sourceURL) {
                Strophe.fatal("error: " + this.handler +
                              " " + e.sourceURL + ":" +
                              e.line + " - " + e.name + ": " + e.message);
            } else if (e.fileName) {
                if (typeof(console) != "undefined") {
                    console.trace();
                    console.error(this.handler, " - error - ", e, e.message);
                }
                Strophe.fatal("error: " + this.handler + " " +
                              e.fileName + ":" + e.lineNumber + " - " +
                              e.name + ": " + e.message);
            } else {
                Strophe.fatal("error: " + e.message + "\n" + e.stack);
            }

            throw e;
        }

        return result;
    },

    /** PrivateFunction: toString
     *  Get a String representation of the Strophe.Handler object.
     *
     *  Returns:
     *    A String.
     */
    toString: function ()
    {
        return "{Handler: " + this.handler + "(" + this.name + "," +
            this.id + "," + this.ns + ")}";
    }
};

/** PrivateClass: Strophe.TimedHandler
 *  _Private_ helper class for managing timed handlers.
 *
 *  A Strophe.TimedHandler encapsulates a user provided callback that
 *  should be called after a certain period of time or at regular
 *  intervals.  The return value of the callback determines whether the
 *  Strophe.TimedHandler will continue to fire.
 *
 *  Users will not use Strophe.TimedHandler objects directly, but instead
 *  they will use Strophe.Connection.addTimedHandler() and
 *  Strophe.Connection.deleteTimedHandler().
 */

/** PrivateConstructor: Strophe.TimedHandler
 *  Create and initialize a new Strophe.TimedHandler object.
 *
 *  Parameters:
 *    (Integer) period - The number of milliseconds to wait before the
 *      handler is called.
 *    (Function) handler - The callback to run when the handler fires.  This
 *      function should take no arguments.
 *
 *  Returns:
 *    A new Strophe.TimedHandler object.
 */
Strophe.TimedHandler = function (period, handler)
{
    this.period = period;
    this.handler = handler;

    this.lastCalled = new Date().getTime();
    this.user = true;
};

Strophe.TimedHandler.prototype = {
    /** PrivateFunction: run
     *  Run the callback for the Strophe.TimedHandler.
     *
     *  Returns:
     *    true if the Strophe.TimedHandler should be called again, and false
     *      otherwise.
     */
    run: function ()
    {
        this.lastCalled = new Date().getTime();
        return this.handler();
    },

    /** PrivateFunction: reset
     *  Reset the last called time for the Strophe.TimedHandler.
     */
    reset: function ()
    {
        this.lastCalled = new Date().getTime();
    },

    /** PrivateFunction: toString
     *  Get a string representation of the Strophe.TimedHandler object.
     *
     *  Returns:
     *    The string representation.
     */
    toString: function ()
    {
        return "{TimedHandler: " + this.handler + "(" + this.period +")}";
    }
};

/** Class: Strophe.Connection
 *  XMPP Connection manager.
 *
 *  This class is the main part of Strophe.  It manages a BOSH connection
 *  to an XMPP server and dispatches events to the user callbacks as
 *  data arrives.  It supports SASL PLAIN, SASL DIGEST-MD5, SASL SCRAM-SHA1
 *  and legacy authentication.
 *
 *  After creating a Strophe.Connection object, the user will typically
 *  call connect() with a user supplied callback to handle connection level
 *  events like authentication failure, disconnection, or connection
 *  complete.
 *
 *  The user will also have several event handlers defined by using
 *  addHandler() and addTimedHandler().  These will allow the user code to
 *  respond to interesting stanzas or do something periodically with the
 *  connection.  These handlers will be active once authentication is
 *  finished.
 *
 *  To send data to the connection, use send().
 */

/** Constructor: Strophe.Connection
 *  Create and initialize a Strophe.Connection object.
 *
 *  The transport-protocol for this connection will be chosen automatically
 *  based on the given service parameter. URLs starting with "ws://" or
 *  "wss://" will use WebSockets, URLs starting with "http://", "https://"
 *  or without a protocol will use BOSH.
 *
 *  To make Strophe connect to the current host you can leave out the protocol
 *  and host part and just pass the path, e.g.
 *
 *  > var conn = new Strophe.Connection("/http-bind/");
 *
 *  WebSocket options:
 *
 *  If you want to connect to the current host with a WebSocket connection you
 *  can tell Strophe to use WebSockets through a "protocol" attribute in the
 *  optional options parameter. Valid values are "ws" for WebSocket and "wss"
 *  for Secure WebSocket.
 *  So to connect to "wss://CURRENT_HOSTNAME/xmpp-websocket" you would call
 *
 *  > var conn = new Strophe.Connection("/xmpp-websocket/", {protocol: "wss"});
 *
 *  Note that relative URLs _NOT_ starting with a "/" will also include the path
 *  of the current site.
 *
 *  Also because downgrading security is not permitted by browsers, when using
 *  relative URLs both BOSH and WebSocket connections will use their secure
 *  variants if the current connection to the site is also secure (https).
 *
 *  BOSH options:
 *
 *  by adding "sync" to the options, you can control if requests will
 *  be made synchronously or not. The default behaviour is asynchronous.
 *  If you want to make requests synchronous, make "sync" evaluate to true:
 *  > var conn = new Strophe.Connection("/http-bind/", {sync: true});
 *  You can also toggle this on an already established connection:
 *  > conn.options.sync = true;
 *
 *
 *  Parameters:
 *    (String) service - The BOSH or WebSocket service URL.
 *    (Object) options - A hash of configuration options
 *
 *  Returns:
 *    A new Strophe.Connection object.
 */
Strophe.Connection = function (service, options)
{
    // The service URL
    this.service = service;

    // Configuration options
    this.options = options || {};
    var proto = this.options.protocol || "";

    // Select protocal based on service or options
    if (service.indexOf("ws:") === 0 || service.indexOf("wss:") === 0 ||
            proto.indexOf("ws") === 0) {
        this._proto = new Strophe.Websocket(this);
    } else {
        this._proto = new Strophe.Bosh(this);
    }
    /* The connected JID. */
    this.jid = "";
    /* the JIDs domain */
    this.domain = null;
    /* stream:features */
    this.features = null;

    // SASL
    this._sasl_data = {};
    this.do_session = false;
    this.do_bind = false;

    // handler lists
    this.timedHandlers = [];
    this.handlers = [];
    this.removeTimeds = [];
    this.removeHandlers = [];
    this.addTimeds = [];
    this.addHandlers = [];

    this._authentication = {};
    this._idleTimeout = null;
    this._disconnectTimeout = null;

    this.do_authentication = true;
    this.authenticated = false;
    this.disconnecting = false;
    this.connected = false;

    this.paused = false;

    this._data = [];
    this._uniqueId = 0;

    this._sasl_success_handler = null;
    this._sasl_failure_handler = null;
    this._sasl_challenge_handler = null;

    // Max retries before disconnecting
    this.maxRetries = 5;

    // setup onIdle callback every 1/10th of a second
    this._idleTimeout = setTimeout(this._onIdle.bind(this), 100);

    // initialize plugins
    for (var k in Strophe._connectionPlugins) {
        if (Strophe._connectionPlugins.hasOwnProperty(k)) {
            var ptype = Strophe._connectionPlugins[k];
            // jslint complaints about the below line, but this is fine
            var F = function () {}; // jshint ignore:line
            F.prototype = ptype;
            this[k] = new F();
            this[k].init(this);
        }
    }
};

Strophe.Connection.prototype = {
    /** Function: reset
     *  Reset the connection.
     *
     *  This function should be called after a connection is disconnected
     *  before that connection is reused.
     */
    reset: function ()
    {
        this._proto._reset();

        // SASL
        this.do_session = false;
        this.do_bind = false;

        // handler lists
        this.timedHandlers = [];
        this.handlers = [];
        this.removeTimeds = [];
        this.removeHandlers = [];
        this.addTimeds = [];
        this.addHandlers = [];
        this._authentication = {};

        this.authenticated = false;
        this.disconnecting = false;
        this.connected = false;

        this._data = [];
        this._requests = [];
        this._uniqueId = 0;
    },

    /** Function: pause
     *  Pause the request manager.
     *
     *  This will prevent Strophe from sending any more requests to the
     *  server.  This is very useful for temporarily pausing
     *  BOSH-Connections while a lot of send() calls are happening quickly.
     *  This causes Strophe to send the data in a single request, saving
     *  many request trips.
     */
    pause: function ()
    {
        this.paused = true;
    },

    /** Function: resume
     *  Resume the request manager.
     *
     *  This resumes after pause() has been called.
     */
    resume: function ()
    {
        this.paused = false;
    },

    /** Function: getUniqueId
     *  Generate a unique ID for use in <iq/> elements.
     *
     *  All <iq/> stanzas are required to have unique id attributes.  This
     *  function makes creating these easy.  Each connection instance has
     *  a counter which starts from zero, and the value of this counter
     *  plus a colon followed by the suffix becomes the unique id. If no
     *  suffix is supplied, the counter is used as the unique id.
     *
     *  Suffixes are used to make debugging easier when reading the stream
     *  data, and their use is recommended.  The counter resets to 0 for
     *  every new connection for the same reason.  For connections to the
     *  same server that authenticate the same way, all the ids should be
     *  the same, which makes it easy to see changes.  This is useful for
     *  automated testing as well.
     *
     *  Parameters:
     *    (String) suffix - A optional suffix to append to the id.
     *
     *  Returns:
     *    A unique string to be used for the id attribute.
     */
    getUniqueId: function (suffix)
    {
        if (typeof(suffix) == "string" || typeof(suffix) == "number") {
            return ++this._uniqueId + ":" + suffix;
        } else {
            return ++this._uniqueId + "";
        }
    },

    /** Function: connect
     *  Starts the connection process.
     *
     *  As the connection process proceeds, the user supplied callback will
     *  be triggered multiple times with status updates.  The callback
     *  should take two arguments - the status code and the error condition.
     *
     *  The status code will be one of the values in the Strophe.Status
     *  constants.  The error condition will be one of the conditions
     *  defined in RFC 3920 or the condition 'strophe-parsererror'.
     *
     *  The Parameters _wait_, _hold_ and _route_ are optional and only relevant
     *  for BOSH connections. Please see XEP 124 for a more detailed explanation
     *  of the optional parameters.
     *
     *  Parameters:
     *    (String) jid - The user's JID.  This may be a bare JID,
     *      or a full JID.  If a node is not supplied, SASL ANONYMOUS
     *      authentication will be attempted.
     *    (String) pass - The user's password.
     *    (Function) callback - The connect callback function.
     *    (Integer) wait - The optional HTTPBIND wait value.  This is the
     *      time the server will wait before returning an empty result for
     *      a request.  The default setting of 60 seconds is recommended.
     *    (Integer) hold - The optional HTTPBIND hold value.  This is the
     *      number of connections the server will hold at one time.  This
     *      should almost always be set to 1 (the default).
     *    (String) route - The optional route value.
     */
    connect: function (jid, pass, callback, wait, hold, route)
    {
        this.jid = jid;
        /** Variable: authzid
         *  Authorization identity.
         */
        this.authzid = Strophe.getBareJidFromJid(this.jid);
        /** Variable: authcid
         *  Authentication identity (User name).
         */
        this.authcid = Strophe.getNodeFromJid(this.jid);
        /** Variable: pass
         *  Authentication identity (User password).
         */
        this.pass = pass;
        /** Variable: servtype
         *  Digest MD5 compatibility.
         */
        this.servtype = "xmpp";
        this.connect_callback = callback;
        this.disconnecting = false;
        this.connected = false;
        this.authenticated = false;

        // parse jid for domain
        this.domain = Strophe.getDomainFromJid(this.jid);

        this._changeConnectStatus(Strophe.Status.CONNECTING, null);

        this._proto._connect(wait, hold, route);
    },

    /** Function: attach
     *  Attach to an already created and authenticated BOSH session.
     *
     *  This function is provided to allow Strophe to attach to BOSH
     *  sessions which have been created externally, perhaps by a Web
     *  application.  This is often used to support auto-login type features
     *  without putting user credentials into the page.
     *
     *  Parameters:
     *    (String) jid - The full JID that is bound by the session.
     *    (String) sid - The SID of the BOSH session.
     *    (String) rid - The current RID of the BOSH session.  This RID
     *      will be used by the next request.
     *    (Function) callback The connect callback function.
     *    (Integer) wait - The optional HTTPBIND wait value.  This is the
     *      time the server will wait before returning an empty result for
     *      a request.  The default setting of 60 seconds is recommended.
     *      Other settings will require tweaks to the Strophe.TIMEOUT value.
     *    (Integer) hold - The optional HTTPBIND hold value.  This is the
     *      number of connections the server will hold at one time.  This
     *      should almost always be set to 1 (the default).
     *    (Integer) wind - The optional HTTBIND window value.  This is the
     *      allowed range of request ids that are valid.  The default is 5.
     */
    attach: function (jid, sid, rid, callback, wait, hold, wind)
    {
        this._proto._attach(jid, sid, rid, callback, wait, hold, wind);
    },

    /** Function: xmlInput
     *  User overrideable function that receives XML data coming into the
     *  connection.
     *
     *  The default function does nothing.  User code can override this with
     *  > Strophe.Connection.xmlInput = function (elem) {
     *  >   (user code)
     *  > };
     *
     *  Due to limitations of current Browsers' XML-Parsers the opening and closing
     *  <stream> tag for WebSocket-Connoctions will be passed as selfclosing here.
     *
     *  BOSH-Connections will have all stanzas wrapped in a <body> tag. See
     *  <Strophe.Bosh.strip> if you want to strip this tag.
     *
     *  Parameters:
     *    (XMLElement) elem - The XML data received by the connection.
     */
    /* jshint unused:false */
    xmlInput: function (elem)
    {
        return;
    },
    /* jshint unused:true */

    /** Function: xmlOutput
     *  User overrideable function that receives XML data sent to the
     *  connection.
     *
     *  The default function does nothing.  User code can override this with
     *  > Strophe.Connection.xmlOutput = function (elem) {
     *  >   (user code)
     *  > };
     *
     *  Due to limitations of current Browsers' XML-Parsers the opening and closing
     *  <stream> tag for WebSocket-Connoctions will be passed as selfclosing here.
     *
     *  BOSH-Connections will have all stanzas wrapped in a <body> tag. See
     *  <Strophe.Bosh.strip> if you want to strip this tag.
     *
     *  Parameters:
     *    (XMLElement) elem - The XMLdata sent by the connection.
     */
    /* jshint unused:false */
    xmlOutput: function (elem)
    {
        return;
    },
    /* jshint unused:true */

    /** Function: rawInput
     *  User overrideable function that receives raw data coming into the
     *  connection.
     *
     *  The default function does nothing.  User code can override this with
     *  > Strophe.Connection.rawInput = function (data) {
     *  >   (user code)
     *  > };
     *
     *  Parameters:
     *    (String) data - The data received by the connection.
     */
    /* jshint unused:false */
    rawInput: function (data)
    {
        return;
    },
    /* jshint unused:true */

    /** Function: rawOutput
     *  User overrideable function that receives raw data sent to the
     *  connection.
     *
     *  The default function does nothing.  User code can override this with
     *  > Strophe.Connection.rawOutput = function (data) {
     *  >   (user code)
     *  > };
     *
     *  Parameters:
     *    (String) data - The data sent by the connection.
     */
    /* jshint unused:false */
    rawOutput: function (data)
    {
        return;
    },
    /* jshint unused:true */

    /** Function: send
     *  Send a stanza.
     *
     *  This function is called to push data onto the send queue to
     *  go out over the wire.  Whenever a request is sent to the BOSH
     *  server, all pending data is sent and the queue is flushed.
     *
     *  Parameters:
     *    (XMLElement |
     *     [XMLElement] |
     *     Strophe.Builder) elem - The stanza to send.
     */
    send: function (elem)
    {
        if (elem === null) { return ; }
        if (typeof(elem.sort) === "function") {
            for (var i = 0; i < elem.length; i++) {
                this._queueData(elem[i]);
            }
        } else if (typeof(elem.tree) === "function") {
            this._queueData(elem.tree());
        } else {
            this._queueData(elem);
        }

        this._proto._send();
    },

    /** Function: flush
     *  Immediately send any pending outgoing data.
     *
     *  Normally send() queues outgoing data until the next idle period
     *  (100ms), which optimizes network use in the common cases when
     *  several send()s are called in succession. flush() can be used to
     *  immediately send all pending data.
     */
    flush: function ()
    {
        // cancel the pending idle period and run the idle function
        // immediately
        clearTimeout(this._idleTimeout);
        this._onIdle();
    },

    /** Function: sendIQ
     *  Helper function to send IQ stanzas.
     *
     *  Parameters:
     *    (XMLElement) elem - The stanza to send.
     *    (Function) callback - The callback function for a successful request.
     *    (Function) errback - The callback function for a failed or timed
     *      out request.  On timeout, the stanza will be null.
     *    (Integer) timeout - The time specified in milliseconds for a
     *      timeout to occur.
     *
     *  Returns:
     *    The id used to send the IQ.
    */
    sendIQ: function(elem, callback, errback, timeout) {
        var timeoutHandler = null;
        var that = this;

        if (typeof(elem.tree) === "function") {
            elem = elem.tree();
        }
        var id = elem.getAttribute('id');

        // inject id if not found
        if (!id) {
            id = this.getUniqueId("sendIQ");
            elem.setAttribute("id", id);
        }

        var expectedFrom = elem.getAttribute("to");
        var fulljid = this.jid;

        var handler = this.addHandler(function (stanza) {
            // remove timeout handler if there is one
            if (timeoutHandler) {
                that.deleteTimedHandler(timeoutHandler);
            }

            var acceptable = false;
            var from = stanza.getAttribute("from");
            if (from === expectedFrom ||
               (expectedFrom === null &&
                   (from === Strophe.getBareJidFromJid(fulljid) ||
                    from === Strophe.getDomainFromJid(fulljid) ||
                    from === fulljid))) {
                acceptable = true;
            }

            if (!acceptable) {
                throw {
                    name: "StropheError",
                    message: "Got answer to IQ from wrong jid:" + from +
                             "\nExpected jid: " + expectedFrom
                };
            }

            var iqtype = stanza.getAttribute('type');
            if (iqtype == 'result') {
                if (callback) {
                    callback(stanza);
                }
            } else if (iqtype == 'error') {
                if (errback) {
                    errback(stanza);
                }
            } else {
                throw {
                    name: "StropheError",
                    message: "Got bad IQ type of " + iqtype
                };
            }
        }, null, 'iq', ['error', 'result'], id);

        // if timeout specified, setup timeout handler.
        if (timeout) {
            timeoutHandler = this.addTimedHandler(timeout, function () {
                // get rid of normal handler
                that.deleteHandler(handler);
                // call errback on timeout with null stanza
                if (errback) {
                    errback(null);
                }
                return false;
            });
        }
        this.send(elem);
        return id;
    },

    /** PrivateFunction: _queueData
     *  Queue outgoing data for later sending.  Also ensures that the data
     *  is a DOMElement.
     */
    _queueData: function (element) {
        if (element === null ||
            !element.tagName ||
            !element.childNodes) {
            throw {
                name: "StropheError",
                message: "Cannot queue non-DOMElement."
            };
        }

        this._data.push(element);
    },

    /** PrivateFunction: _sendRestart
     *  Send an xmpp:restart stanza.
     */
    _sendRestart: function ()
    {
        this._data.push("restart");

        this._proto._sendRestart();

        this._idleTimeout = setTimeout(this._onIdle.bind(this), 100);
    },

    /** Function: addTimedHandler
     *  Add a timed handler to the connection.
     *
     *  This function adds a timed handler.  The provided handler will
     *  be called every period milliseconds until it returns false,
     *  the connection is terminated, or the handler is removed.  Handlers
     *  that wish to continue being invoked should return true.
     *
     *  Because of method binding it is necessary to save the result of
     *  this function if you wish to remove a handler with
     *  deleteTimedHandler().
     *
     *  Note that user handlers are not active until authentication is
     *  successful.
     *
     *  Parameters:
     *    (Integer) period - The period of the handler.
     *    (Function) handler - The callback function.
     *
     *  Returns:
     *    A reference to the handler that can be used to remove it.
     */
    addTimedHandler: function (period, handler)
    {
        var thand = new Strophe.TimedHandler(period, handler);
        this.addTimeds.push(thand);
        return thand;
    },

    /** Function: deleteTimedHandler
     *  Delete a timed handler for a connection.
     *
     *  This function removes a timed handler from the connection.  The
     *  handRef parameter is *not* the function passed to addTimedHandler(),
     *  but is the reference returned from addTimedHandler().
     *
     *  Parameters:
     *    (Strophe.TimedHandler) handRef - The handler reference.
     */
    deleteTimedHandler: function (handRef)
    {
        // this must be done in the Idle loop so that we don't change
        // the handlers during iteration
        this.removeTimeds.push(handRef);
    },

    /** Function: addHandler
     *  Add a stanza handler for the connection.
     *
     *  This function adds a stanza handler to the connection.  The
     *  handler callback will be called for any stanza that matches
     *  the parameters.  Note that if multiple parameters are supplied,
     *  they must all match for the handler to be invoked.
     *
     *  The handler will receive the stanza that triggered it as its argument.
     *  *The handler should return true if it is to be invoked again;
     *  returning false will remove the handler after it returns.*
     *
     *  As a convenience, the ns parameters applies to the top level element
     *  and also any of its immediate children.  This is primarily to make
     *  matching /iq/query elements easy.
     *
     *  The options argument contains handler matching flags that affect how
     *  matches are determined. Currently the only flag is matchBare (a
     *  boolean). When matchBare is true, the from parameter and the from
     *  attribute on the stanza will be matched as bare JIDs instead of
     *  full JIDs. To use this, pass {matchBare: true} as the value of
     *  options. The default value for matchBare is false.
     *
     *  The return value should be saved if you wish to remove the handler
     *  with deleteHandler().
     *
     *  Parameters:
     *    (Function) handler - The user callback.
     *    (String) ns - The namespace to match.
     *    (String) name - The stanza name to match.
     *    (String) type - The stanza type attribute to match.
     *    (String) id - The stanza id attribute to match.
     *    (String) from - The stanza from attribute to match.
     *    (String) options - The handler options
     *
     *  Returns:
     *    A reference to the handler that can be used to remove it.
     */
    addHandler: function (handler, ns, name, type, id, from, options)
    {
        var hand = new Strophe.Handler(handler, ns, name, type, id, from, options);
        this.addHandlers.push(hand);
        return hand;
    },

    /** Function: deleteHandler
     *  Delete a stanza handler for a connection.
     *
     *  This function removes a stanza handler from the connection.  The
     *  handRef parameter is *not* the function passed to addHandler(),
     *  but is the reference returned from addHandler().
     *
     *  Parameters:
     *    (Strophe.Handler) handRef - The handler reference.
     */
    deleteHandler: function (handRef)
    {
        // this must be done in the Idle loop so that we don't change
        // the handlers during iteration
        this.removeHandlers.push(handRef);
        // If a handler is being deleted while it is being added,
        // prevent it from getting added
        var i = this.addHandlers.indexOf(handRef);
        if (i >= 0) {
            this.addHandlers.splice(i, 1);
        }
    },

    /** Function: disconnect
     *  Start the graceful disconnection process.
     *
     *  This function starts the disconnection process.  This process starts
     *  by sending unavailable presence and sending BOSH body of type
     *  terminate.  A timeout handler makes sure that disconnection happens
     *  even if the BOSH server does not respond.
     *  If the Connection object isn't connected, at least tries to abort all pending requests
     *  so the connection object won't generate successful requests (which were already opened).
     *
     *  The user supplied connection callback will be notified of the
     *  progress as this process happens.
     *
     *  Parameters:
     *    (String) reason - The reason the disconnect is occuring.
     */
    disconnect: function (reason)
    {
        this._changeConnectStatus(Strophe.Status.DISCONNECTING, reason);

        Strophe.info("Disconnect was called because: " + reason);
        if (this.connected) {
            var pres = false;
            this.disconnecting = true;
            if (this.authenticated) {
                pres = $pres({
                    xmlns: Strophe.NS.CLIENT,
                    type: 'unavailable'
                });
            }
            // setup timeout handler
            this._disconnectTimeout = this._addSysTimedHandler(
                3000, this._onDisconnectTimeout.bind(this));
            this._proto._disconnect(pres);
        } else {
            Strophe.info("Disconnect was called before Strophe connected to the server");
            this._proto._abortAllRequests();
        }
    },

    /** PrivateFunction: _changeConnectStatus
     *  _Private_ helper function that makes sure plugins and the user's
     *  callback are notified of connection status changes.
     *
     *  Parameters:
     *    (Integer) status - the new connection status, one of the values
     *      in Strophe.Status
     *    (String) condition - the error condition or null
     */
    _changeConnectStatus: function (status, condition)
    {
        // notify all plugins listening for status changes
        for (var k in Strophe._connectionPlugins) {
            if (Strophe._connectionPlugins.hasOwnProperty(k)) {
                var plugin = this[k];
                if (plugin.statusChanged) {
                    try {
                        plugin.statusChanged(status, condition);
                    } catch (err) {
                        Strophe.error("" + k + " plugin caused an exception " +
                                      "changing status: " + err);
                    }
                }
            }
        }

        // notify the user's callback
        if (this.connect_callback) {
            try {
                this.connect_callback(status, condition);
            } catch (e) {
                Strophe.error("User connection callback caused an " +
                              "exception: " + e);
            }
        }
    },

    /** PrivateFunction: _doDisconnect
     *  _Private_ function to disconnect.
     *
     *  This is the last piece of the disconnection logic.  This resets the
     *  connection and alerts the user's connection callback.
     */
    _doDisconnect: function ()
    {
        if (typeof this._idleTimeout == "number") {
            clearTimeout(this._idleTimeout);
        }

        // Cancel Disconnect Timeout
        if (this._disconnectTimeout !== null) {
            this.deleteTimedHandler(this._disconnectTimeout);
            this._disconnectTimeout = null;
        }

        Strophe.info("_doDisconnect was called");
        this._proto._doDisconnect();

        this.authenticated = false;
        this.disconnecting = false;

        // delete handlers
        this.handlers = [];
        this.timedHandlers = [];
        this.removeTimeds = [];
        this.removeHandlers = [];
        this.addTimeds = [];
        this.addHandlers = [];

        // tell the parent we disconnected
        this._changeConnectStatus(Strophe.Status.DISCONNECTED, null);
        this.connected = false;
    },

    /** PrivateFunction: _dataRecv
     *  _Private_ handler to processes incoming data from the the connection.
     *
     *  Except for _connect_cb handling the initial connection request,
     *  this function handles the incoming data for all requests.  This
     *  function also fires stanza handlers that match each incoming
     *  stanza.
     *
     *  Parameters:
     *    (Strophe.Request) req - The request that has data ready.
     *    (string) req - The stanza a raw string (optiona).
     */
    _dataRecv: function (req, raw)
    {
        Strophe.info("_dataRecv called");
        var elem = this._proto._reqToData(req);
        if (elem === null) { return; }

        if (this.xmlInput !== Strophe.Connection.prototype.xmlInput) {
            if (elem.nodeName === this._proto.strip && elem.childNodes.length) {
                this.xmlInput(elem.childNodes[0]);
            } else {
                this.xmlInput(elem);
            }
        }
        if (this.rawInput !== Strophe.Connection.prototype.rawInput) {
            if (raw) {
                this.rawInput(raw);
            } else {
                this.rawInput(Strophe.serialize(elem));
            }
        }

        // remove handlers scheduled for deletion
        var i, hand;
        while (this.removeHandlers.length > 0) {
            hand = this.removeHandlers.pop();
            i = this.handlers.indexOf(hand);
            if (i >= 0) {
                this.handlers.splice(i, 1);
            }
        }

        // add handlers scheduled for addition
        while (this.addHandlers.length > 0) {
            this.handlers.push(this.addHandlers.pop());
        }

        // handle graceful disconnect
        if (this.disconnecting && this._proto._emptyQueue()) {
            this._doDisconnect();
            return;
        }

        var type = elem.getAttribute("type");
        var cond, conflict;
        if (type !== null && type == "terminate") {
            // Don't process stanzas that come in after disconnect
            if (this.disconnecting) {
                return;
            }

            // an error occurred
            cond = elem.getAttribute("condition");
            conflict = elem.getElementsByTagName("conflict");
            if (cond !== null) {
                if (cond == "remote-stream-error" && conflict.length > 0) {
                    cond = "conflict";
                }
                this._changeConnectStatus(Strophe.Status.CONNFAIL, cond);
            } else {
                this._changeConnectStatus(Strophe.Status.CONNFAIL, "unknown");
            }
            this._doDisconnect();
            return;
        }

        // send each incoming stanza through the handler chain
        var that = this;
        Strophe.forEachChild(elem, null, function (child) {
            var i, newList;
            // process handlers
            newList = that.handlers;
            that.handlers = [];
            for (i = 0; i < newList.length; i++) {
                var hand = newList[i];
                // encapsulate 'handler.run' not to lose the whole handler list if
                // one of the handlers throws an exception
                try {
                    if (hand.isMatch(child) &&
                        (that.authenticated || !hand.user)) {
                        if (hand.run(child)) {
                            that.handlers.push(hand);
                        }
                    } else {
                        that.handlers.push(hand);
                    }
                } catch(e) {
                    // if the handler throws an exception, we consider it as false
                    Strophe.warn('Removing Strophe handlers due to uncaught exception: ' + e.message);
                }
            }
        });
    },


    /** Attribute: mechanisms
     *  SASL Mechanisms available for Conncection.
     */
    mechanisms: {},

    /** PrivateFunction: _connect_cb
     *  _Private_ handler for initial connection request.
     *
     *  This handler is used to process the initial connection request
     *  response from the BOSH server. It is used to set up authentication
     *  handlers and start the authentication process.
     *
     *  SASL authentication will be attempted if available, otherwise
     *  the code will fall back to legacy authentication.
     *
     *  Parameters:
     *    (Strophe.Request) req - The current request.
     *    (Function) _callback - low level (xmpp) connect callback function.
     *      Useful for plugins with their own xmpp connect callback (when their)
     *      want to do something special).
     */
    _connect_cb: function (req, _callback, raw)
    {
        Strophe.info("_connect_cb was called");

        this.connected = true;

        var bodyWrap = this._proto._reqToData(req);
        if (!bodyWrap) { return; }

        if (this.xmlInput !== Strophe.Connection.prototype.xmlInput) {
            if (bodyWrap.nodeName === this._proto.strip && bodyWrap.childNodes.length) {
                this.xmlInput(bodyWrap.childNodes[0]);
            } else {
                this.xmlInput(bodyWrap);
            }
        }
        if (this.rawInput !== Strophe.Connection.prototype.rawInput) {
            if (raw) {
                this.rawInput(raw);
            } else {
                this.rawInput(Strophe.serialize(bodyWrap));
            }
        }

        var conncheck = this._proto._connect_cb(bodyWrap);
        if (conncheck === Strophe.Status.CONNFAIL) {
            return;
        }

        this._authentication.sasl_scram_sha1 = false;
        this._authentication.sasl_plain = false;
        this._authentication.sasl_digest_md5 = false;
        this._authentication.sasl_anonymous = false;

        this._authentication.legacy_auth = false;

        // Check for the stream:features tag
        var hasFeatures = bodyWrap.getElementsByTagNameNS(Strophe.NS.STREAM, "features").length > 0;
        var mechanisms = bodyWrap.getElementsByTagName("mechanism");
        var matched = [];
        var i, mech, found_authentication = false;
        if (!hasFeatures) {
            this._proto._no_auth_received(_callback);
            return;
        }
        if (mechanisms.length > 0) {
            for (i = 0; i < mechanisms.length; i++) {
                mech = Strophe.getText(mechanisms[i]);
                if (this.mechanisms[mech]) matched.push(this.mechanisms[mech]);
            }
        }
        this._authentication.legacy_auth =
            bodyWrap.getElementsByTagName("auth").length > 0;
        found_authentication = this._authentication.legacy_auth ||
            matched.length > 0;
        if (!found_authentication) {
            this._proto._no_auth_received(_callback);
            return;
        }
        if (this.do_authentication !== false)
            this.authenticate(matched);
    },

    /** Function: authenticate
     * Set up authentication
     *
     *  Contiunues the initial connection request by setting up authentication
     *  handlers and start the authentication process.
     *
     *  SASL authentication will be attempted if available, otherwise
     *  the code will fall back to legacy authentication.
     *
     */
    authenticate: function (matched)
    {
      var i;
      // Sorting matched mechanisms according to priority.
      for (i = 0; i < matched.length - 1; ++i) {
        var higher = i;
        for (var j = i + 1; j < matched.length; ++j) {
          if (matched[j].prototype.priority > matched[higher].prototype.priority) {
            higher = j;
          }
        }
        if (higher != i) {
          var swap = matched[i];
          matched[i] = matched[higher];
          matched[higher] = swap;
        }
      }

      // run each mechanism
      var mechanism_found = false;
      for (i = 0; i < matched.length; ++i) {
        if (!matched[i].test(this)) continue;

        this._sasl_success_handler = this._addSysHandler(
          this._sasl_success_cb.bind(this), null,
          "success", null, null);
        this._sasl_failure_handler = this._addSysHandler(
          this._sasl_failure_cb.bind(this), null,
          "failure", null, null);
        this._sasl_challenge_handler = this._addSysHandler(
          this._sasl_challenge_cb.bind(this), null,
          "challenge", null, null);

        this._sasl_mechanism = new matched[i]();
        this._sasl_mechanism.onStart(this);

        var request_auth_exchange = $build("auth", {
          xmlns: Strophe.NS.SASL,
          mechanism: this._sasl_mechanism.name
        });

        if (this._sasl_mechanism.isClientFirst) {
          var response = this._sasl_mechanism.onChallenge(this, null);
          request_auth_exchange.t(Base64.encode(response));
        }

        this.send(request_auth_exchange.tree());

        mechanism_found = true;
        break;
      }

      if (!mechanism_found) {
        // if none of the mechanism worked
        if (Strophe.getNodeFromJid(this.jid) === null) {
            // we don't have a node, which is required for non-anonymous
            // client connections
            this._changeConnectStatus(Strophe.Status.CONNFAIL,
                                      'x-strophe-bad-non-anon-jid');
            this.disconnect('x-strophe-bad-non-anon-jid');
        } else {
          // fall back to legacy authentication
          this._changeConnectStatus(Strophe.Status.AUTHENTICATING, null);
          this._addSysHandler(this._auth1_cb.bind(this), null, null,
                              null, "_auth_1");

          this.send($iq({
            type: "get",
            to: this.domain,
            id: "_auth_1"
          }).c("query", {
            xmlns: Strophe.NS.AUTH
          }).c("username", {}).t(Strophe.getNodeFromJid(this.jid)).tree());
        }
      }

    },

    _sasl_challenge_cb: function(elem) {
      var challenge = Base64.decode(Strophe.getText(elem));
      var response = this._sasl_mechanism.onChallenge(this, challenge);

      var stanza = $build('response', {
          xmlns: Strophe.NS.SASL
      });
      if (response !== "") {
        stanza.t(Base64.encode(response));
      }
      this.send(stanza.tree());

      return true;
    },

    /** PrivateFunction: _auth1_cb
     *  _Private_ handler for legacy authentication.
     *
     *  This handler is called in response to the initial <iq type='get'/>
     *  for legacy authentication.  It builds an authentication <iq/> and
     *  sends it, creating a handler (calling back to _auth2_cb()) to
     *  handle the result
     *
     *  Parameters:
     *    (XMLElement) elem - The stanza that triggered the callback.
     *
     *  Returns:
     *    false to remove the handler.
     */
    /* jshint unused:false */
    _auth1_cb: function (elem)
    {
        // build plaintext auth iq
        var iq = $iq({type: "set", id: "_auth_2"})
            .c('query', {xmlns: Strophe.NS.AUTH})
            .c('username', {}).t(Strophe.getNodeFromJid(this.jid))
            .up()
            .c('password').t(this.pass);

        if (!Strophe.getResourceFromJid(this.jid)) {
            // since the user has not supplied a resource, we pick
            // a default one here.  unlike other auth methods, the server
            // cannot do this for us.
            this.jid = Strophe.getBareJidFromJid(this.jid) + '/strophe';
        }
        iq.up().c('resource', {}).t(Strophe.getResourceFromJid(this.jid));

        this._addSysHandler(this._auth2_cb.bind(this), null,
                            null, null, "_auth_2");

        this.send(iq.tree());

        return false;
    },
    /* jshint unused:true */

    /** PrivateFunction: _sasl_success_cb
     *  _Private_ handler for succesful SASL authentication.
     *
     *  Parameters:
     *    (XMLElement) elem - The matching stanza.
     *
     *  Returns:
     *    false to remove the handler.
     */
    _sasl_success_cb: function (elem)
    {
        if (this._sasl_data["server-signature"]) {
            var serverSignature;
            var success = Base64.decode(Strophe.getText(elem));
            var attribMatch = /([a-z]+)=([^,]+)(,|$)/;
            var matches = success.match(attribMatch);
            if (matches[1] == "v") {
                serverSignature = matches[2];
            }

            if (serverSignature != this._sasl_data["server-signature"]) {
              // remove old handlers
              this.deleteHandler(this._sasl_failure_handler);
              this._sasl_failure_handler = null;
              if (this._sasl_challenge_handler) {
                this.deleteHandler(this._sasl_challenge_handler);
                this._sasl_challenge_handler = null;
              }

              this._sasl_data = {};
              return this._sasl_failure_cb(null);
            }
        }

        Strophe.info("SASL authentication succeeded.");

        if(this._sasl_mechanism)
          this._sasl_mechanism.onSuccess();

        // remove old handlers
        this.deleteHandler(this._sasl_failure_handler);
        this._sasl_failure_handler = null;
        if (this._sasl_challenge_handler) {
            this.deleteHandler(this._sasl_challenge_handler);
            this._sasl_challenge_handler = null;
        }

        var streamfeature_handlers = [];
        var wrapper = function(handlers, elem) {
            while (handlers.length) {
                this.deleteHandler(handlers.pop());
            }
            this._sasl_auth1_cb.bind(this)(elem);
            return false;
        };
        streamfeature_handlers.push(this._addSysHandler(function(elem) {
            wrapper.bind(this)(streamfeature_handlers, elem);
        }.bind(this), null, "stream:features", null, null));
        streamfeature_handlers.push(this._addSysHandler(function(elem) {
            wrapper.bind(this)(streamfeature_handlers, elem);
        }.bind(this), Strophe.NS.STREAM, "features", null, null));

        // we must send an xmpp:restart now
        this._sendRestart();

        return false;
    },

    /** PrivateFunction: _sasl_auth1_cb
     *  _Private_ handler to start stream binding.
     *
     *  Parameters:
     *    (XMLElement) elem - The matching stanza.
     *
     *  Returns:
     *    false to remove the handler.
     */
    _sasl_auth1_cb: function (elem)
    {
        // save stream:features for future usage
        this.features = elem;

        var i, child;

        for (i = 0; i < elem.childNodes.length; i++) {
            child = elem.childNodes[i];
            if (child.nodeName == 'bind') {
                this.do_bind = true;
            }

            if (child.nodeName == 'session') {
                this.do_session = true;
            }
        }

        if (!this.do_bind) {
            this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
            return false;
        } else {
            this._addSysHandler(this._sasl_bind_cb.bind(this), null, null,
                                null, "_bind_auth_2");

            var resource = Strophe.getResourceFromJid(this.jid);
            if (resource) {
                this.send($iq({type: "set", id: "_bind_auth_2"})
                          .c('bind', {xmlns: Strophe.NS.BIND})
                          .c('resource', {}).t(resource).tree());
            } else {
                this.send($iq({type: "set", id: "_bind_auth_2"})
                          .c('bind', {xmlns: Strophe.NS.BIND})
                          .tree());
            }
        }

        return false;
    },

    /** PrivateFunction: _sasl_bind_cb
     *  _Private_ handler for binding result and session start.
     *
     *  Parameters:
     *    (XMLElement) elem - The matching stanza.
     *
     *  Returns:
     *    false to remove the handler.
     */
    _sasl_bind_cb: function (elem)
    {
        if (elem.getAttribute("type") == "error") {
            Strophe.info("SASL binding failed.");
            var conflict = elem.getElementsByTagName("conflict"), condition;
            if (conflict.length > 0) {
                condition = 'conflict';
            }
            this._changeConnectStatus(Strophe.Status.AUTHFAIL, condition);
            return false;
        }

        // TODO - need to grab errors
        var bind = elem.getElementsByTagName("bind");
        var jidNode;
        if (bind.length > 0) {
            // Grab jid
            jidNode = bind[0].getElementsByTagName("jid");
            if (jidNode.length > 0) {
                this.jid = Strophe.getText(jidNode[0]);

                if (this.do_session) {
                    this._addSysHandler(this._sasl_session_cb.bind(this),
                                        null, null, null, "_session_auth_2");

                    this.send($iq({type: "set", id: "_session_auth_2"})
                                  .c('session', {xmlns: Strophe.NS.SESSION})
                                  .tree());
                } else {
                    this.authenticated = true;
                    this._changeConnectStatus(Strophe.Status.CONNECTED, null);
                }
            }
        } else {
            Strophe.info("SASL binding failed.");
            this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
            return false;
        }
    },

    /** PrivateFunction: _sasl_session_cb
     *  _Private_ handler to finish successful SASL connection.
     *
     *  This sets Connection.authenticated to true on success, which
     *  starts the processing of user handlers.
     *
     *  Parameters:
     *    (XMLElement) elem - The matching stanza.
     *
     *  Returns:
     *    false to remove the handler.
     */
    _sasl_session_cb: function (elem)
    {
        if (elem.getAttribute("type") == "result") {
            this.authenticated = true;
            this._changeConnectStatus(Strophe.Status.CONNECTED, null);
        } else if (elem.getAttribute("type") == "error") {
            Strophe.info("Session creation failed.");
            this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
            return false;
        }

        return false;
    },

    /** PrivateFunction: _sasl_failure_cb
     *  _Private_ handler for SASL authentication failure.
     *
     *  Parameters:
     *    (XMLElement) elem - The matching stanza.
     *
     *  Returns:
     *    false to remove the handler.
     */
    /* jshint unused:false */
    _sasl_failure_cb: function (elem)
    {
        // delete unneeded handlers
        if (this._sasl_success_handler) {
            this.deleteHandler(this._sasl_success_handler);
            this._sasl_success_handler = null;
        }
        if (this._sasl_challenge_handler) {
            this.deleteHandler(this._sasl_challenge_handler);
            this._sasl_challenge_handler = null;
        }

        if(this._sasl_mechanism)
          this._sasl_mechanism.onFailure();
        this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
        return false;
    },
    /* jshint unused:true */

    /** PrivateFunction: _auth2_cb
     *  _Private_ handler to finish legacy authentication.
     *
     *  This handler is called when the result from the jabber:iq:auth
     *  <iq/> stanza is returned.
     *
     *  Parameters:
     *    (XMLElement) elem - The stanza that triggered the callback.
     *
     *  Returns:
     *    false to remove the handler.
     */
    _auth2_cb: function (elem)
    {
        if (elem.getAttribute("type") == "result") {
            this.authenticated = true;
            this._changeConnectStatus(Strophe.Status.CONNECTED, null);
        } else if (elem.getAttribute("type") == "error") {
            this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
            this.disconnect('authentication failed');
        }

        return false;
    },

    /** PrivateFunction: _addSysTimedHandler
     *  _Private_ function to add a system level timed handler.
     *
     *  This function is used to add a Strophe.TimedHandler for the
     *  library code.  System timed handlers are allowed to run before
     *  authentication is complete.
     *
     *  Parameters:
     *    (Integer) period - The period of the handler.
     *    (Function) handler - The callback function.
     */
    _addSysTimedHandler: function (period, handler)
    {
        var thand = new Strophe.TimedHandler(period, handler);
        thand.user = false;
        this.addTimeds.push(thand);
        return thand;
    },

    /** PrivateFunction: _addSysHandler
     *  _Private_ function to add a system level stanza handler.
     *
     *  This function is used to add a Strophe.Handler for the
     *  library code.  System stanza handlers are allowed to run before
     *  authentication is complete.
     *
     *  Parameters:
     *    (Function) handler - The callback function.
     *    (String) ns - The namespace to match.
     *    (String) name - The stanza name to match.
     *    (String) type - The stanza type attribute to match.
     *    (String) id - The stanza id attribute to match.
     */
    _addSysHandler: function (handler, ns, name, type, id)
    {
        var hand = new Strophe.Handler(handler, ns, name, type, id);
        hand.user = false;
        this.addHandlers.push(hand);
        return hand;
    },

    /** PrivateFunction: _onDisconnectTimeout
     *  _Private_ timeout handler for handling non-graceful disconnection.
     *
     *  If the graceful disconnect process does not complete within the
     *  time allotted, this handler finishes the disconnect anyway.
     *
     *  Returns:
     *    false to remove the handler.
     */
    _onDisconnectTimeout: function ()
    {
        Strophe.info("_onDisconnectTimeout was called");

        this._proto._onDisconnectTimeout();

        // actually disconnect
        this._doDisconnect();

        return false;
    },

    /** PrivateFunction: _onIdle
     *  _Private_ handler to process events during idle cycle.
     *
     *  This handler is called every 100ms to fire timed handlers that
     *  are ready and keep poll requests going.
     */
    _onIdle: function ()
    {
        var i, thand, since, newList;

        // add timed handlers scheduled for addition
        // NOTE: we add before remove in the case a timed handler is
        // added and then deleted before the next _onIdle() call.
        while (this.addTimeds.length > 0) {
            this.timedHandlers.push(this.addTimeds.pop());
        }

        // remove timed handlers that have been scheduled for deletion
        while (this.removeTimeds.length > 0) {
            thand = this.removeTimeds.pop();
            i = this.timedHandlers.indexOf(thand);
            if (i >= 0) {
                this.timedHandlers.splice(i, 1);
            }
        }

        // call ready timed handlers
        var now = new Date().getTime();
        newList = [];
        for (i = 0; i < this.timedHandlers.length; i++) {
            thand = this.timedHandlers[i];
            if (this.authenticated || !thand.user) {
                since = thand.lastCalled + thand.period;
                if (since - now <= 0) {
                    if (thand.run()) {
                        newList.push(thand);
                    }
                } else {
                    newList.push(thand);
                }
            }
        }
        this.timedHandlers = newList;

        clearTimeout(this._idleTimeout);

        this._proto._onIdle();

        // reactivate the timer only if connected
        if (this.connected) {
            this._idleTimeout = setTimeout(this._onIdle.bind(this), 100);
        }
    }
};

/** Class: Strophe.SASLMechanism
 *
 *  encapsulates SASL authentication mechanisms.
 *
 *  User code may override the priority for each mechanism or disable it completely.
 *  See <priority> for information about changing priority and <test> for informatian on
 *  how to disable a mechanism.
 *
 *  By default, all mechanisms are enabled and the priorities are
 *
 *  SCRAM-SHA1 - 40
 *  DIGEST-MD5 - 30
 *  Plain - 20
 */

/**
 * PrivateConstructor: Strophe.SASLMechanism
 * SASL auth mechanism abstraction.
 *
 *  Parameters:
 *    (String) name - SASL Mechanism name.
 *    (Boolean) isClientFirst - If client should send response first without challenge.
 *    (Number) priority - Priority.
 *
 *  Returns:
 *    A new Strophe.SASLMechanism object.
 */
Strophe.SASLMechanism = function(name, isClientFirst, priority) {
  /** PrivateVariable: name
   *  Mechanism name.
   */
  this.name = name;
  /** PrivateVariable: isClientFirst
   *  If client sends response without initial server challenge.
   */
  this.isClientFirst = isClientFirst;
  /** Variable: priority
   *  Determines which <SASLMechanism> is chosen for authentication (Higher is better).
   *  Users may override this to prioritize mechanisms differently.
   *
   *  In the default configuration the priorities are
   *
   *  SCRAM-SHA1 - 40
   *  DIGEST-MD5 - 30
   *  Plain - 20
   *
   *  Example: (This will cause Strophe to choose the mechanism that the server sent first)
   *
   *  > Strophe.SASLMD5.priority = Strophe.SASLSHA1.priority;
   *
   *  See <SASL mechanisms> for a list of available mechanisms.
   *
   */
  this.priority = priority;
};

Strophe.SASLMechanism.prototype = {
  /**
   *  Function: test
   *  Checks if mechanism able to run.
   *  To disable a mechanism, make this return false;
   *
   *  To disable plain authentication run
   *  > Strophe.SASLPlain.test = function() {
   *  >   return false;
   *  > }
   *
   *  See <SASL mechanisms> for a list of available mechanisms.
   *
   *  Parameters:
   *    (Strophe.Connection) connection - Target Connection.
   *
   *  Returns:
   *    (Boolean) If mechanism was able to run.
   */
  /* jshint unused:false */
  test: function(connection) {
    return true;
  },
  /* jshint unused:true */

  /** PrivateFunction: onStart
   *  Called before starting mechanism on some connection.
   *
   *  Parameters:
   *    (Strophe.Connection) connection - Target Connection.
   */
  onStart: function(connection)
  {
    this._connection = connection;
  },

  /** PrivateFunction: onChallenge
   *  Called by protocol implementation on incoming challenge. If client is
   *  first (isClientFirst == true) challenge will be null on the first call.
   *
   *  Parameters:
   *    (Strophe.Connection) connection - Target Connection.
   *    (String) challenge - current challenge to handle.
   *
   *  Returns:
   *    (String) Mechanism response.
   */
  /* jshint unused:false */
  onChallenge: function(connection, challenge) {
    throw new Error("You should implement challenge handling!");
  },
  /* jshint unused:true */

  /** PrivateFunction: onFailure
   *  Protocol informs mechanism implementation about SASL failure.
   */
  onFailure: function() {
    this._connection = null;
  },

  /** PrivateFunction: onSuccess
   *  Protocol informs mechanism implementation about SASL success.
   */
  onSuccess: function() {
    this._connection = null;
  }
};

  /** Constants: SASL mechanisms
   *  Available authentication mechanisms
   *
   *  Strophe.SASLAnonymous - SASL Anonymous authentication.
   *  Strophe.SASLPlain - SASL Plain authentication.
   *  Strophe.SASLMD5 - SASL Digest-MD5 authentication
   *  Strophe.SASLSHA1 - SASL SCRAM-SHA1 authentication
   */

// Building SASL callbacks

/** PrivateConstructor: SASLAnonymous
 *  SASL Anonymous authentication.
 */
Strophe.SASLAnonymous = function() {};

Strophe.SASLAnonymous.prototype = new Strophe.SASLMechanism("ANONYMOUS", false, 10);

Strophe.SASLAnonymous.test = function(connection) {
  return connection.authcid === null;
};

Strophe.Connection.prototype.mechanisms[Strophe.SASLAnonymous.prototype.name] = Strophe.SASLAnonymous;

/** PrivateConstructor: SASLPlain
 *  SASL Plain authentication.
 */
Strophe.SASLPlain = function() {};

Strophe.SASLPlain.prototype = new Strophe.SASLMechanism("PLAIN", true, 20);

Strophe.SASLPlain.test = function(connection) {
  return connection.authcid !== null;
};

Strophe.SASLPlain.prototype.onChallenge = function(connection) {
  var auth_str = connection.authzid;
  auth_str = auth_str + "\u0000";
  auth_str = auth_str + connection.authcid;
  auth_str = auth_str + "\u0000";
  auth_str = auth_str + connection.pass;
  return auth_str;
};

Strophe.Connection.prototype.mechanisms[Strophe.SASLPlain.prototype.name] = Strophe.SASLPlain;

/** PrivateConstructor: SASLSHA1
 *  SASL SCRAM SHA 1 authentication.
 */
Strophe.SASLSHA1 = function() {};

/* TEST:
 * This is a simple example of a SCRAM-SHA-1 authentication exchange
 * when the client doesn't support channel bindings (username 'user' and
 * password 'pencil' are used):
 *
 * C: n,,n=user,r=fyko+d2lbbFgONRv9qkxdawL
 * S: r=fyko+d2lbbFgONRv9qkxdawL3rfcNHYJY1ZVvWVs7j,s=QSXCR+Q6sek8bf92,
 * i=4096
 * C: c=biws,r=fyko+d2lbbFgONRv9qkxdawL3rfcNHYJY1ZVvWVs7j,
 * p=v0X8v3Bz2T0CJGbJQyF0X+HI4Ts=
 * S: v=rmF9pqV8S7suAoZWja4dJRkFsKQ=
 *
 */

Strophe.SASLSHA1.prototype = new Strophe.SASLMechanism("SCRAM-SHA-1", true, 40);

Strophe.SASLSHA1.test = function(connection) {
  return connection.authcid !== null;
};

Strophe.SASLSHA1.prototype.onChallenge = function(connection, challenge, test_cnonce) {
  var cnonce = test_cnonce || MD5.hexdigest(Math.random() * 1234567890);

  var auth_str = "n=" + connection.authcid;
  auth_str += ",r=";
  auth_str += cnonce;

  connection._sasl_data.cnonce = cnonce;
  connection._sasl_data["client-first-message-bare"] = auth_str;

  auth_str = "n,," + auth_str;

  this.onChallenge = function (connection, challenge)
  {
    var nonce, salt, iter, Hi, U, U_old, i, k;
    var clientKey, serverKey, clientSignature;
    var responseText = "c=biws,";
    var authMessage = connection._sasl_data["client-first-message-bare"] + "," +
      challenge + ",";
    var cnonce = connection._sasl_data.cnonce;
    var attribMatch = /([a-z]+)=([^,]+)(,|$)/;

    while (challenge.match(attribMatch)) {
      var matches = challenge.match(attribMatch);
      challenge = challenge.replace(matches[0], "");
      switch (matches[1]) {
      case "r":
        nonce = matches[2];
        break;
      case "s":
        salt = matches[2];
        break;
      case "i":
        iter = matches[2];
        break;
      }
    }

    if (nonce.substr(0, cnonce.length) !== cnonce) {
      connection._sasl_data = {};
      return connection._sasl_failure_cb();
    }

    responseText += "r=" + nonce;
    authMessage += responseText;

    salt = Base64.decode(salt);
    salt += "\x00\x00\x00\x01";

    Hi = U_old = SHA1.core_hmac_sha1(connection.pass, salt);
    for (i = 1; i < iter; i++) {
      U = SHA1.core_hmac_sha1(connection.pass, SHA1.binb2str(U_old));
      for (k = 0; k < 5; k++) {
        Hi[k] ^= U[k];
      }
      U_old = U;
    }
    Hi = SHA1.binb2str(Hi);

    clientKey = SHA1.core_hmac_sha1(Hi, "Client Key");
    serverKey = SHA1.str_hmac_sha1(Hi, "Server Key");
    clientSignature = SHA1.core_hmac_sha1(SHA1.str_sha1(SHA1.binb2str(clientKey)), authMessage);
    connection._sasl_data["server-signature"] = SHA1.b64_hmac_sha1(serverKey, authMessage);

    for (k = 0; k < 5; k++) {
      clientKey[k] ^= clientSignature[k];
    }

    responseText += ",p=" + Base64.encode(SHA1.binb2str(clientKey));

    return responseText;
  }.bind(this);

  return auth_str;
};

Strophe.Connection.prototype.mechanisms[Strophe.SASLSHA1.prototype.name] = Strophe.SASLSHA1;

/** PrivateConstructor: SASLMD5
 *  SASL DIGEST MD5 authentication.
 */
Strophe.SASLMD5 = function() {};

Strophe.SASLMD5.prototype = new Strophe.SASLMechanism("DIGEST-MD5", false, 30);

Strophe.SASLMD5.test = function(connection) {
  return connection.authcid !== null;
};

/** PrivateFunction: _quote
 *  _Private_ utility function to backslash escape and quote strings.
 *
 *  Parameters:
 *    (String) str - The string to be quoted.
 *
 *  Returns:
 *    quoted string
 */
Strophe.SASLMD5.prototype._quote = function (str)
  {
    return '"' + str.replace(/\\/g, "\\\\").replace(/"/g, '\\"') + '"';
    //" end string workaround for emacs
  };


Strophe.SASLMD5.prototype.onChallenge = function(connection, challenge, test_cnonce) {
  var attribMatch = /([a-z]+)=("[^"]+"|[^,"]+)(?:,|$)/;
  var cnonce = test_cnonce || MD5.hexdigest("" + (Math.random() * 1234567890));
  var realm = "";
  var host = null;
  var nonce = "";
  var qop = "";
  var matches;

  while (challenge.match(attribMatch)) {
    matches = challenge.match(attribMatch);
    challenge = challenge.replace(matches[0], "");
    matches[2] = matches[2].replace(/^"(.+)"$/, "$1");
    switch (matches[1]) {
    case "realm":
      realm = matches[2];
      break;
    case "nonce":
      nonce = matches[2];
      break;
    case "qop":
      qop = matches[2];
      break;
    case "host":
      host = matches[2];
      break;
    }
  }

  var digest_uri = connection.servtype + "/" + connection.domain;
  if (host !== null) {
    digest_uri = digest_uri + "/" + host;
  }

  var A1 = MD5.hash(connection.authcid +
                    ":" + realm + ":" + this._connection.pass) +
    ":" + nonce + ":" + cnonce;
  var A2 = 'AUTHENTICATE:' + digest_uri;

  var responseText = "";
  responseText += 'charset=utf-8,';
  responseText += 'username=' +
    this._quote(connection.authcid) + ',';
  responseText += 'realm=' + this._quote(realm) + ',';
  responseText += 'nonce=' + this._quote(nonce) + ',';
  responseText += 'nc=00000001,';
  responseText += 'cnonce=' + this._quote(cnonce) + ',';
  responseText += 'digest-uri=' + this._quote(digest_uri) + ',';
  responseText += 'response=' + MD5.hexdigest(MD5.hexdigest(A1) + ":" +
                                              nonce + ":00000001:" +
                                              cnonce + ":auth:" +
                                              MD5.hexdigest(A2)) + ",";
  responseText += 'qop=auth';

  this.onChallenge = function ()
  {
      return "";
  }.bind(this);

  return responseText;
};

Strophe.Connection.prototype.mechanisms[Strophe.SASLMD5.prototype.name] = Strophe.SASLMD5;

return {
    Strophe:        Strophe,
    $build:         $build,
    $msg:           $msg,
    $iq:            $iq,
    $pres:          $pres,
    SHA1:           SHA1,
    Base64:         Base64,
    MD5:            MD5,
};
}));

/*
    This program is distributed under the terms of the MIT license.
    Please see the LICENSE file for details.

    Copyright 2006-2008, OGG, LLC
*/

/* jshint undef: true, unused: true:, noarg: true, latedef: true */
/* global define, window, setTimeout, clearTimeout, XMLHttpRequest, ActiveXObject, Strophe, $build */

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('strophe-bosh',['strophe-core'], function (core) {
            return factory(
                core.Strophe,
                core.$build
            );
        });
    } else {
        // Browser globals
        return factory(Strophe, $build);
    }
}(this, function (Strophe, $build) {

/** PrivateClass: Strophe.Request
 *  _Private_ helper class that provides a cross implementation abstraction
 *  for a BOSH related XMLHttpRequest.
 *
 *  The Strophe.Request class is used internally to encapsulate BOSH request
 *  information.  It is not meant to be used from user's code.
 */

/** PrivateConstructor: Strophe.Request
 *  Create and initialize a new Strophe.Request object.
 *
 *  Parameters:
 *    (XMLElement) elem - The XML data to be sent in the request.
 *    (Function) func - The function that will be called when the
 *      XMLHttpRequest readyState changes.
 *    (Integer) rid - The BOSH rid attribute associated with this request.
 *    (Integer) sends - The number of times this same request has been
 *      sent.
 */
Strophe.Request = function (elem, func, rid, sends)
{
    this.id = ++Strophe._requestId;
    this.xmlData = elem;
    this.data = Strophe.serialize(elem);
    // save original function in case we need to make a new request
    // from this one.
    this.origFunc = func;
    this.func = func;
    this.rid = rid;
    this.date = NaN;
    this.sends = sends || 0;
    this.abort = false;
    this.dead = null;

    this.age = function () {
        if (!this.date) { return 0; }
        var now = new Date();
        return (now - this.date) / 1000;
    };
    this.timeDead = function () {
        if (!this.dead) { return 0; }
        var now = new Date();
        return (now - this.dead) / 1000;
    };
    this.xhr = this._newXHR();
};

Strophe.Request.prototype = {
    /** PrivateFunction: getResponse
     *  Get a response from the underlying XMLHttpRequest.
     *
     *  This function attempts to get a response from the request and checks
     *  for errors.
     *
     *  Throws:
     *    "parsererror" - A parser error occured.
     *
     *  Returns:
     *    The DOM element tree of the response.
     */
    getResponse: function ()
    {
        var node = null;
        if (this.xhr.responseXML && this.xhr.responseXML.documentElement) {
            node = this.xhr.responseXML.documentElement;
            if (node.tagName == "parsererror") {
                Strophe.error("invalid response received");
                Strophe.error("responseText: " + this.xhr.responseText);
                Strophe.error("responseXML: " +
                              Strophe.serialize(this.xhr.responseXML));
                throw "parsererror";
            }
        } else if (this.xhr.responseText) {
            Strophe.error("invalid response received");
            Strophe.error("responseText: " + this.xhr.responseText);
            Strophe.error("responseXML: " +
                          Strophe.serialize(this.xhr.responseXML));
        }

        return node;
    },

    /** PrivateFunction: _newXHR
     *  _Private_ helper function to create XMLHttpRequests.
     *
     *  This function creates XMLHttpRequests across all implementations.
     *
     *  Returns:
     *    A new XMLHttpRequest.
     */
    _newXHR: function ()
    {
        var xhr = null;
        if (window.XMLHttpRequest) {
            xhr = new XMLHttpRequest();
            if (xhr.overrideMimeType) {
                xhr.overrideMimeType("text/xml; charset=utf-8");
            }
        } else if (window.ActiveXObject) {
            xhr = new ActiveXObject("Microsoft.XMLHTTP");
        }

        // use Function.bind() to prepend ourselves as an argument
        xhr.onreadystatechange = this.func.bind(null, this);

        return xhr;
    }
};

/** Class: Strophe.Bosh
 *  _Private_ helper class that handles BOSH Connections
 *
 *  The Strophe.Bosh class is used internally by Strophe.Connection
 *  to encapsulate BOSH sessions. It is not meant to be used from user's code.
 */

/** File: bosh.js
 *  A JavaScript library to enable BOSH in Strophejs.
 *
 *  this library uses Bidirectional-streams Over Synchronous HTTP (BOSH)
 *  to emulate a persistent, stateful, two-way connection to an XMPP server.
 *  More information on BOSH can be found in XEP 124.
 */

/** PrivateConstructor: Strophe.Bosh
 *  Create and initialize a Strophe.Bosh object.
 *
 *  Parameters:
 *    (Strophe.Connection) connection - The Strophe.Connection that will use BOSH.
 *
 *  Returns:
 *    A new Strophe.Bosh object.
 */
Strophe.Bosh = function(connection) {
    this._conn = connection;
    /* request id for body tags */
    this.rid = Math.floor(Math.random() * 4294967295);
    /* The current session ID. */
    this.sid = null;

    // default BOSH values
    this.hold = 1;
    this.wait = 60;
    this.window = 5;
    this.errors = 0;

    this._requests = [];
};

Strophe.Bosh.prototype = {
    /** Variable: strip
     *
     *  BOSH-Connections will have all stanzas wrapped in a <body> tag when
     *  passed to <Strophe.Connection.xmlInput> or <Strophe.Connection.xmlOutput>.
     *  To strip this tag, User code can set <Strophe.Bosh.strip> to "body":
     *
     *  > Strophe.Bosh.prototype.strip = "body";
     *
     *  This will enable stripping of the body tag in both
     *  <Strophe.Connection.xmlInput> and <Strophe.Connection.xmlOutput>.
     */
    strip: null,

    /** PrivateFunction: _buildBody
     *  _Private_ helper function to generate the <body/> wrapper for BOSH.
     *
     *  Returns:
     *    A Strophe.Builder with a <body/> element.
     */
    _buildBody: function ()
    {
        var bodyWrap = $build('body', {
            rid: this.rid++,
            xmlns: Strophe.NS.HTTPBIND
        });

        if (this.sid !== null) {
            bodyWrap.attrs({sid: this.sid});
        }

        return bodyWrap;
    },

    /** PrivateFunction: _reset
     *  Reset the connection.
     *
     *  This function is called by the reset function of the Strophe Connection
     */
    _reset: function ()
    {
        this.rid = Math.floor(Math.random() * 4294967295);
        this.sid = null;
        this.errors = 0;
    },

    /** PrivateFunction: _connect
     *  _Private_ function that initializes the BOSH connection.
     *
     *  Creates and sends the Request that initializes the BOSH connection.
     */
    _connect: function (wait, hold, route)
    {
        this.wait = wait || this.wait;
        this.hold = hold || this.hold;
        this.errors = 0;

        // build the body tag
        var body = this._buildBody().attrs({
            to: this._conn.domain,
            "xml:lang": "en",
            wait: this.wait,
            hold: this.hold,
            content: "text/xml; charset=utf-8",
            ver: "1.6",
            "xmpp:version": "1.0",
            "xmlns:xmpp": Strophe.NS.BOSH
        });

        if(route){
            body.attrs({
                route: route
            });
        }

        var _connect_cb = this._conn._connect_cb;

        this._requests.push(
            new Strophe.Request(body.tree(),
                                this._onRequestStateChange.bind(
                                    this, _connect_cb.bind(this._conn)),
                                body.tree().getAttribute("rid")));
        this._throttledRequestHandler();
    },

    /** PrivateFunction: _attach
     *  Attach to an already created and authenticated BOSH session.
     *
     *  This function is provided to allow Strophe to attach to BOSH
     *  sessions which have been created externally, perhaps by a Web
     *  application.  This is often used to support auto-login type features
     *  without putting user credentials into the page.
     *
     *  Parameters:
     *    (String) jid - The full JID that is bound by the session.
     *    (String) sid - The SID of the BOSH session.
     *    (String) rid - The current RID of the BOSH session.  This RID
     *      will be used by the next request.
     *    (Function) callback The connect callback function.
     *    (Integer) wait - The optional HTTPBIND wait value.  This is the
     *      time the server will wait before returning an empty result for
     *      a request.  The default setting of 60 seconds is recommended.
     *      Other settings will require tweaks to the Strophe.TIMEOUT value.
     *    (Integer) hold - The optional HTTPBIND hold value.  This is the
     *      number of connections the server will hold at one time.  This
     *      should almost always be set to 1 (the default).
     *    (Integer) wind - The optional HTTBIND window value.  This is the
     *      allowed range of request ids that are valid.  The default is 5.
     */
    _attach: function (jid, sid, rid, callback, wait, hold, wind)
    {
        this._conn.jid = jid;
        this.sid = sid;
        this.rid = rid;

        this._conn.connect_callback = callback;

        this._conn.domain = Strophe.getDomainFromJid(this._conn.jid);

        this._conn.authenticated = true;
        this._conn.connected = true;

        this.wait = wait || this.wait;
        this.hold = hold || this.hold;
        this.window = wind || this.window;

        this._conn._changeConnectStatus(Strophe.Status.ATTACHED, null);
    },

    /** PrivateFunction: _connect_cb
     *  _Private_ handler for initial connection request.
     *
     *  This handler is used to process the Bosh-part of the initial request.
     *  Parameters:
     *    (Strophe.Request) bodyWrap - The received stanza.
     */
    _connect_cb: function (bodyWrap)
    {
        var typ = bodyWrap.getAttribute("type");
        var cond, conflict;
        if (typ !== null && typ == "terminate") {
            // an error occurred
            Strophe.error("BOSH-Connection failed: " + cond);
            cond = bodyWrap.getAttribute("condition");
            conflict = bodyWrap.getElementsByTagName("conflict");
            if (cond !== null) {
                if (cond == "remote-stream-error" && conflict.length > 0) {
                    cond = "conflict";
                }
                this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, cond);
            } else {
                this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "unknown");
            }
            this._conn._doDisconnect();
            return Strophe.Status.CONNFAIL;
        }

        // check to make sure we don't overwrite these if _connect_cb is
        // called multiple times in the case of missing stream:features
        if (!this.sid) {
            this.sid = bodyWrap.getAttribute("sid");
        }
        var wind = bodyWrap.getAttribute('requests');
        if (wind) { this.window = parseInt(wind, 10); }
        var hold = bodyWrap.getAttribute('hold');
        if (hold) { this.hold = parseInt(hold, 10); }
        var wait = bodyWrap.getAttribute('wait');
        if (wait) { this.wait = parseInt(wait, 10); }
    },

    /** PrivateFunction: _disconnect
     *  _Private_ part of Connection.disconnect for Bosh
     *
     *  Parameters:
     *    (Request) pres - This stanza will be sent before disconnecting.
     */
    _disconnect: function (pres)
    {
        this._sendTerminate(pres);
    },

    /** PrivateFunction: _doDisconnect
     *  _Private_ function to disconnect.
     *
     *  Resets the SID and RID.
     */
    _doDisconnect: function ()
    {
        this.sid = null;
        this.rid = Math.floor(Math.random() * 4294967295);
    },

    /** PrivateFunction: _emptyQueue
     * _Private_ function to check if the Request queue is empty.
     *
     *  Returns:
     *    True, if there are no Requests queued, False otherwise.
     */
    _emptyQueue: function ()
    {
        return this._requests.length === 0;
    },

    /** PrivateFunction: _hitError
     *  _Private_ function to handle the error count.
     *
     *  Requests are resent automatically until their error count reaches
     *  5.  Each time an error is encountered, this function is called to
     *  increment the count and disconnect if the count is too high.
     *
     *  Parameters:
     *    (Integer) reqStatus - The request status.
     */
    _hitError: function (reqStatus)
    {
        this.errors++;
        Strophe.warn("request errored, status: " + reqStatus +
                     ", number of errors: " + this.errors);
        if (this.errors > 4) {
            this._conn._onDisconnectTimeout();
        }
    },

    /** PrivateFunction: _no_auth_received
     *
     * Called on stream start/restart when no stream:features
     * has been received and sends a blank poll request.
     */
    _no_auth_received: function (_callback)
    {
        if (_callback) {
            _callback = _callback.bind(this._conn);
        } else {
            _callback = this._conn._connect_cb.bind(this._conn);
        }
        var body = this._buildBody();
        this._requests.push(
                new Strophe.Request(body.tree(),
                    this._onRequestStateChange.bind(
                        this, _callback.bind(this._conn)),
                    body.tree().getAttribute("rid")));
        this._throttledRequestHandler();
    },

    /** PrivateFunction: _onDisconnectTimeout
     *  _Private_ timeout handler for handling non-graceful disconnection.
     *
     *  Cancels all remaining Requests and clears the queue.
     */
    _onDisconnectTimeout: function () {
        this._abortAllRequests();
    },

    /** PrivateFunction: _abortAllRequests
     *  _Private_ helper function that makes sure all pending requests are aborted.
     */
    _abortAllRequests: function _abortAllRequests() {
        var req;
        while (this._requests.length > 0) {
            req = this._requests.pop();
            req.abort = true;
            req.xhr.abort();
            // jslint complains, but this is fine. setting to empty func
            // is necessary for IE6
            req.xhr.onreadystatechange = function () {}; // jshint ignore:line
        }
    },

    /** PrivateFunction: _onIdle
     *  _Private_ handler called by Strophe.Connection._onIdle
     *
     *  Sends all queued Requests or polls with empty Request if there are none.
     */
    _onIdle: function () {
        var data = this._conn._data;

        // if no requests are in progress, poll
        if (this._conn.authenticated && this._requests.length === 0 &&
            data.length === 0 && !this._conn.disconnecting) {
            Strophe.info("no requests during idle cycle, sending " +
                         "blank request");
            data.push(null);
        }

        if (this._conn.paused) {
            return;
        }

        if (this._requests.length < 2 && data.length > 0) {
            var body = this._buildBody();
            for (var i = 0; i < data.length; i++) {
                if (data[i] !== null) {
                    if (data[i] === "restart") {
                        body.attrs({
                            to: this._conn.domain,
                            "xml:lang": "en",
                            "xmpp:restart": "true",
                            "xmlns:xmpp": Strophe.NS.BOSH
                        });
                    } else {
                        body.cnode(data[i]).up();
                    }
                }
            }
            delete this._conn._data;
            this._conn._data = [];
            this._requests.push(
                new Strophe.Request(body.tree(),
                                    this._onRequestStateChange.bind(
                                        this, this._conn._dataRecv.bind(this._conn)),
                                    body.tree().getAttribute("rid")));
            this._throttledRequestHandler();
        }

        if (this._requests.length > 0) {
            var time_elapsed = this._requests[0].age();
            if (this._requests[0].dead !== null) {
                if (this._requests[0].timeDead() >
                    Math.floor(Strophe.SECONDARY_TIMEOUT * this.wait)) {
                    this._throttledRequestHandler();
                }
            }

            if (time_elapsed > Math.floor(Strophe.TIMEOUT * this.wait)) {
                Strophe.warn("Request " +
                             this._requests[0].id +
                             " timed out, over " + Math.floor(Strophe.TIMEOUT * this.wait) +
                             " seconds since last activity");
                this._throttledRequestHandler();
            }
        }
    },

    /** PrivateFunction: _onRequestStateChange
     *  _Private_ handler for Strophe.Request state changes.
     *
     *  This function is called when the XMLHttpRequest readyState changes.
     *  It contains a lot of error handling logic for the many ways that
     *  requests can fail, and calls the request callback when requests
     *  succeed.
     *
     *  Parameters:
     *    (Function) func - The handler for the request.
     *    (Strophe.Request) req - The request that is changing readyState.
     */
    _onRequestStateChange: function (func, req)
    {
        Strophe.debug("request id " + req.id +
                      "." + req.sends + " state changed to " +
                      req.xhr.readyState);

        if (req.abort) {
            req.abort = false;
            return;
        }

        // request complete
        var reqStatus;
        if (req.xhr.readyState == 4) {
            reqStatus = 0;
            try {
                reqStatus = req.xhr.status;
            } catch (e) {
                // ignore errors from undefined status attribute.  works
                // around a browser bug
            }

            if (typeof(reqStatus) == "undefined") {
                reqStatus = 0;
            }

            if (this.disconnecting) {
                if (reqStatus >= 400) {
                    this._hitError(reqStatus);
                    return;
                }
            }

            var reqIs0 = (this._requests[0] == req);
            var reqIs1 = (this._requests[1] == req);

            if ((reqStatus > 0 && reqStatus < 500) || req.sends > 5) {
                // remove from internal queue
                this._removeRequest(req);
                Strophe.debug("request id " +
                              req.id +
                              " should now be removed");
            }

            // request succeeded
            if (reqStatus == 200) {
                // if request 1 finished, or request 0 finished and request
                // 1 is over Strophe.SECONDARY_TIMEOUT seconds old, we need to
                // restart the other - both will be in the first spot, as the
                // completed request has been removed from the queue already
                if (reqIs1 ||
                    (reqIs0 && this._requests.length > 0 &&
                     this._requests[0].age() > Math.floor(Strophe.SECONDARY_TIMEOUT * this.wait))) {
                    this._restartRequest(0);
                }
                // call handler
                Strophe.debug("request id " +
                              req.id + "." +
                              req.sends + " got 200");
                func(req);
                this.errors = 0;
            } else {
                Strophe.error("request id " +
                              req.id + "." +
                              req.sends + " error " + reqStatus +
                              " happened");
                if (reqStatus === 0 ||
                    (reqStatus >= 400 && reqStatus < 600) ||
                    reqStatus >= 12000) {
                    this._hitError(reqStatus);
                    if (reqStatus >= 400 && reqStatus < 500) {
                        this._conn._changeConnectStatus(Strophe.Status.DISCONNECTING,
                                                  null);
                        this._conn._doDisconnect();
                    }
                }
            }

            if (!((reqStatus > 0 && reqStatus < 500) ||
                  req.sends > 5)) {
                this._throttledRequestHandler();
            }
        }
    },

    /** PrivateFunction: _processRequest
     *  _Private_ function to process a request in the queue.
     *
     *  This function takes requests off the queue and sends them and
     *  restarts dead requests.
     *
     *  Parameters:
     *    (Integer) i - The index of the request in the queue.
     */
    _processRequest: function (i)
    {
        var self = this;
        var req = this._requests[i];
        var reqStatus = -1;

        try {
            if (req.xhr.readyState == 4) {
                reqStatus = req.xhr.status;
            }
        } catch (e) {
            Strophe.error("caught an error in _requests[" + i +
                          "], reqStatus: " + reqStatus);
        }

        if (typeof(reqStatus) == "undefined") {
            reqStatus = -1;
        }

        // make sure we limit the number of retries
        if (req.sends > this._conn.maxRetries) {
            this._conn._onDisconnectTimeout();
            return;
        }

        var time_elapsed = req.age();
        var primaryTimeout = (!isNaN(time_elapsed) &&
                              time_elapsed > Math.floor(Strophe.TIMEOUT * this.wait));
        var secondaryTimeout = (req.dead !== null &&
                                req.timeDead() > Math.floor(Strophe.SECONDARY_TIMEOUT * this.wait));
        var requestCompletedWithServerError = (req.xhr.readyState == 4 &&
                                               (reqStatus < 1 ||
                                                reqStatus >= 500));
        if (primaryTimeout || secondaryTimeout ||
            requestCompletedWithServerError) {
            if (secondaryTimeout) {
                Strophe.error("Request " +
                              this._requests[i].id +
                              " timed out (secondary), restarting");
            }
            req.abort = true;
            req.xhr.abort();
            // setting to null fails on IE6, so set to empty function
            req.xhr.onreadystatechange = function () {};
            this._requests[i] = new Strophe.Request(req.xmlData,
                                                    req.origFunc,
                                                    req.rid,
                                                    req.sends);
            req = this._requests[i];
        }

        if (req.xhr.readyState === 0) {
            Strophe.debug("request id " + req.id +
                          "." + req.sends + " posting");

            try {
                req.xhr.open("POST", this._conn.service, this._conn.options.sync ? false : true);
                req.xhr.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
            } catch (e2) {
                Strophe.error("XHR open failed.");
                if (!this._conn.connected) {
                    this._conn._changeConnectStatus(Strophe.Status.CONNFAIL,
                                              "bad-service");
                }
                this._conn.disconnect();
                return;
            }

            // Fires the XHR request -- may be invoked immediately
            // or on a gradually expanding retry window for reconnects
            var sendFunc = function () {
                req.date = new Date();
                if (self._conn.options.customHeaders){
                    var headers = self._conn.options.customHeaders;
                    for (var header in headers) {
                        if (headers.hasOwnProperty(header)) {
                            req.xhr.setRequestHeader(header, headers[header]);
                        }
                    }
                }
                req.xhr.send(req.data);
            };

            // Implement progressive backoff for reconnects --
            // First retry (send == 1) should also be instantaneous
            if (req.sends > 1) {
                // Using a cube of the retry number creates a nicely
                // expanding retry window
                var backoff = Math.min(Math.floor(Strophe.TIMEOUT * this.wait),
                                       Math.pow(req.sends, 3)) * 1000;
                setTimeout(sendFunc, backoff);
            } else {
                sendFunc();
            }

            req.sends++;

            if (this._conn.xmlOutput !== Strophe.Connection.prototype.xmlOutput) {
                if (req.xmlData.nodeName === this.strip && req.xmlData.childNodes.length) {
                    this._conn.xmlOutput(req.xmlData.childNodes[0]);
                } else {
                    this._conn.xmlOutput(req.xmlData);
                }
            }
            if (this._conn.rawOutput !== Strophe.Connection.prototype.rawOutput) {
                this._conn.rawOutput(req.data);
            }
        } else {
            Strophe.debug("_processRequest: " +
                          (i === 0 ? "first" : "second") +
                          " request has readyState of " +
                          req.xhr.readyState);
        }
    },

    /** PrivateFunction: _removeRequest
     *  _Private_ function to remove a request from the queue.
     *
     *  Parameters:
     *    (Strophe.Request) req - The request to remove.
     */
    _removeRequest: function (req)
    {
        Strophe.debug("removing request");

        var i;
        for (i = this._requests.length - 1; i >= 0; i--) {
            if (req == this._requests[i]) {
                this._requests.splice(i, 1);
            }
        }

        // IE6 fails on setting to null, so set to empty function
        req.xhr.onreadystatechange = function () {};

        this._throttledRequestHandler();
    },

    /** PrivateFunction: _restartRequest
     *  _Private_ function to restart a request that is presumed dead.
     *
     *  Parameters:
     *    (Integer) i - The index of the request in the queue.
     */
    _restartRequest: function (i)
    {
        var req = this._requests[i];
        if (req.dead === null) {
            req.dead = new Date();
        }

        this._processRequest(i);
    },

    /** PrivateFunction: _reqToData
     * _Private_ function to get a stanza out of a request.
     *
     * Tries to extract a stanza out of a Request Object.
     * When this fails the current connection will be disconnected.
     *
     *  Parameters:
     *    (Object) req - The Request.
     *
     *  Returns:
     *    The stanza that was passed.
     */
    _reqToData: function (req)
    {
        try {
            return req.getResponse();
        } catch (e) {
            if (e != "parsererror") { throw e; }
            this._conn.disconnect("strophe-parsererror");
        }
    },

    /** PrivateFunction: _sendTerminate
     *  _Private_ function to send initial disconnect sequence.
     *
     *  This is the first step in a graceful disconnect.  It sends
     *  the BOSH server a terminate body and includes an unavailable
     *  presence if authentication has completed.
     */
    _sendTerminate: function (pres)
    {
        Strophe.info("_sendTerminate was called");
        var body = this._buildBody().attrs({type: "terminate"});

        if (pres) {
            body.cnode(pres.tree());
        }

        var req = new Strophe.Request(body.tree(),
                                      this._onRequestStateChange.bind(
                                          this, this._conn._dataRecv.bind(this._conn)),
                                      body.tree().getAttribute("rid"));

        this._requests.push(req);
        this._throttledRequestHandler();
    },

    /** PrivateFunction: _send
     *  _Private_ part of the Connection.send function for BOSH
     *
     * Just triggers the RequestHandler to send the messages that are in the queue
     */
    _send: function () {
        clearTimeout(this._conn._idleTimeout);
        this._throttledRequestHandler();
        this._conn._idleTimeout = setTimeout(this._conn._onIdle.bind(this._conn), 100);
    },

    /** PrivateFunction: _sendRestart
     *
     *  Send an xmpp:restart stanza.
     */
    _sendRestart: function ()
    {
        this._throttledRequestHandler();
        clearTimeout(this._conn._idleTimeout);
    },

    /** PrivateFunction: _throttledRequestHandler
     *  _Private_ function to throttle requests to the connection window.
     *
     *  This function makes sure we don't send requests so fast that the
     *  request ids overflow the connection window in the case that one
     *  request died.
     */
    _throttledRequestHandler: function ()
    {
        if (!this._requests) {
            Strophe.debug("_throttledRequestHandler called with " +
                          "undefined requests");
        } else {
            Strophe.debug("_throttledRequestHandler called with " +
                          this._requests.length + " requests");
        }

        if (!this._requests || this._requests.length === 0) {
            return;
        }

        if (this._requests.length > 0) {
            this._processRequest(0);
        }

        if (this._requests.length > 1 &&
            Math.abs(this._requests[0].rid -
                     this._requests[1].rid) < this.window) {
            this._processRequest(1);
        }
    }
};
return Strophe;
}));

/*
    This program is distributed under the terms of the MIT license.
    Please see the LICENSE file for details.

    Copyright 2006-2008, OGG, LLC
*/

/* jshint undef: true, unused: true:, noarg: true, latedef: true */
/* global define, window, clearTimeout, WebSocket, DOMParser, Strophe, $build */

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('strophe-websocket',['strophe-core'], function (core) {
            return factory(
                core.Strophe,
                core.$build
            );
        });
    } else {
        // Browser globals
        return factory(Strophe, $build);
    }
}(this, function (Strophe, $build) {

/** Class: Strophe.WebSocket
 *  _Private_ helper class that handles WebSocket Connections
 *
 *  The Strophe.WebSocket class is used internally by Strophe.Connection
 *  to encapsulate WebSocket sessions. It is not meant to be used from user's code.
 */

/** File: websocket.js
 *  A JavaScript library to enable XMPP over Websocket in Strophejs.
 *
 *  This file implements XMPP over WebSockets for Strophejs.
 *  If a Connection is established with a Websocket url (ws://...)
 *  Strophe will use WebSockets.
 *  For more information on XMPP-over-WebSocket see RFC 7395:
 *  http://tools.ietf.org/html/rfc7395
 *
 *  WebSocket support implemented by Andreas Guth (andreas.guth@rwth-aachen.de)
 */

/** PrivateConstructor: Strophe.Websocket
 *  Create and initialize a Strophe.WebSocket object.
 *  Currently only sets the connection Object.
 *
 *  Parameters:
 *    (Strophe.Connection) connection - The Strophe.Connection that will use WebSockets.
 *
 *  Returns:
 *    A new Strophe.WebSocket object.
 */
Strophe.Websocket = function(connection) {
    this._conn = connection;
    this.strip = "wrapper";

    var service = connection.service;
    if (service.indexOf("ws:") !== 0 && service.indexOf("wss:") !== 0) {
        // If the service is not an absolute URL, assume it is a path and put the absolute
        // URL together from options, current URL and the path.
        var new_service = "";

        if (connection.options.protocol === "ws" && window.location.protocol !== "https:") {
            new_service += "ws";
        } else {
            new_service += "wss";
        }

        new_service += "://" + window.location.host;

        if (service.indexOf("/") !== 0) {
            new_service += window.location.pathname + service;
        } else {
            new_service += service;
        }

        connection.service = new_service;
    }
};

Strophe.Websocket.prototype = {
    /** PrivateFunction: _buildStream
     *  _Private_ helper function to generate the <stream> start tag for WebSockets
     *
     *  Returns:
     *    A Strophe.Builder with a <stream> element.
     */
    _buildStream: function ()
    {
        return $build("open", {
            "xmlns": Strophe.NS.FRAMING,
            "to": this._conn.domain,
            "version": '1.0'
        });
    },

    /** PrivateFunction: _check_streamerror
     * _Private_ checks a message for stream:error
     *
     *  Parameters:
     *    (Strophe.Request) bodyWrap - The received stanza.
     *    connectstatus - The ConnectStatus that will be set on error.
     *  Returns:
     *     true if there was a streamerror, false otherwise.
     */
    _check_streamerror: function (bodyWrap, connectstatus) {
        var errors = bodyWrap.getElementsByTagNameNS(Strophe.NS.STREAM, "error");
        if (errors.length === 0) {
            return false;
        }
        var error = errors[0];

        var condition = "";
        var text = "";

        var ns = "urn:ietf:params:xml:ns:xmpp-streams";
        for (var i = 0; i < error.childNodes.length; i++) {
            var e = error.childNodes[i];
            if (e.getAttribute("xmlns") !== ns) {
                break;
            } if (e.nodeName === "text") {
                text = e.textContent;
            } else {
                condition = e.nodeName;
            }
        }

        var errorString = "WebSocket stream error: ";

        if (condition) {
            errorString += condition;
        } else {
            errorString += "unknown";
        }

        if (text) {
            errorString += " - " + condition;
        }

        Strophe.error(errorString);

        // close the connection on stream_error
        this._conn._changeConnectStatus(connectstatus, condition);
        this._conn._doDisconnect();
        return true;
    },

    /** PrivateFunction: _reset
     *  Reset the connection.
     *
     *  This function is called by the reset function of the Strophe Connection.
     *  Is not needed by WebSockets.
     */
    _reset: function ()
    {
        return;
    },

    /** PrivateFunction: _connect
     *  _Private_ function called by Strophe.Connection.connect
     *
     *  Creates a WebSocket for a connection and assigns Callbacks to it.
     *  Does nothing if there already is a WebSocket.
     */
    _connect: function () {
        // Ensure that there is no open WebSocket from a previous Connection.
        this._closeSocket();

        // Create the new WobSocket
        this.socket = new WebSocket(this._conn.service, "xmpp");
        this.socket.onopen = this._onOpen.bind(this);
        this.socket.onerror = this._onError.bind(this);
        this.socket.onclose = this._onClose.bind(this);
        this.socket.onmessage = this._connect_cb_wrapper.bind(this);
    },

    /** PrivateFunction: _connect_cb
     *  _Private_ function called by Strophe.Connection._connect_cb
     *
     * checks for stream:error
     *
     *  Parameters:
     *    (Strophe.Request) bodyWrap - The received stanza.
     */
    _connect_cb: function(bodyWrap) {
        var error = this._check_streamerror(bodyWrap, Strophe.Status.CONNFAIL);
        if (error) {
            return Strophe.Status.CONNFAIL;
        }
    },

    /** PrivateFunction: _handleStreamStart
     * _Private_ function that checks the opening <open /> tag for errors.
     *
     * Disconnects if there is an error and returns false, true otherwise.
     *
     *  Parameters:
     *    (Node) message - Stanza containing the <open /> tag.
     */
    _handleStreamStart: function(message) {
        var error = false;

        // Check for errors in the <open /> tag
        var ns = message.getAttribute("xmlns");
        if (typeof ns !== "string") {
            error = "Missing xmlns in <open />";
        } else if (ns !== Strophe.NS.FRAMING) {
            error = "Wrong xmlns in <open />: " + ns;
        }

        var ver = message.getAttribute("version");
        if (typeof ver !== "string") {
            error = "Missing version in <open />";
        } else if (ver !== "1.0") {
            error = "Wrong version in <open />: " + ver;
        }

        if (error) {
            this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, error);
            this._conn._doDisconnect();
            return false;
        }

        return true;
    },

    /** PrivateFunction: _connect_cb_wrapper
     * _Private_ function that handles the first connection messages.
     *
     * On receiving an opening stream tag this callback replaces itself with the real
     * message handler. On receiving a stream error the connection is terminated.
     */
    _connect_cb_wrapper: function(message) {
        if (message.data.indexOf("<open ") === 0 || message.data.indexOf("<?xml") === 0) {
            // Strip the XML Declaration, if there is one
            var data = message.data.replace(/^(<\?.*?\?>\s*)*/, "");
            if (data === '') return;

            var streamStart = new DOMParser().parseFromString(data, "text/xml").documentElement;
            this._conn.xmlInput(streamStart);
            this._conn.rawInput(message.data);

            //_handleStreamSteart will check for XML errors and disconnect on error
            if (this._handleStreamStart(streamStart)) {
                //_connect_cb will check for stream:error and disconnect on error
                this._connect_cb(streamStart);
            }
        } else if (message.data.indexOf("<close ") === 0) { //'<close xmlns="urn:ietf:params:xml:ns:xmpp-framing />') {
            this._conn.rawInput(message.data);
            this._conn.xmlInput(message);
            var see_uri = message.getAttribute("see-other-uri");
            if (see_uri) {
                this._conn._changeConnectStatus(Strophe.Status.REDIRECT, "Received see-other-uri, resetting connection");
                this._conn.reset();
                this._conn.service = see_uri;
                this._connect();
            } else {
                this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "Received closing stream");
                this._conn._doDisconnect();
            }
        } else {
            var string = this._streamWrap(message.data);
            var elem = new DOMParser().parseFromString(string, "text/xml").documentElement;
            this.socket.onmessage = this._onMessage.bind(this);
            this._conn._connect_cb(elem, null, message.data);
        }
    },

    /** PrivateFunction: _disconnect
     *  _Private_ function called by Strophe.Connection.disconnect
     *
     *  Disconnects and sends a last stanza if one is given
     *
     *  Parameters:
     *    (Request) pres - This stanza will be sent before disconnecting.
     */
    _disconnect: function (pres)
    {
        if (this.socket && this.socket.readyState !== WebSocket.CLOSED) {
            if (pres) {
                this._conn.send(pres);
            }
            var close = $build("close", { "xmlns": Strophe.NS.FRAMING, });
            this._conn.xmlOutput(close);
            var closeString = Strophe.serialize(close);
            this._conn.rawOutput(closeString);
            try {
                this.socket.send(closeString);
            } catch (e) {
                Strophe.info("Couldn't send <close /> tag.");
            }
        }
        this._conn._doDisconnect();
    },

    /** PrivateFunction: _doDisconnect
     *  _Private_ function to disconnect.
     *
     *  Just closes the Socket for WebSockets
     */
    _doDisconnect: function ()
    {
        Strophe.info("WebSockets _doDisconnect was called");
        this._closeSocket();
    },

    /** PrivateFunction _streamWrap
     *  _Private_ helper function to wrap a stanza in a <stream> tag.
     *  This is used so Strophe can process stanzas from WebSockets like BOSH
     */
    _streamWrap: function (stanza)
    {
        return "<wrapper>" + stanza + '</wrapper>';
    },


    /** PrivateFunction: _closeSocket
     *  _Private_ function to close the WebSocket.
     *
     *  Closes the socket if it is still open and deletes it
     */
    _closeSocket: function ()
    {
        if (this.socket) { try {
            this.socket.close();
        } catch (e) {} }
        this.socket = null;
    },

    /** PrivateFunction: _emptyQueue
     * _Private_ function to check if the message queue is empty.
     *
     *  Returns:
     *    True, because WebSocket messages are send immediately after queueing.
     */
    _emptyQueue: function ()
    {
        return true;
    },

    /** PrivateFunction: _onClose
     * _Private_ function to handle websockets closing.
     *
     * Nothing to do here for WebSockets
     */
    _onClose: function() {
        if(this._conn.connected && !this._conn.disconnecting) {
            Strophe.error("Websocket closed unexcectedly");
            this._conn._doDisconnect();
        } else {
            Strophe.info("Websocket closed");
        }
    },

    /** PrivateFunction: _no_auth_received
     *
     * Called on stream start/restart when no stream:features
     * has been received.
     */
    _no_auth_received: function (_callback)
    {
        Strophe.error("Server did not send any auth methods");
        this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "Server did not send any auth methods");
        if (_callback) {
            _callback = _callback.bind(this._conn);
            _callback();
        }
        this._conn._doDisconnect();
    },

    /** PrivateFunction: _onDisconnectTimeout
     *  _Private_ timeout handler for handling non-graceful disconnection.
     *
     *  This does nothing for WebSockets
     */
    _onDisconnectTimeout: function () {},

    /** PrivateFunction: _abortAllRequests
     *  _Private_ helper function that makes sure all pending requests are aborted.
     */
    _abortAllRequests: function () {},

    /** PrivateFunction: _onError
     * _Private_ function to handle websockets errors.
     *
     * Parameters:
     * (Object) error - The websocket error.
     */
    _onError: function(error) {
        Strophe.error("Websocket error " + error);
        this._conn._changeConnectStatus(Strophe.Status.CONNFAIL, "The WebSocket connection could not be established was disconnected.");
        this._disconnect();
    },

    /** PrivateFunction: _onIdle
     *  _Private_ function called by Strophe.Connection._onIdle
     *
     *  sends all queued stanzas
     */
    _onIdle: function () {
        var data = this._conn._data;
        if (data.length > 0 && !this._conn.paused) {
            for (var i = 0; i < data.length; i++) {
                if (data[i] !== null) {
                    var stanza, rawStanza;
                    if (data[i] === "restart") {
                        stanza = this._buildStream().tree();
                    } else {
                        stanza = data[i];
                    }
                    rawStanza = Strophe.serialize(stanza);
                    this._conn.xmlOutput(stanza);
                    this._conn.rawOutput(rawStanza);
                    this.socket.send(rawStanza);
                }
            }
            this._conn._data = [];
        }
    },

    /** PrivateFunction: _onMessage
     * _Private_ function to handle websockets messages.
     *
     * This function parses each of the messages as if they are full documents. [TODO : We may actually want to use a SAX Push parser].
     *
     * Since all XMPP traffic starts with "<stream:stream version='1.0' xml:lang='en' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='3697395463' from='SERVER'>"
     * The first stanza will always fail to be parsed...
     * Addtionnaly, the seconds stanza will always be a <stream:features> with the stream NS defined in the previous stanza... so we need to 'force' the inclusion of the NS in this stanza!
     *
     * Parameters:
     * (string) message - The websocket message.
     */
    _onMessage: function(message) {
        var elem, data;
        // check for closing stream
        var close = '<close xmlns="urn:ietf:params:xml:ns:xmpp-framing" />';
        if (message.data === close) {
            this._conn.rawInput(close);
            this._conn.xmlInput(message);
            if (!this._conn.disconnecting) {
                this._conn._doDisconnect();
            }
            return;
        } else if (message.data.search("<open ") === 0) {
            // This handles stream restarts
            elem = new DOMParser().parseFromString(message.data, "text/xml").documentElement;

            if (!this._handleStreamStart(elem)) {
                return;
            }
        } else {
            data = this._streamWrap(message.data);
            elem = new DOMParser().parseFromString(data, "text/xml").documentElement;
        }

        if (this._check_streamerror(elem, Strophe.Status.ERROR)) {
            return;
        }

        //handle unavailable presence stanza before disconnecting
        if (this._conn.disconnecting &&
                elem.firstChild.nodeName === "presence" &&
                elem.firstChild.getAttribute("type") === "unavailable") {
            this._conn.xmlInput(elem);
            this._conn.rawInput(Strophe.serialize(elem));
            // if we are already disconnecting we will ignore the unavailable stanza and
            // wait for the </stream:stream> tag before we close the connection
            return;
        }
        this._conn._dataRecv(elem, message.data);
    },

    /** PrivateFunction: _onOpen
     * _Private_ function to handle websockets connection setup.
     *
     * The opening stream tag is sent here.
     */
    _onOpen: function() {
        Strophe.info("Websocket open");
        var start = this._buildStream();
        this._conn.xmlOutput(start.tree());

        var startString = Strophe.serialize(start);
        this._conn.rawOutput(startString);
        this.socket.send(startString);
    },

    /** PrivateFunction: _reqToData
     * _Private_ function to get a stanza out of a request.
     *
     * WebSockets don't use requests, so the passed argument is just returned.
     *
     *  Parameters:
     *    (Object) stanza - The stanza.
     *
     *  Returns:
     *    The stanza that was passed.
     */
    _reqToData: function (stanza)
    {
        return stanza;
    },

    /** PrivateFunction: _send
     *  _Private_ part of the Connection.send function for WebSocket
     *
     * Just flushes the messages that are in the queue
     */
    _send: function () {
        this._conn.flush();
    },

    /** PrivateFunction: _sendRestart
     *
     *  Send an xmpp:restart stanza.
     */
    _sendRestart: function ()
    {
        clearTimeout(this._conn._idleTimeout);
        this._conn._onIdle.bind(this._conn)();
    }
};
return Strophe;
}));

define("strophe", [
    "strophe-core",
    "strophe-bosh",
    "strophe-websocket"
], function (wrapper) {
    return wrapper;
});

/*
  Copyright 2010, François de Metz <francois@2metz.fr>
*/
/**
 * Roster Plugin
 * Allow easily roster management
 *
 *  Features
 *  * Get roster from server
 *  * handle presence
 *  * handle roster iq
 *  * subscribe/unsubscribe
 *  * authorize/unauthorize
 *  * roster versioning (xep 237)
 */
(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('strophe.roster',[
            "strophe"
        ], function (Strophe) {
            factory(
                Strophe.Strophe,
                Strophe.$build,
                Strophe.$iq ,
                Strophe.$msg,
                Strophe.$pres
            );
            return Strophe;
        });
    } else {
        // Browser globals
        factory(
            root.Strophe,
            root.$build,
            root.$iq ,
            root.$msg,
            root.$pres
        );
    }
}(this, function (Strophe, $build, $iq, $msg, $pres) {

    Strophe.addConnectionPlugin('roster', {
        /** Function: init
        * Plugin init
        *
        * Parameters:
        *   (Strophe.Connection) conn - Strophe connection
        */
        init: function(conn) {
            this._connection = conn;
            this._callbacks = [];
            /** Property: items
            *  Roster items
            *  [
            *    {
            *        name         : "",
            *        jid          : "",
            *        subscription : "",
            *        ask          : "",
            *        groups       : ["", ""],
            *        resources    : {
            *            myresource : {
            *                show   : "",
            *                status : "",
            *                priority : ""
            *            }
            *        }
            *    }
            * ]
            */
            this.items = [];
            /** Property: ver
            * current roster revision
            * always null if server doesn't support xep 237
            */
            this.ver = null;
            // Override the connect and attach methods to always add presence and roster handlers.
            // They are removed when the connection disconnects, so must be added on connection.
            var oldCallback, roster = this, _connect = conn.connect, _attach = conn.attach;
            var newCallback = function(status) {
                if (status == Strophe.Status.ATTACHED || status == Strophe.Status.CONNECTED) {
                    try {
                        // Presence subscription
                        conn.addHandler(roster._onReceivePresence.bind(roster), null, 'presence', null, null, null);
                        conn.addHandler(roster._onReceiveIQ.bind(roster), Strophe.NS.ROSTER, 'iq', "set", null, null);
                    }
                    catch (e) {
                        Strophe.error(e);
                    }
                }
                if (typeof oldCallback === "function") {
                    oldCallback.apply(this, arguments);
                }
            };

            conn.connect = function(jid, pass, callback, wait, hold, route) {
                oldCallback = callback;
                if (typeof jid  == "undefined")
                    jid  = null;
                if (typeof pass == "undefined")
                    pass = null;
                callback = newCallback;
                _connect.apply(conn, [jid, pass, callback, wait, hold, route]);
            };

            conn.attach = function(jid, sid, rid, callback, wait, hold, wind) {
                oldCallback = callback;
                if (typeof jid == "undefined")
                    jid = null;
                if (typeof sid == "undefined")
                    sid = null;
                if (typeof rid == "undefined")
                    rid = null;
                callback = newCallback;
                _attach.apply(conn, [jid, sid, rid, callback, wait, hold, wind]);
            };

            Strophe.addNamespace('ROSTER_VER', 'urn:xmpp:features:rosterver');
            Strophe.addNamespace('NICK', 'http://jabber.org/protocol/nick');
        },

        /** Function: supportVersioning
        * return true if roster versioning is enabled on server
        */
        supportVersioning: function() {
            return (this._connection.features && this._connection.features.getElementsByTagName('ver').length > 0);
        },

        /** Function: get
        * Get Roster on server
        *
        * Parameters:
        *   (Function) userCallback - callback on roster result
        *   (String) ver - current rev of roster
        *      (only used if roster versioning is enabled)
        *   (Array) items - initial items of ver
        *      (only used if roster versioning is enabled)
        *     In browser context you can use sessionStorage
        *     to store your roster in json (JSON.stringify())
        */
        get: function(userCallback, ver, items) {
            var attrs = {xmlns: Strophe.NS.ROSTER};
            if (this.supportVersioning()) {
                // empty rev because i want an rev attribute in the result
                attrs.ver = ver || '';
                this.items = items || [];
            }
            var iq = $iq({type: 'get',  'id' : this._connection.getUniqueId('roster')}).c('query', attrs);
            return this._connection.sendIQ(iq,
                                    this._onReceiveRosterSuccess.bind(this, userCallback),
                                    this._onReceiveRosterError.bind(this, userCallback));
        },

        /** Function: registerCallback
        * register callback on roster (presence and iq)
        *
        * Parameters:
        *   (Function) call_back
        */
        registerCallback: function(call_back) {
            this._callbacks.push(call_back);
        },

        /** Function: findItem
        * Find item by JID
        *
        * Parameters:
        *     (String) jid
        */
        findItem : function(jid) {
            try {
                for (var i = 0; i < this.items.length; i++) {
                    if (this.items[i] && this.items[i].jid == jid) {
                        return this.items[i];
                    }
                }
            } catch (e) {
                Strophe.error(e);
            }
            return false;
        },

        /** Function: removeItem
        * Remove item by JID
        *
        * Parameters:
        *     (String) jid
        */
        removeItem : function(jid) {
            for (var i = 0; i < this.items.length; i++) {
                if (this.items[i] && this.items[i].jid == jid) {
                    this.items.splice(i, 1);
                    return true;
                }
            }
            return false;
        },

        /** Function: subscribe
        * Subscribe presence
        *
        * Parameters:
        *     (String) jid
        *     (String) message (optional)
        *     (String) nick  (optional)
        */
        subscribe: function(jid, message, nick) {
            var pres = $pres({to: jid, type: "subscribe"});
            if (message && message !== "") {
                pres.c("status").t(message).up();
            }
            if (nick && nick !== "") {
                pres.c('nick', {'xmlns': Strophe.NS.NICK}).t(nick).up();
            }
            this._connection.send(pres);
        },

        /** Function: unsubscribe
        * Unsubscribe presence
        *
        * Parameters:
        *     (String) jid
        *     (String) message
        */
        unsubscribe: function(jid, message) {
            var pres = $pres({to: jid, type: "unsubscribe"});
            if (message && message !== "")
                pres.c("status").t(message);
            this._connection.send(pres);
        },

        /** Function: authorize
        * Authorize presence subscription
        *
        * Parameters:
        *     (String) jid
        *     (String) message
        */
        authorize: function(jid, message) {
            var pres = $pres({to: jid, type: "subscribed"});
            if (message && message !== "")
                pres.c("status").t(message);
            this._connection.send(pres);
        },

        /** Function: unauthorize
        * Unauthorize presence subscription
        *
        * Parameters:
        *     (String) jid
        *     (String) message
        */
        unauthorize: function(jid, message) {
            var pres = $pres({to: jid, type: "unsubscribed"});
            if (message && message !== "")
                pres.c("status").t(message);
            this._connection.send(pres);
        },

        /** Function: add
        * Add roster item
        *
        * Parameters:
        *   (String) jid - item jid
        *   (String) name - name
        *   (Array) groups
        *   (Function) call_back
        */
        add: function(jid, name, groups, call_back) {
            var iq = $iq({type: 'set'}).c('query', {xmlns: Strophe.NS.ROSTER}).c('item', {jid: jid,
                                                                                        name: name});
            for (var i = 0; i < groups.length; i++) {
                iq.c('group').t(groups[i]).up();
            }
            this._connection.sendIQ(iq, call_back, call_back);
        },

        /** Function: update
        * Update roster item
        *
        * Parameters:
        *   (String) jid - item jid
        *   (String) name - name
        *   (Array) groups
        *   (Function) call_back
        */
        update: function(jid, name, groups, call_back) {
            var item = this.findItem(jid);
            if (!item) {
                throw "item not found";
            }
            var newName = name || item.name;
            var newGroups = groups || item.groups;
            var iq = $iq({type: 'set'}).c('query', {xmlns: Strophe.NS.ROSTER}).c('item', {jid: item.jid,
                                                                                        name: newName});
            for (var i = 0; i < newGroups.length; i++) {
                iq.c('group').t(newGroups[i]).up();
            }
            return this._connection.sendIQ(iq, call_back, call_back);
        },

        /** Function: remove
        * Remove roster item
        *
        * Parameters:
        *   (String) jid - item jid
        *   (Function) call_back
        */
        remove: function(jid, call_back) {
            var item = this.findItem(jid);
            if (!item) {
                throw "item not found";
            }
            var iq = $iq({type: 'set'}).c('query', {xmlns: Strophe.NS.ROSTER}).c('item', {jid: item.jid,
                                                                                        subscription: "remove"});
            this._connection.sendIQ(iq, call_back, call_back);
        },

        /** PrivateFunction: _onReceiveRosterSuccess
        *
        */
        _onReceiveRosterSuccess: function(userCallback, stanza) {
            this._updateItems(stanza);
            if (typeof userCallback === "function") {
                userCallback(this.items);
            }
        },

        /** PrivateFunction: _onReceiveRosterError
        *
        */
        _onReceiveRosterError: function(userCallback, stanza) {
            userCallback(this.items);
        },

        /** PrivateFunction: _onReceivePresence
        * Handle presence
        */
        _onReceivePresence : function(presence) {
            // TODO: from is optional
            var jid = presence.getAttribute('from');
            var from = Strophe.getBareJidFromJid(jid);
            var item = this.findItem(from);
            // not in roster
            if (!item) {
                return true;
            }
            var type = presence.getAttribute('type');
            if (type == 'unavailable') {
                delete item.resources[Strophe.getResourceFromJid(jid)];
            } else if (!type) {
                // TODO: add timestamp
                item.resources[Strophe.getResourceFromJid(jid)] = {
                    show     : (presence.getElementsByTagName('show').length !== 0) ? Strophe.getText(presence.getElementsByTagName('show')[0]) : "",
                    status   : (presence.getElementsByTagName('status').length !== 0) ? Strophe.getText(presence.getElementsByTagName('status')[0]) : "",
                    priority : (presence.getElementsByTagName('priority').length !== 0) ? Strophe.getText(presence.getElementsByTagName('priority')[0]) : ""
                };
            } else {
                // Stanza is not a presence notification. (It's probably a subscription type stanza.)
                return true;
            }
            this._call_backs(this.items, item);
            return true;
        },

        /** PrivateFunction: _call_backs
        *
        */
        _call_backs : function(items, item) {
            for (var i = 0; i < this._callbacks.length; i++) {
                this._callbacks[i](items, item);
            }
        },

        /** PrivateFunction: _onReceiveIQ
        * Handle roster push.
        */
        _onReceiveIQ : function(iq) {
            var id = iq.getAttribute('id');
            var from = iq.getAttribute('from');
            // Receiving client MUST ignore stanza unless it has no from or from = user's JID.
            if (from && from !== "" && from != this._connection.jid && from != Strophe.getBareJidFromJid(this._connection.jid))
                return true;
            var iqresult = $iq({type: 'result', id: id, from: this._connection.jid});
            this._connection.send(iqresult);
            this._updateItems(iq);
            return true;
        },
        /** PrivateFunction: _updateItems
        * Update items from iq
        */
        _updateItems : function(iq) {
            var query = iq.getElementsByTagName('query');
            if (query.length !== 0) {
                this.ver = query.item(0).getAttribute('ver');
                var self = this;
                Strophe.forEachChild(query.item(0), 'item',
                    function (item) {
                        self._updateItem(item);
                    }
            );
            }
            this._call_backs(this.items);
        },

        /** PrivateFunction: _updateItem
        * Update internal representation of roster item
        */
        _updateItem : function(item) {
            var jid           = item.getAttribute("jid");
            var name          = item.getAttribute("name");
            var subscription  = item.getAttribute("subscription");
            var ask           = item.getAttribute("ask");
            var groups        = [];
            Strophe.forEachChild(item, 'group',
                function(group) {
                    groups.push(Strophe.getText(group));
                }
            );

            if (subscription == "remove") {
                this.removeItem(jid);
                return;
            }

            item = this.findItem(jid);
            if (!item) { this.items.push({
                    name         : name,
                    jid          : jid,
                    subscription : subscription,
                    ask          : ask,
                    groups       : groups,
                    resources    : {}
                });
            } else {
                item.name = name;
                item.subscription = subscription;
                item.ask = ask;
                item.groups = groups;
            }
        }
    });
}));

/* Plugin to implement the vCard extension.
 *  http://xmpp.org/extensions/xep-0054.html
 *
 *  Author: Nathan Zorn (nathan.zorn@gmail.com)
 *  AMD support by JC Brand
 */

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('strophe.vcard',[
            "strophe"
        ], function (Strophe) {
            factory(
                Strophe.Strophe,
                Strophe.$build,
                Strophe.$iq ,
                Strophe.$msg,
                Strophe.$pres
            );
            return Strophe;
        });
    } else {
        // Browser globals
        factory(
            root.Strophe,
            root.$build,
            root.$iq ,
            root.$msg,
            root.$pres
        );
    }
}(this, function (Strophe, $build, $iq, $msg, $pres) {

    var buildIq = function(type, jid, vCardEl) {
        var iq = $iq(jid ? {type: type, to: jid} : {type: type});
        iq.c("vCard", {xmlns: Strophe.NS.VCARD});
        if (vCardEl) {
            iq.cnode(vCardEl);
        }
        return iq;
    };

    Strophe.addConnectionPlugin('vcard', {
        _connection: null,
        init: function(conn) {
            this._connection = conn;
            return Strophe.addNamespace('VCARD', 'vcard-temp');
        },

        /*Function
        Retrieve a vCard for a JID/Entity
        Parameters:
        (Function) handler_cb - The callback function used to handle the request.
        (String) jid - optional - The name of the entity to request the vCard
            If no jid is given, this function retrieves the current user's vcard.
        */
        get: function(handler_cb, jid, error_cb) {
            var iq = buildIq("get", jid);
            return this._connection.sendIQ(iq, handler_cb, error_cb);
        },

        /* Function
            Set an entity's vCard.
        */
        set: function(handler_cb, vCardEl, jid, error_cb) {
            var iq = buildIq("set", jid, vCardEl);
            return this._connection.sendIQ(iq, handler_cb, error_cb);
        }
    });
}));

/*
  Copyright 2010, François de Metz <francois@2metz.fr>
*/

/**
 * Disco Strophe Plugin
 * Implement http://xmpp.org/extensions/xep-0030.html
 * TODO: manage node hierarchies, and node on info request
 */

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('strophe.disco',[
            "strophe"
        ], function (Strophe) {
            factory(
                Strophe.Strophe,
                Strophe.$build,
                Strophe.$iq ,
                Strophe.$msg,
                Strophe.$pres
            );
            return Strophe;
        });
    } else {
        // Browser globals
        factory(
            root.Strophe,
            root.$build,
            root.$iq ,
            root.$msg,
            root.$pres
        );
    }
}(this, function (Strophe, $build, $iq, $msg, $pres) {

Strophe.addConnectionPlugin('disco',
{
    _connection: null,
    _identities : [],
    _features : [],
    _items : [],
    /** Function: init
     * Plugin init
     *
     * Parameters:
     *   (Strophe.Connection) conn - Strophe connection
     */
    init: function(conn)
    {
    this._connection = conn;
        this._identities = [];
        this._features   = [];
        this._items      = [];
        // disco info
        conn.addHandler(this._onDiscoInfo.bind(this), Strophe.NS.DISCO_INFO, 'iq', 'get', null, null);
        // disco items
        conn.addHandler(this._onDiscoItems.bind(this), Strophe.NS.DISCO_ITEMS, 'iq', 'get', null, null);
    },
    /** Function: addIdentity
     * See http://xmpp.org/registrar/disco-categories.html
     * Parameters:
     *   (String) category - category of identity (like client, automation, etc ...)
     *   (String) type - type of identity (like pc, web, bot , etc ...)
     *   (String) name - name of identity in natural language
     *   (String) lang - lang of name parameter
     *
     * Returns:
     *   Boolean
     */
    addIdentity: function(category, type, name, lang)
    {
        for (var i=0; i<this._identities.length; i++)
        {
            if (this._identities[i].category == category &&
                this._identities[i].type == type &&
                this._identities[i].name == name &&
                this._identities[i].lang == lang)
            {
                return false;
            }
        }
        this._identities.push({category: category, type: type, name: name, lang: lang});
        return true;
    },
    /** Function: addFeature
     *
     * Parameters:
     *   (String) var_name - feature name (like jabber:iq:version)
     *
     * Returns:
     *   boolean
     */
    addFeature: function(var_name)
    {
        for (var i=0; i<this._features.length; i++)
        {
             if (this._features[i] == var_name)
                 return false;
        }
        this._features.push(var_name);
        return true;
    },
    /** Function: removeFeature
     *
     * Parameters:
     *   (String) var_name - feature name (like jabber:iq:version)
     *
     * Returns:
     *   boolean
     */
    removeFeature: function(var_name)
    {
        for (var i=0; i<this._features.length; i++)
        {
             if (this._features[i] === var_name){
                 this._features.splice(i,1);
                 return true;
             }
        }
        return false;
    },
    /** Function: addItem
     *
     * Parameters:
     *   (String) jid
     *   (String) name
     *   (String) node
     *   (Function) call_back
     *
     * Returns:
     *   boolean
     */
    addItem: function(jid, name, node, call_back)
    {
        if (node && !call_back)
            return false;
        this._items.push({jid: jid, name: name, node: node, call_back: call_back});
        return true;
    },
    /** Function: info
     * Info query
     *
     * Parameters:
     *   (Function) call_back
     *   (String) jid
     *   (String) node
     */
    info: function(jid, node, success, error, timeout)
    {
        var attrs = {xmlns: Strophe.NS.DISCO_INFO};
        if (node)
            attrs.node = node;

        var info = $iq({from:this._connection.jid,
                         to:jid, type:'get'}).c('query', attrs);
        this._connection.sendIQ(info, success, error, timeout);
    },
    /** Function: items
     * Items query
     *
     * Parameters:
     *   (Function) call_back
     *   (String) jid
     *   (String) node
     */
    items: function(jid, node, success, error, timeout)
    {
        var attrs = {xmlns: Strophe.NS.DISCO_ITEMS};
        if (node)
            attrs.node = node;

        var items = $iq({from:this._connection.jid,
                         to:jid, type:'get'}).c('query', attrs);
        this._connection.sendIQ(items, success, error, timeout);
    },

    /** PrivateFunction: _buildIQResult
     */
    _buildIQResult: function(stanza, query_attrs)
    {
        var id   =  stanza.getAttribute('id');
        var from = stanza.getAttribute('from');
        var iqresult = $iq({type: 'result', id: id});

        if (from !== null) {
            iqresult.attrs({to: from});
        }

        return iqresult.c('query', query_attrs);
    },

    /** PrivateFunction: _onDiscoInfo
     * Called when receive info request
     */
    _onDiscoInfo: function(stanza)
    {
        var node = stanza.getElementsByTagName('query')[0].getAttribute('node');
        var attrs = {xmlns: Strophe.NS.DISCO_INFO};
        var i;
        if (node)
        {
            attrs.node = node;
        }
        var iqresult = this._buildIQResult(stanza, attrs);
        for (i=0; i<this._identities.length; i++)
        {
            attrs = {category: this._identities[i].category,
                         type    : this._identities[i].type};
            if (this._identities[i].name)
                attrs.name = this._identities[i].name;
            if (this._identities[i].lang)
                attrs['xml:lang'] = this._identities[i].lang;
            iqresult.c('identity', attrs).up();
        }
        for (i=0; i<this._features.length; i++)
        {
            iqresult.c('feature', {'var':this._features[i]}).up();
        }
        this._connection.send(iqresult.tree());
        return true;
    },
    /** PrivateFunction: _onDiscoItems
     * Called when receive items request
     */
    _onDiscoItems: function(stanza)
    {
        var query_attrs = {xmlns: Strophe.NS.DISCO_ITEMS};
        var node = stanza.getElementsByTagName('query')[0].getAttribute('node');
        var items, i;
        if (node)
        {
            query_attrs.node = node;
            items = [];
            for (i = 0; i < this._items.length; i++)
            {
                if (this._items[i].node == node)
                {
                    items = this._items[i].call_back(stanza);
                    break;
                }
            }
        }
        else
        {
            items = this._items;
        }
        var iqresult = this._buildIQResult(stanza, query_attrs);
        for (i = 0; i < items.length; i++)
        {
            var attrs = {jid:  items[i].jid};
            if (items[i].name)
                attrs.name = items[i].name;
            if (items[i].node)
                attrs.node = items[i].node;
            iqresult.c('item', attrs).up();
        }
        this._connection.send(iqresult.tree());
        return true;
    }
});
}));

//     Backbone.js 1.1.2

//     (c) 2010-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
//     Backbone may be freely distributed under the MIT license.
//     For all details and documentation:
//     http://backbonejs.org

(function(root, factory) {

  // Set up Backbone appropriately for the environment. Start with AMD.
  if (typeof define === 'function' && define.amd) {
    define('backbone',['underscore', 'jquery', 'exports'], function(_, $, exports) {
      // Export global even in AMD case in case this script is loaded with
      // others that may still expect a global Backbone.
      root.Backbone = factory(root, exports, _, $);
    });

  // Next for Node.js or CommonJS. jQuery may not be needed as a module.
  } else if (typeof exports !== 'undefined') {
    var _ = require('underscore');
    factory(root, exports, _);

  // Finally, as a browser global.
  } else {
    root.Backbone = factory(root, {}, root._, (root.jQuery || root.Zepto || root.ender || root.$));
  }

}(this, function(root, Backbone, _, $) {

  // Initial Setup
  // -------------

  // Save the previous value of the `Backbone` variable, so that it can be
  // restored later on, if `noConflict` is used.
  var previousBackbone = root.Backbone;

  // Create local references to array methods we'll want to use later.
  var array = [];
  var push = array.push;
  var slice = array.slice;
  var splice = array.splice;

  // Current version of the library. Keep in sync with `package.json`.
  Backbone.VERSION = '1.1.2';

  // For Backbone's purposes, jQuery, Zepto, Ender, or My Library (kidding) owns
  // the `$` variable.
  Backbone.$ = $;

  // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
  // to its previous owner. Returns a reference to this Backbone object.
  Backbone.noConflict = function() {
    root.Backbone = previousBackbone;
    return this;
  };

  // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
  // will fake `"PATCH"`, `"PUT"` and `"DELETE"` requests via the `_method` parameter and
  // set a `X-Http-Method-Override` header.
  Backbone.emulateHTTP = false;

  // Turn on `emulateJSON` to support legacy servers that can't deal with direct
  // `application/json` requests ... will encode the body as
  // `application/x-www-form-urlencoded` instead and will send the model in a
  // form param named `model`.
  Backbone.emulateJSON = false;

  // Backbone.Events
  // ---------------

  // A module that can be mixed in to *any object* in order to provide it with
  // custom events. You may bind with `on` or remove with `off` callback
  // functions to an event; `trigger`-ing an event fires all callbacks in
  // succession.
  //
  //     var object = {};
  //     _.extend(object, Backbone.Events);
  //     object.on('expand', function(){ alert('expanded'); });
  //     object.trigger('expand');
  //
  var Events = Backbone.Events = {

    // Bind an event to a `callback` function. Passing `"all"` will bind
    // the callback to all events fired.
    on: function(name, callback, context) {
      if (!eventsApi(this, 'on', name, [callback, context]) || !callback) return this;
      this._events || (this._events = {});
      var events = this._events[name] || (this._events[name] = []);
      events.push({callback: callback, context: context, ctx: context || this});
      return this;
    },

    // Bind an event to only be triggered a single time. After the first time
    // the callback is invoked, it will be removed.
    once: function(name, callback, context) {
      if (!eventsApi(this, 'once', name, [callback, context]) || !callback) return this;
      var self = this;
      var once = _.once(function() {
        self.off(name, once);
        callback.apply(this, arguments);
      });
      once._callback = callback;
      return this.on(name, once, context);
    },

    // Remove one or many callbacks. If `context` is null, removes all
    // callbacks with that function. If `callback` is null, removes all
    // callbacks for the event. If `name` is null, removes all bound
    // callbacks for all events.
    off: function(name, callback, context) {
      var retain, ev, events, names, i, l, j, k;
      if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
      if (!name && !callback && !context) {
        this._events = void 0;
        return this;
      }
      names = name ? [name] : _.keys(this._events);
      for (i = 0, l = names.length; i < l; i++) {
        name = names[i];
        if (events = this._events[name]) {
          this._events[name] = retain = [];
          if (callback || context) {
            for (j = 0, k = events.length; j < k; j++) {
              ev = events[j];
              if ((callback && callback !== ev.callback && callback !== ev.callback._callback) ||
                  (context && context !== ev.context)) {
                retain.push(ev);
              }
            }
          }
          if (!retain.length) delete this._events[name];
        }
      }

      return this;
    },

    // Trigger one or many events, firing all bound callbacks. Callbacks are
    // passed the same arguments as `trigger` is, apart from the event name
    // (unless you're listening on `"all"`, which will cause your callback to
    // receive the true name of the event as the first argument).
    trigger: function(name) {
      if (!this._events) return this;
      var args = slice.call(arguments, 1);
      if (!eventsApi(this, 'trigger', name, args)) return this;
      var events = this._events[name];
      var allEvents = this._events.all;
      if (events) triggerEvents(events, args);
      if (allEvents) triggerEvents(allEvents, arguments);
      return this;
    },

    // Tell this object to stop listening to either specific events ... or
    // to every object it's currently listening to.
    stopListening: function(obj, name, callback) {
      var listeningTo = this._listeningTo;
      if (!listeningTo) return this;
      var remove = !name && !callback;
      if (!callback && typeof name === 'object') callback = this;
      if (obj) (listeningTo = {})[obj._listenId] = obj;
      for (var id in listeningTo) {
        obj = listeningTo[id];
        obj.off(name, callback, this);
        if (remove || _.isEmpty(obj._events)) delete this._listeningTo[id];
      }
      return this;
    }

  };

  // Regular expression used to split event strings.
  var eventSplitter = /\s+/;

  // Implement fancy features of the Events API such as multiple event
  // names `"change blur"` and jQuery-style event maps `{change: action}`
  // in terms of the existing API.
  var eventsApi = function(obj, action, name, rest) {
    if (!name) return true;

    // Handle event maps.
    if (typeof name === 'object') {
      for (var key in name) {
        obj[action].apply(obj, [key, name[key]].concat(rest));
      }
      return false;
    }

    // Handle space separated event names.
    if (eventSplitter.test(name)) {
      var names = name.split(eventSplitter);
      for (var i = 0, l = names.length; i < l; i++) {
        obj[action].apply(obj, [names[i]].concat(rest));
      }
      return false;
    }

    return true;
  };

  // A difficult-to-believe, but optimized internal dispatch function for
  // triggering events. Tries to keep the usual cases speedy (most internal
  // Backbone events have 3 arguments).
  var triggerEvents = function(events, args) {
    var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2];
    switch (args.length) {
      case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return;
      case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return;
      case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return;
      case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return;
      default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args); return;
    }
  };

  var listenMethods = {listenTo: 'on', listenToOnce: 'once'};

  // Inversion-of-control versions of `on` and `once`. Tell *this* object to
  // listen to an event in another object ... keeping track of what it's
  // listening to.
  _.each(listenMethods, function(implementation, method) {
    Events[method] = function(obj, name, callback) {
      var listeningTo = this._listeningTo || (this._listeningTo = {});
      var id = obj._listenId || (obj._listenId = _.uniqueId('l'));
      listeningTo[id] = obj;
      if (!callback && typeof name === 'object') callback = this;
      obj[implementation](name, callback, this);
      return this;
    };
  });

  // Aliases for backwards compatibility.
  Events.bind   = Events.on;
  Events.unbind = Events.off;

  // Allow the `Backbone` object to serve as a global event bus, for folks who
  // want global "pubsub" in a convenient place.
  _.extend(Backbone, Events);

  // Backbone.Model
  // --------------

  // Backbone **Models** are the basic data object in the framework --
  // frequently representing a row in a table in a database on your server.
  // A discrete chunk of data and a bunch of useful, related methods for
  // performing computations and transformations on that data.

  // Create a new model with the specified attributes. A client id (`cid`)
  // is automatically generated and assigned for you.
  var Model = Backbone.Model = function(attributes, options) {
    var attrs = attributes || {};
    options || (options = {});
    this.cid = _.uniqueId('c');
    this.attributes = {};
    if (options.collection) this.collection = options.collection;
    if (options.parse) attrs = this.parse(attrs, options) || {};
    attrs = _.defaults({}, attrs, _.result(this, 'defaults'));
    this.set(attrs, options);
    this.changed = {};
    this.initialize.apply(this, arguments);
  };

  // Attach all inheritable methods to the Model prototype.
  _.extend(Model.prototype, Events, {

    // A hash of attributes whose current and previous value differ.
    changed: null,

    // The value returned during the last failed validation.
    validationError: null,

    // The default name for the JSON `id` attribute is `"id"`. MongoDB and
    // CouchDB users may want to set this to `"_id"`.
    idAttribute: 'id',

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // Return a copy of the model's `attributes` object.
    toJSON: function(options) {
      return _.clone(this.attributes);
    },

    // Proxy `Backbone.sync` by default -- but override this if you need
    // custom syncing semantics for *this* particular model.
    sync: function() {
      return Backbone.sync.apply(this, arguments);
    },

    // Get the value of an attribute.
    get: function(attr) {
      return this.attributes[attr];
    },

    // Get the HTML-escaped value of an attribute.
    escape: function(attr) {
      return _.escape(this.get(attr));
    },

    // Returns `true` if the attribute contains a value that is not null
    // or undefined.
    has: function(attr) {
      return this.get(attr) != null;
    },

    // Set a hash of model attributes on the object, firing `"change"`. This is
    // the core primitive operation of a model, updating the data and notifying
    // anyone who needs to know about the change in state. The heart of the beast.
    set: function(key, val, options) {
      var attr, attrs, unset, changes, silent, changing, prev, current;
      if (key == null) return this;

      // Handle both `"key", value` and `{key: value}` -style arguments.
      if (typeof key === 'object') {
        attrs = key;
        options = val;
      } else {
        (attrs = {})[key] = val;
      }

      options || (options = {});

      // Run validation.
      if (!this._validate(attrs, options)) return false;

      // Extract attributes and options.
      unset           = options.unset;
      silent          = options.silent;
      changes         = [];
      changing        = this._changing;
      this._changing  = true;

      if (!changing) {
        this._previousAttributes = _.clone(this.attributes);
        this.changed = {};
      }
      current = this.attributes, prev = this._previousAttributes;

      // Check for changes of `id`.
      if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];

      // For each `set` attribute, update or delete the current value.
      for (attr in attrs) {
        val = attrs[attr];
        if (!_.isEqual(current[attr], val)) changes.push(attr);
        if (!_.isEqual(prev[attr], val)) {
          this.changed[attr] = val;
        } else {
          delete this.changed[attr];
        }
        unset ? delete current[attr] : current[attr] = val;
      }

      // Trigger all relevant attribute changes.
      if (!silent) {
        if (changes.length) this._pending = options;
        for (var i = 0, l = changes.length; i < l; i++) {
          this.trigger('change:' + changes[i], this, current[changes[i]], options);
        }
      }

      // You might be wondering why there's a `while` loop here. Changes can
      // be recursively nested within `"change"` events.
      if (changing) return this;
      if (!silent) {
        while (this._pending) {
          options = this._pending;
          this._pending = false;
          this.trigger('change', this, options);
        }
      }
      this._pending = false;
      this._changing = false;
      return this;
    },

    // Remove an attribute from the model, firing `"change"`. `unset` is a noop
    // if the attribute doesn't exist.
    unset: function(attr, options) {
      return this.set(attr, void 0, _.extend({}, options, {unset: true}));
    },

    // Clear all attributes on the model, firing `"change"`.
    clear: function(options) {
      var attrs = {};
      for (var key in this.attributes) attrs[key] = void 0;
      return this.set(attrs, _.extend({}, options, {unset: true}));
    },

    // Determine if the model has changed since the last `"change"` event.
    // If you specify an attribute name, determine if that attribute has changed.
    hasChanged: function(attr) {
      if (attr == null) return !_.isEmpty(this.changed);
      return _.has(this.changed, attr);
    },

    // Return an object containing all the attributes that have changed, or
    // false if there are no changed attributes. Useful for determining what
    // parts of a view need to be updated and/or what attributes need to be
    // persisted to the server. Unset attributes will be set to undefined.
    // You can also pass an attributes object to diff against the model,
    // determining if there *would be* a change.
    changedAttributes: function(diff) {
      if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
      var val, changed = false;
      var old = this._changing ? this._previousAttributes : this.attributes;
      for (var attr in diff) {
        if (_.isEqual(old[attr], (val = diff[attr]))) continue;
        (changed || (changed = {}))[attr] = val;
      }
      return changed;
    },

    // Get the previous value of an attribute, recorded at the time the last
    // `"change"` event was fired.
    previous: function(attr) {
      if (attr == null || !this._previousAttributes) return null;
      return this._previousAttributes[attr];
    },

    // Get all of the attributes of the model at the time of the previous
    // `"change"` event.
    previousAttributes: function() {
      return _.clone(this._previousAttributes);
    },

    // Fetch the model from the server. If the server's representation of the
    // model differs from its current attributes, they will be overridden,
    // triggering a `"change"` event.
    fetch: function(options) {
      options = options ? _.clone(options) : {};
      if (options.parse === void 0) options.parse = true;
      var model = this;
      var success = options.success;
      options.success = function(resp) {
        if (!model.set(model.parse(resp, options), options)) return false;
        if (success) success(model, resp, options);
        model.trigger('sync', model, resp, options);
      };
      wrapError(this, options);
      return this.sync('read', this, options);
    },

    // Set a hash of model attributes, and sync the model to the server.
    // If the server returns an attributes hash that differs, the model's
    // state will be `set` again.
    save: function(key, val, options) {
      var attrs, method, xhr, attributes = this.attributes;

      // Handle both `"key", value` and `{key: value}` -style arguments.
      if (key == null || typeof key === 'object') {
        attrs = key;
        options = val;
      } else {
        (attrs = {})[key] = val;
      }

      options = _.extend({validate: true}, options);

      // If we're not waiting and attributes exist, save acts as
      // `set(attr).save(null, opts)` with validation. Otherwise, check if
      // the model will be valid when the attributes, if any, are set.
      if (attrs && !options.wait) {
        if (!this.set(attrs, options)) return false;
      } else {
        if (!this._validate(attrs, options)) return false;
      }

      // Set temporary attributes if `{wait: true}`.
      if (attrs && options.wait) {
        this.attributes = _.extend({}, attributes, attrs);
      }

      // After a successful server-side save, the client is (optionally)
      // updated with the server-side state.
      if (options.parse === void 0) options.parse = true;
      var model = this;
      var success = options.success;
      options.success = function(resp) {
        // Ensure attributes are restored during synchronous saves.
        model.attributes = attributes;
        var serverAttrs = model.parse(resp, options);
        if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs);
        if (_.isObject(serverAttrs) && !model.set(serverAttrs, options)) {
          return false;
        }
        if (success) success(model, resp, options);
        model.trigger('sync', model, resp, options);
      };
      wrapError(this, options);

      method = this.isNew() ? 'create' : (options.patch ? 'patch' : 'update');
      if (method === 'patch') options.attrs = attrs;
      xhr = this.sync(method, this, options);

      // Restore attributes.
      if (attrs && options.wait) this.attributes = attributes;

      return xhr;
    },

    // Destroy this model on the server if it was already persisted.
    // Optimistically removes the model from its collection, if it has one.
    // If `wait: true` is passed, waits for the server to respond before removal.
    destroy: function(options) {
      options = options ? _.clone(options) : {};
      var model = this;
      var success = options.success;

      var destroy = function() {
        model.trigger('destroy', model, model.collection, options);
      };

      options.success = function(resp) {
        if (options.wait || model.isNew()) destroy();
        if (success) success(model, resp, options);
        if (!model.isNew()) model.trigger('sync', model, resp, options);
      };

      if (this.isNew()) {
        options.success();
        return false;
      }
      wrapError(this, options);

      var xhr = this.sync('delete', this, options);
      if (!options.wait) destroy();
      return xhr;
    },

    // Default URL for the model's representation on the server -- if you're
    // using Backbone's restful methods, override this to change the endpoint
    // that will be called.
    url: function() {
      var base =
        _.result(this, 'urlRoot') ||
        _.result(this.collection, 'url') ||
        urlError();
      if (this.isNew()) return base;
      return base.replace(/([^\/])$/, '$1/') + encodeURIComponent(this.id);
    },

    // **parse** converts a response into the hash of attributes to be `set` on
    // the model. The default implementation is just to pass the response along.
    parse: function(resp, options) {
      return resp;
    },

    // Create a new model with identical attributes to this one.
    clone: function() {
      return new this.constructor(this.attributes);
    },

    // A model is new if it has never been saved to the server, and lacks an id.
    isNew: function() {
      return !this.has(this.idAttribute);
    },

    // Check if the model is currently in a valid state.
    isValid: function(options) {
      return this._validate({}, _.extend(options || {}, { validate: true }));
    },

    // Run validation against the next complete set of model attributes,
    // returning `true` if all is well. Otherwise, fire an `"invalid"` event.
    _validate: function(attrs, options) {
      if (!options.validate || !this.validate) return true;
      attrs = _.extend({}, this.attributes, attrs);
      var error = this.validationError = this.validate(attrs, options) || null;
      if (!error) return true;
      this.trigger('invalid', this, error, _.extend(options, {validationError: error}));
      return false;
    }

  });

  // Underscore methods that we want to implement on the Model.
  var modelMethods = ['keys', 'values', 'pairs', 'invert', 'pick', 'omit'];

  // Mix in each Underscore method as a proxy to `Model#attributes`.
  _.each(modelMethods, function(method) {
    Model.prototype[method] = function() {
      var args = slice.call(arguments);
      args.unshift(this.attributes);
      return _[method].apply(_, args);
    };
  });

  // Backbone.Collection
  // -------------------

  // If models tend to represent a single row of data, a Backbone Collection is
  // more analagous to a table full of data ... or a small slice or page of that
  // table, or a collection of rows that belong together for a particular reason
  // -- all of the messages in this particular folder, all of the documents
  // belonging to this particular author, and so on. Collections maintain
  // indexes of their models, both in order, and for lookup by `id`.

  // Create a new **Collection**, perhaps to contain a specific type of `model`.
  // If a `comparator` is specified, the Collection will maintain
  // its models in sort order, as they're added and removed.
  var Collection = Backbone.Collection = function(models, options) {
    options || (options = {});
    if (options.model) this.model = options.model;
    if (options.comparator !== void 0) this.comparator = options.comparator;
    this._reset();
    this.initialize.apply(this, arguments);
    if (models) this.reset(models, _.extend({silent: true}, options));
  };

  // Default options for `Collection#set`.
  var setOptions = {add: true, remove: true, merge: true};
  var addOptions = {add: true, remove: false};

  // Define the Collection's inheritable methods.
  _.extend(Collection.prototype, Events, {

    // The default model for a collection is just a **Backbone.Model**.
    // This should be overridden in most cases.
    model: Model,

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // The JSON representation of a Collection is an array of the
    // models' attributes.
    toJSON: function(options) {
      return this.map(function(model){ return model.toJSON(options); });
    },

    // Proxy `Backbone.sync` by default.
    sync: function() {
      return Backbone.sync.apply(this, arguments);
    },

    // Add a model, or list of models to the set.
    add: function(models, options) {
      return this.set(models, _.extend({merge: false}, options, addOptions));
    },

    // Remove a model, or a list of models from the set.
    remove: function(models, options) {
      var singular = !_.isArray(models);
      models = singular ? [models] : _.clone(models);
      options || (options = {});
      var i, l, index, model;
      for (i = 0, l = models.length; i < l; i++) {
        model = models[i] = this.get(models[i]);
        if (!model) continue;
        delete this._byId[model.id];
        delete this._byId[model.cid];
        index = this.indexOf(model);
        this.models.splice(index, 1);
        this.length--;
        if (!options.silent) {
          options.index = index;
          model.trigger('remove', model, this, options);
        }
        this._removeReference(model, options);
      }
      return singular ? models[0] : models;
    },

    // Update a collection by `set`-ing a new list of models, adding new ones,
    // removing models that are no longer present, and merging models that
    // already exist in the collection, as necessary. Similar to **Model#set**,
    // the core operation for updating the data contained by the collection.
    set: function(models, options) {
      options = _.defaults({}, options, setOptions);
      if (options.parse) models = this.parse(models, options);
      var singular = !_.isArray(models);
      models = singular ? (models ? [models] : []) : _.clone(models);
      var i, l, id, model, attrs, existing, sort;
      var at = options.at;
      var targetModel = this.model;
      var sortable = this.comparator && (at == null) && options.sort !== false;
      var sortAttr = _.isString(this.comparator) ? this.comparator : null;
      var toAdd = [], toRemove = [], modelMap = {};
      var add = options.add, merge = options.merge, remove = options.remove;
      var order = !sortable && add && remove ? [] : false;

      // Turn bare objects into model references, and prevent invalid models
      // from being added.
      for (i = 0, l = models.length; i < l; i++) {
        attrs = models[i] || {};
        if (attrs instanceof Model) {
          id = model = attrs;
        } else {
          id = attrs[targetModel.prototype.idAttribute || 'id'];
        }

        // If a duplicate is found, prevent it from being added and
        // optionally merge it into the existing model.
        if (existing = this.get(id)) {
          if (remove) modelMap[existing.cid] = true;
          if (merge) {
            attrs = attrs === model ? model.attributes : attrs;
            if (options.parse) attrs = existing.parse(attrs, options);
            existing.set(attrs, options);
            if (sortable && !sort && existing.hasChanged(sortAttr)) sort = true;
          }
          models[i] = existing;

        // If this is a new, valid model, push it to the `toAdd` list.
        } else if (add) {
          model = models[i] = this._prepareModel(attrs, options);
          if (!model) continue;
          toAdd.push(model);
          this._addReference(model, options);
        }

        // Do not add multiple models with the same `id`.
        model = existing || model;
        if (order && (model.isNew() || !modelMap[model.id])) order.push(model);
        modelMap[model.id] = true;
      }

      // Remove nonexistent models if appropriate.
      if (remove) {
        for (i = 0, l = this.length; i < l; ++i) {
          if (!modelMap[(model = this.models[i]).cid]) toRemove.push(model);
        }
        if (toRemove.length) this.remove(toRemove, options);
      }

      // See if sorting is needed, update `length` and splice in new models.
      if (toAdd.length || (order && order.length)) {
        if (sortable) sort = true;
        this.length += toAdd.length;
        if (at != null) {
          for (i = 0, l = toAdd.length; i < l; i++) {
            this.models.splice(at + i, 0, toAdd[i]);
          }
        } else {
          if (order) this.models.length = 0;
          var orderedModels = order || toAdd;
          for (i = 0, l = orderedModels.length; i < l; i++) {
            this.models.push(orderedModels[i]);
          }
        }
      }

      // Silently sort the collection if appropriate.
      if (sort) this.sort({silent: true});

      // Unless silenced, it's time to fire all appropriate add/sort events.
      if (!options.silent) {
        for (i = 0, l = toAdd.length; i < l; i++) {
          (model = toAdd[i]).trigger('add', model, this, options);
        }
        if (sort || (order && order.length)) this.trigger('sort', this, options);
      }

      // Return the added (or merged) model (or models).
      return singular ? models[0] : models;
    },

    // When you have more items than you want to add or remove individually,
    // you can reset the entire set with a new list of models, without firing
    // any granular `add` or `remove` events. Fires `reset` when finished.
    // Useful for bulk operations and optimizations.
    reset: function(models, options) {
      options || (options = {});
      for (var i = 0, l = this.models.length; i < l; i++) {
        this._removeReference(this.models[i], options);
      }
      options.previousModels = this.models;
      this._reset();
      models = this.add(models, _.extend({silent: true}, options));
      if (!options.silent) this.trigger('reset', this, options);
      return models;
    },

    // Add a model to the end of the collection.
    push: function(model, options) {
      return this.add(model, _.extend({at: this.length}, options));
    },

    // Remove a model from the end of the collection.
    pop: function(options) {
      var model = this.at(this.length - 1);
      this.remove(model, options);
      return model;
    },

    // Add a model to the beginning of the collection.
    unshift: function(model, options) {
      return this.add(model, _.extend({at: 0}, options));
    },

    // Remove a model from the beginning of the collection.
    shift: function(options) {
      var model = this.at(0);
      this.remove(model, options);
      return model;
    },

    // Slice out a sub-array of models from the collection.
    slice: function() {
      return slice.apply(this.models, arguments);
    },

    // Get a model from the set by id.
    get: function(obj) {
      if (obj == null) return void 0;
      return this._byId[obj] || this._byId[obj.id] || this._byId[obj.cid];
    },

    // Get the model at the given index.
    at: function(index) {
      return this.models[index];
    },

    // Return models with matching attributes. Useful for simple cases of
    // `filter`.
    where: function(attrs, first) {
      if (_.isEmpty(attrs)) return first ? void 0 : [];
      return this[first ? 'find' : 'filter'](function(model) {
        for (var key in attrs) {
          if (attrs[key] !== model.get(key)) return false;
        }
        return true;
      });
    },

    // Return the first model with matching attributes. Useful for simple cases
    // of `find`.
    findWhere: function(attrs) {
      return this.where(attrs, true);
    },

    // Force the collection to re-sort itself. You don't need to call this under
    // normal circumstances, as the set will maintain sort order as each item
    // is added.
    sort: function(options) {
      if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
      options || (options = {});

      // Run sort based on type of `comparator`.
      if (_.isString(this.comparator) || this.comparator.length === 1) {
        this.models = this.sortBy(this.comparator, this);
      } else {
        this.models.sort(_.bind(this.comparator, this));
      }

      if (!options.silent) this.trigger('sort', this, options);
      return this;
    },

    // Pluck an attribute from each model in the collection.
    pluck: function(attr) {
      return _.invoke(this.models, 'get', attr);
    },

    // Fetch the default set of models for this collection, resetting the
    // collection when they arrive. If `reset: true` is passed, the response
    // data will be passed through the `reset` method instead of `set`.
    fetch: function(options) {
      options = options ? _.clone(options) : {};
      if (options.parse === void 0) options.parse = true;
      var success = options.success;
      var collection = this;
      options.success = function(resp) {
        var method = options.reset ? 'reset' : 'set';
        collection[method](resp, options);
        if (success) success(collection, resp, options);
        collection.trigger('sync', collection, resp, options);
      };
      wrapError(this, options);
      return this.sync('read', this, options);
    },

    // Create a new instance of a model in this collection. Add the model to the
    // collection immediately, unless `wait: true` is passed, in which case we
    // wait for the server to agree.
    create: function(model, options) {
      options = options ? _.clone(options) : {};
      if (!(model = this._prepareModel(model, options))) return false;
      if (!options.wait) this.add(model, options);
      var collection = this;
      var success = options.success;
      options.success = function(model, resp) {
        if (options.wait) collection.add(model, options);
        if (success) success(model, resp, options);
      };
      model.save(null, options);
      return model;
    },

    // **parse** converts a response into a list of models to be added to the
    // collection. The default implementation is just to pass it through.
    parse: function(resp, options) {
      return resp;
    },

    // Create a new collection with an identical list of models as this one.
    clone: function() {
      return new this.constructor(this.models);
    },

    // Private method to reset all internal state. Called when the collection
    // is first initialized or reset.
    _reset: function() {
      this.length = 0;
      this.models = [];
      this._byId  = {};
    },

    // Prepare a hash of attributes (or other model) to be added to this
    // collection.
    _prepareModel: function(attrs, options) {
      if (attrs instanceof Model) return attrs;
      options = options ? _.clone(options) : {};
      options.collection = this;
      var model = new this.model(attrs, options);
      if (!model.validationError) return model;
      this.trigger('invalid', this, model.validationError, options);
      return false;
    },

    // Internal method to create a model's ties to a collection.
    _addReference: function(model, options) {
      this._byId[model.cid] = model;
      if (model.id != null) this._byId[model.id] = model;
      if (!model.collection) model.collection = this;
      model.on('all', this._onModelEvent, this);
    },

    // Internal method to sever a model's ties to a collection.
    _removeReference: function(model, options) {
      if (this === model.collection) delete model.collection;
      model.off('all', this._onModelEvent, this);
    },

    // Internal method called every time a model in the set fires an event.
    // Sets need to update their indexes when models change ids. All other
    // events simply proxy through. "add" and "remove" events that originate
    // in other collections are ignored.
    _onModelEvent: function(event, model, collection, options) {
      if ((event === 'add' || event === 'remove') && collection !== this) return;
      if (event === 'destroy') this.remove(model, options);
      if (model && event === 'change:' + model.idAttribute) {
        delete this._byId[model.previous(model.idAttribute)];
        if (model.id != null) this._byId[model.id] = model;
      }
      this.trigger.apply(this, arguments);
    }

  });

  // Underscore methods that we want to implement on the Collection.
  // 90% of the core usefulness of Backbone Collections is actually implemented
  // right here:
  var methods = ['forEach', 'each', 'map', 'collect', 'reduce', 'foldl',
    'inject', 'reduceRight', 'foldr', 'find', 'detect', 'filter', 'select',
    'reject', 'every', 'all', 'some', 'any', 'include', 'contains', 'invoke',
    'max', 'min', 'toArray', 'size', 'first', 'head', 'take', 'initial', 'rest',
    'tail', 'drop', 'last', 'without', 'difference', 'indexOf', 'shuffle',
    'lastIndexOf', 'isEmpty', 'chain', 'sample'];

  // Mix in each Underscore method as a proxy to `Collection#models`.
  _.each(methods, function(method) {
    Collection.prototype[method] = function() {
      var args = slice.call(arguments);
      args.unshift(this.models);
      return _[method].apply(_, args);
    };
  });

  // Underscore methods that take a property name as an argument.
  var attributeMethods = ['groupBy', 'countBy', 'sortBy', 'indexBy'];

  // Use attributes instead of properties.
  _.each(attributeMethods, function(method) {
    Collection.prototype[method] = function(value, context) {
      var iterator = _.isFunction(value) ? value : function(model) {
        return model.get(value);
      };
      return _[method](this.models, iterator, context);
    };
  });

  // Backbone.View
  // -------------

  // Backbone Views are almost more convention than they are actual code. A View
  // is simply a JavaScript object that represents a logical chunk of UI in the
  // DOM. This might be a single item, an entire list, a sidebar or panel, or
  // even the surrounding frame which wraps your whole app. Defining a chunk of
  // UI as a **View** allows you to define your DOM events declaratively, without
  // having to worry about render order ... and makes it easy for the view to
  // react to specific changes in the state of your models.

  // Creating a Backbone.View creates its initial element outside of the DOM,
  // if an existing element is not provided...
  var View = Backbone.View = function(options) {
    this.cid = _.uniqueId('view');
    options || (options = {});
    _.extend(this, _.pick(options, viewOptions));
    this._ensureElement();
    this.initialize.apply(this, arguments);
    this.delegateEvents();
  };

  // Cached regex to split keys for `delegate`.
  var delegateEventSplitter = /^(\S+)\s*(.*)$/;

  // List of view options to be merged as properties.
  var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events'];

  // Set up all inheritable **Backbone.View** properties and methods.
  _.extend(View.prototype, Events, {

    // The default `tagName` of a View's element is `"div"`.
    tagName: 'div',

    // jQuery delegate for element lookup, scoped to DOM elements within the
    // current view. This should be preferred to global lookups where possible.
    $: function(selector) {
      return this.$el.find(selector);
    },

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // **render** is the core function that your view should override, in order
    // to populate its element (`this.el`), with the appropriate HTML. The
    // convention is for **render** to always return `this`.
    render: function() {
      return this;
    },

    // Remove this view by taking the element out of the DOM, and removing any
    // applicable Backbone.Events listeners.
    remove: function() {
      this.$el.remove();
      this.stopListening();
      return this;
    },

    // Change the view's element (`this.el` property), including event
    // re-delegation.
    setElement: function(element, delegate) {
      if (this.$el) this.undelegateEvents();
      this.$el = element instanceof Backbone.$ ? element : Backbone.$(element);
      this.el = this.$el[0];
      if (delegate !== false) this.delegateEvents();
      return this;
    },

    // Set callbacks, where `this.events` is a hash of
    //
    // *{"event selector": "callback"}*
    //
    //     {
    //       'mousedown .title':  'edit',
    //       'click .button':     'save',
    //       'click .open':       function(e) { ... }
    //     }
    //
    // pairs. Callbacks will be bound to the view, with `this` set properly.
    // Uses event delegation for efficiency.
    // Omitting the selector binds the event to `this.el`.
    // This only works for delegate-able events: not `focus`, `blur`, and
    // not `change`, `submit`, and `reset` in Internet Explorer.
    delegateEvents: function(events) {
      if (!(events || (events = _.result(this, 'events')))) return this;
      this.undelegateEvents();
      for (var key in events) {
        var method = events[key];
        if (!_.isFunction(method)) method = this[events[key]];
        if (!method) continue;

        var match = key.match(delegateEventSplitter);
        var eventName = match[1], selector = match[2];
        method = _.bind(method, this);
        eventName += '.delegateEvents' + this.cid;
        if (selector === '') {
          this.$el.on(eventName, method);
        } else {
          this.$el.on(eventName, selector, method);
        }
      }
      return this;
    },

    // Clears all callbacks previously bound to the view with `delegateEvents`.
    // You usually don't need to use this, but may wish to if you have multiple
    // Backbone views attached to the same DOM element.
    undelegateEvents: function() {
      this.$el.off('.delegateEvents' + this.cid);
      return this;
    },

    // Ensure that the View has a DOM element to render into.
    // If `this.el` is a string, pass it through `$()`, take the first
    // matching element, and re-assign it to `el`. Otherwise, create
    // an element from the `id`, `className` and `tagName` properties.
    _ensureElement: function() {
      if (!this.el) {
        var attrs = _.extend({}, _.result(this, 'attributes'));
        if (this.id) attrs.id = _.result(this, 'id');
        if (this.className) attrs['class'] = _.result(this, 'className');
        var $el = Backbone.$('<' + _.result(this, 'tagName') + '>').attr(attrs);
        this.setElement($el, false);
      } else {
        this.setElement(_.result(this, 'el'), false);
      }
    }

  });

  // Backbone.sync
  // -------------

  // Override this function to change the manner in which Backbone persists
  // models to the server. You will be passed the type of request, and the
  // model in question. By default, makes a RESTful Ajax request
  // to the model's `url()`. Some possible customizations could be:
  //
  // * Use `setTimeout` to batch rapid-fire updates into a single request.
  // * Send up the models as XML instead of JSON.
  // * Persist models via WebSockets instead of Ajax.
  //
  // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
  // as `POST`, with a `_method` parameter containing the true HTTP method,
  // as well as all requests with the body as `application/x-www-form-urlencoded`
  // instead of `application/json` with the model in a param named `model`.
  // Useful when interfacing with server-side languages like **PHP** that make
  // it difficult to read the body of `PUT` requests.
  Backbone.sync = function(method, model, options) {
    var type = methodMap[method];

    // Default options, unless specified.
    _.defaults(options || (options = {}), {
      emulateHTTP: Backbone.emulateHTTP,
      emulateJSON: Backbone.emulateJSON
    });

    // Default JSON-request options.
    var params = {type: type, dataType: 'json'};

    // Ensure that we have a URL.
    if (!options.url) {
      params.url = _.result(model, 'url') || urlError();
    }

    // Ensure that we have the appropriate request data.
    if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) {
      params.contentType = 'application/json';
      params.data = JSON.stringify(options.attrs || model.toJSON(options));
    }

    // For older servers, emulate JSON by encoding the request into an HTML-form.
    if (options.emulateJSON) {
      params.contentType = 'application/x-www-form-urlencoded';
      params.data = params.data ? {model: params.data} : {};
    }

    // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
    // And an `X-HTTP-Method-Override` header.
    if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) {
      params.type = 'POST';
      if (options.emulateJSON) params.data._method = type;
      var beforeSend = options.beforeSend;
      options.beforeSend = function(xhr) {
        xhr.setRequestHeader('X-HTTP-Method-Override', type);
        if (beforeSend) return beforeSend.apply(this, arguments);
      };
    }

    // Don't process data on a non-GET request.
    if (params.type !== 'GET' && !options.emulateJSON) {
      params.processData = false;
    }

    // If we're sending a `PATCH` request, and we're in an old Internet Explorer
    // that still has ActiveX enabled by default, override jQuery to use that
    // for XHR instead. Remove this line when jQuery supports `PATCH` on IE8.
    if (params.type === 'PATCH' && noXhrPatch) {
      params.xhr = function() {
        return new ActiveXObject("Microsoft.XMLHTTP");
      };
    }

    // Make the request, allowing the user to override any Ajax options.
    var xhr = options.xhr = Backbone.ajax(_.extend(params, options));
    model.trigger('request', model, xhr, options);
    return xhr;
  };

  var noXhrPatch =
    typeof window !== 'undefined' && !!window.ActiveXObject &&
      !(window.XMLHttpRequest && (new XMLHttpRequest).dispatchEvent);

  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
  var methodMap = {
    'create': 'POST',
    'update': 'PUT',
    'patch':  'PATCH',
    'delete': 'DELETE',
    'read':   'GET'
  };

  // Set the default implementation of `Backbone.ajax` to proxy through to `$`.
  // Override this if you'd like to use a different library.
  Backbone.ajax = function() {
    return Backbone.$.ajax.apply(Backbone.$, arguments);
  };

  // Backbone.Router
  // ---------------

  // Routers map faux-URLs to actions, and fire events when routes are
  // matched. Creating a new one sets its `routes` hash, if not set statically.
  var Router = Backbone.Router = function(options) {
    options || (options = {});
    if (options.routes) this.routes = options.routes;
    this._bindRoutes();
    this.initialize.apply(this, arguments);
  };

  // Cached regular expressions for matching named param parts and splatted
  // parts of route strings.
  var optionalParam = /\((.*?)\)/g;
  var namedParam    = /(\(\?)?:\w+/g;
  var splatParam    = /\*\w+/g;
  var escapeRegExp  = /[\-{}\[\]+?.,\\\^$|#\s]/g;

  // Set up all inheritable **Backbone.Router** properties and methods.
  _.extend(Router.prototype, Events, {

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // Manually bind a single named route to a callback. For example:
    //
    //     this.route('search/:query/p:num', 'search', function(query, num) {
    //       ...
    //     });
    //
    route: function(route, name, callback) {
      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
      if (_.isFunction(name)) {
        callback = name;
        name = '';
      }
      if (!callback) callback = this[name];
      var router = this;
      Backbone.history.route(route, function(fragment) {
        var args = router._extractParameters(route, fragment);
        router.execute(callback, args);
        router.trigger.apply(router, ['route:' + name].concat(args));
        router.trigger('route', name, args);
        Backbone.history.trigger('route', router, name, args);
      });
      return this;
    },

    // Execute a route handler with the provided parameters.  This is an
    // excellent place to do pre-route setup or post-route cleanup.
    execute: function(callback, args) {
      if (callback) callback.apply(this, args);
    },

    // Simple proxy to `Backbone.history` to save a fragment into the history.
    navigate: function(fragment, options) {
      Backbone.history.navigate(fragment, options);
      return this;
    },

    // Bind all defined routes to `Backbone.history`. We have to reverse the
    // order of the routes here to support behavior where the most general
    // routes can be defined at the bottom of the route map.
    _bindRoutes: function() {
      if (!this.routes) return;
      this.routes = _.result(this, 'routes');
      var route, routes = _.keys(this.routes);
      while ((route = routes.pop()) != null) {
        this.route(route, this.routes[route]);
      }
    },

    // Convert a route string into a regular expression, suitable for matching
    // against the current location hash.
    _routeToRegExp: function(route) {
      route = route.replace(escapeRegExp, '\\$&')
                   .replace(optionalParam, '(?:$1)?')
                   .replace(namedParam, function(match, optional) {
                     return optional ? match : '([^/?]+)';
                   })
                   .replace(splatParam, '([^?]*?)');
      return new RegExp('^' + route + '(?:\\?([\\s\\S]*))?$');
    },

    // Given a route, and a URL fragment that it matches, return the array of
    // extracted decoded parameters. Empty or unmatched parameters will be
    // treated as `null` to normalize cross-browser behavior.
    _extractParameters: function(route, fragment) {
      var params = route.exec(fragment).slice(1);
      return _.map(params, function(param, i) {
        // Don't decode the search params.
        if (i === params.length - 1) return param || null;
        return param ? decodeURIComponent(param) : null;
      });
    }

  });

  // Backbone.History
  // ----------------

  // Handles cross-browser history management, based on either
  // [pushState](http://diveintohtml5.info/history.html) and real URLs, or
  // [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange)
  // and URL fragments. If the browser supports neither (old IE, natch),
  // falls back to polling.
  var History = Backbone.History = function() {
    this.handlers = [];
    _.bindAll(this, 'checkUrl');

    // Ensure that `History` can be used outside of the browser.
    if (typeof window !== 'undefined') {
      this.location = window.location;
      this.history = window.history;
    }
  };

  // Cached regex for stripping a leading hash/slash and trailing space.
  var routeStripper = /^[#\/]|\s+$/g;

  // Cached regex for stripping leading and trailing slashes.
  var rootStripper = /^\/+|\/+$/g;

  // Cached regex for detecting MSIE.
  var isExplorer = /msie [\w.]+/;

  // Cached regex for removing a trailing slash.
  var trailingSlash = /\/$/;

  // Cached regex for stripping urls of hash.
  var pathStripper = /#.*$/;

  // Has the history handling already been started?
  History.started = false;

  // Set up all inheritable **Backbone.History** properties and methods.
  _.extend(History.prototype, Events, {

    // The default interval to poll for hash changes, if necessary, is
    // twenty times a second.
    interval: 50,

    // Are we at the app root?
    atRoot: function() {
      return this.location.pathname.replace(/[^\/]$/, '$&/') === this.root;
    },

    // Gets the true hash value. Cannot use location.hash directly due to bug
    // in Firefox where location.hash will always be decoded.
    getHash: function(window) {
      var match = (window || this).location.href.match(/#(.*)$/);
      return match ? match[1] : '';
    },

    // Get the cross-browser normalized URL fragment, either from the URL,
    // the hash, or the override.
    getFragment: function(fragment, forcePushState) {
      if (fragment == null) {
        if (this._hasPushState || !this._wantsHashChange || forcePushState) {
          fragment = decodeURI(this.location.pathname + this.location.search);
          var root = this.root.replace(trailingSlash, '');
          if (!fragment.indexOf(root)) fragment = fragment.slice(root.length);
        } else {
          fragment = this.getHash();
        }
      }
      return fragment.replace(routeStripper, '');
    },

    // Start the hash change handling, returning `true` if the current URL matches
    // an existing route, and `false` otherwise.
    start: function(options) {
      if (History.started) throw new Error("Backbone.history has already been started");
      History.started = true;

      // Figure out the initial configuration. Do we need an iframe?
      // Is pushState desired ... is it available?
      this.options          = _.extend({root: '/'}, this.options, options);
      this.root             = this.options.root;
      this._wantsHashChange = this.options.hashChange !== false;
      this._wantsPushState  = !!this.options.pushState;
      this._hasPushState    = !!(this.options.pushState && this.history && this.history.pushState);
      var fragment          = this.getFragment();
      var docMode           = document.documentMode;
      var oldIE             = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7));

      // Normalize root to always include a leading and trailing slash.
      this.root = ('/' + this.root + '/').replace(rootStripper, '/');

      if (oldIE && this._wantsHashChange) {
        var frame = Backbone.$('<iframe src="javascript:0" tabindex="-1">');
        this.iframe = frame.hide().appendTo('body')[0].contentWindow;
        this.navigate(fragment);
      }

      // Depending on whether we're using pushState or hashes, and whether
      // 'onhashchange' is supported, determine how we check the URL state.
      if (this._hasPushState) {
        Backbone.$(window).on('popstate', this.checkUrl);
      } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
        Backbone.$(window).on('hashchange', this.checkUrl);
      } else if (this._wantsHashChange) {
        this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
      }

      // Determine if we need to change the base url, for a pushState link
      // opened by a non-pushState browser.
      this.fragment = fragment;
      var loc = this.location;

      // Transition from hashChange to pushState or vice versa if both are
      // requested.
      if (this._wantsHashChange && this._wantsPushState) {

        // If we've started off with a route from a `pushState`-enabled
        // browser, but we're currently in a browser that doesn't support it...
        if (!this._hasPushState && !this.atRoot()) {
          this.fragment = this.getFragment(null, true);
          this.location.replace(this.root + '#' + this.fragment);
          // Return immediately as browser will do redirect to new url
          return true;

        // Or if we've started out with a hash-based route, but we're currently
        // in a browser where it could be `pushState`-based instead...
        } else if (this._hasPushState && this.atRoot() && loc.hash) {
          this.fragment = this.getHash().replace(routeStripper, '');
          this.history.replaceState({}, document.title, this.root + this.fragment);
        }

      }

      if (!this.options.silent) return this.loadUrl();
    },

    // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
    // but possibly useful for unit testing Routers.
    stop: function() {
      Backbone.$(window).off('popstate', this.checkUrl).off('hashchange', this.checkUrl);
      if (this._checkUrlInterval) clearInterval(this._checkUrlInterval);
      History.started = false;
    },

    // Add a route to be tested when the fragment changes. Routes added later
    // may override previous routes.
    route: function(route, callback) {
      this.handlers.unshift({route: route, callback: callback});
    },

    // Checks the current URL to see if it has changed, and if it has,
    // calls `loadUrl`, normalizing across the hidden iframe.
    checkUrl: function(e) {
      var current = this.getFragment();
      if (current === this.fragment && this.iframe) {
        current = this.getFragment(this.getHash(this.iframe));
      }
      if (current === this.fragment) return false;
      if (this.iframe) this.navigate(current);
      this.loadUrl();
    },

    // Attempt to load the current URL fragment. If a route succeeds with a
    // match, returns `true`. If no defined routes matches the fragment,
    // returns `false`.
    loadUrl: function(fragment) {
      fragment = this.fragment = this.getFragment(fragment);
      return _.any(this.handlers, function(handler) {
        if (handler.route.test(fragment)) {
          handler.callback(fragment);
          return true;
        }
      });
    },

    // Save a fragment into the hash history, or replace the URL state if the
    // 'replace' option is passed. You are responsible for properly URL-encoding
    // the fragment in advance.
    //
    // The options object can contain `trigger: true` if you wish to have the
    // route callback be fired (not usually desirable), or `replace: true`, if
    // you wish to modify the current URL without adding an entry to the history.
    navigate: function(fragment, options) {
      if (!History.started) return false;
      if (!options || options === true) options = {trigger: !!options};

      var url = this.root + (fragment = this.getFragment(fragment || ''));

      // Strip the hash for matching.
      fragment = fragment.replace(pathStripper, '');

      if (this.fragment === fragment) return;
      this.fragment = fragment;

      // Don't include a trailing slash on the root.
      if (fragment === '' && url !== '/') url = url.slice(0, -1);

      // If pushState is available, we use it to set the fragment as a real URL.
      if (this._hasPushState) {
        this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url);

      // If hash changes haven't been explicitly disabled, update the hash
      // fragment to store history.
      } else if (this._wantsHashChange) {
        this._updateHash(this.location, fragment, options.replace);
        if (this.iframe && (fragment !== this.getFragment(this.getHash(this.iframe)))) {
          // Opening and closing the iframe tricks IE7 and earlier to push a
          // history entry on hash-tag change.  When replace is true, we don't
          // want this.
          if(!options.replace) this.iframe.document.open().close();
          this._updateHash(this.iframe.location, fragment, options.replace);
        }

      // If you've told us that you explicitly don't want fallback hashchange-
      // based history, then `navigate` becomes a page refresh.
      } else {
        return this.location.assign(url);
      }
      if (options.trigger) return this.loadUrl(fragment);
    },

    // Update the hash location, either replacing the current entry, or adding
    // a new one to the browser history.
    _updateHash: function(location, fragment, replace) {
      if (replace) {
        var href = location.href.replace(/(javascript:|#).*$/, '');
        location.replace(href + '#' + fragment);
      } else {
        // Some browsers require that `hash` contains a leading #.
        location.hash = '#' + fragment;
      }
    }

  });

  // Create the default Backbone.history.
  Backbone.history = new History;

  // Helpers
  // -------

  // Helper function to correctly set up the prototype chain, for subclasses.
  // Similar to `goog.inherits`, but uses a hash of prototype properties and
  // class properties to be extended.
  var extend = function(protoProps, staticProps) {
    var parent = this;
    var child;

    // The constructor function for the new subclass is either defined by you
    // (the "constructor" property in your `extend` definition), or defaulted
    // by us to simply call the parent's constructor.
    if (protoProps && _.has(protoProps, 'constructor')) {
      child = protoProps.constructor;
    } else {
      child = function(){ return parent.apply(this, arguments); };
    }

    // Add static properties to the constructor function, if supplied.
    _.extend(child, parent, staticProps);

    // Set the prototype chain to inherit from `parent`, without calling
    // `parent`'s constructor function.
    var Surrogate = function(){ this.constructor = child; };
    Surrogate.prototype = parent.prototype;
    child.prototype = new Surrogate;

    // Add prototype properties (instance properties) to the subclass,
    // if supplied.
    if (protoProps) _.extend(child.prototype, protoProps);

    // Set a convenience property in case the parent's prototype is needed
    // later.
    child.__super__ = parent.prototype;

    return child;
  };

  // Set up inheritance for the model, collection, router, view and history.
  Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend;

  // Throw an error when a URL is needed, and none is supplied.
  var urlError = function() {
    throw new Error('A "url" property or function must be specified');
  };

  // Wrap an optional error callback with a fallback error event.
  var wrapError = function(model, options) {
    var error = options.error;
    options.error = function(resp) {
      if (error) error(model, resp, options);
      model.trigger('error', model, resp, options);
    };
  };

  return Backbone;

}));

/**
 * Backbone localStorage and sessionStorage Adapter
 * Version 0.0.1
 *
 * https://github.com/jcbrand/Backbone.browserStorage
 */
(function (root, factory) {
  if (typeof exports === 'object' && typeof require === 'function') {
    module.exports = factory(require("backbone"), require('underscore'));
  } else if (typeof define === "function" && define.amd) {
    // AMD. Register as an anonymous module.
    define('backbone.browserStorage',["backbone", "underscore"], function(Backbone, _) {
      // Use global variables if the locals are undefined.
      return factory(Backbone || root.Backbone, _ || root._);
    });
  } else {
    factory(Backbone, _);
  }
}(this, function(Backbone, _) {
// A simple module to replace `Backbone.sync` with *browser storage*-based
// persistence. Models are given GUIDS, and saved into a JSON object. Simple
// as that.

// Hold reference to Underscore.js and Backbone.js in the closure in order
// to make things work even if they are removed from the global namespace

// Generate four random hex digits.
function S4() {
   return (((1+Math.random())*0x10000)|0).toString(16).substring(1);
}

// Generate a pseudo-GUID by concatenating random hexadecimal.
function guid() {
   return (S4()+S4()+"-"+S4()+"-"+S4()+"-"+S4()+"-"+S4()+S4()+S4());
}

function contains(array, item) {
  var i = array.length;
  while (i--) if (array[i] === item) return true;
  return false;
}

function extend(obj, props) {
  for (var key in props) { obj[key] = props[key]; }
  return obj;
}

function _browserStorage (name, serializer, type) {
    var _store;
    if (type === 'local' && !window.localStorage ) {
        throw "Backbone.browserStorage: Environment does not support localStorage.";
    } else if (type === 'session' && !window.sessionStorage ) {
        throw "Backbone.browserStorage: Environment does not support sessionStorage.";
    }
    this.name = name;
    this.serializer = serializer || {
        serialize: function(item) {
        return _.isObject(item) ? JSON.stringify(item) : item;
        },
        // fix for "illegal access" error on Android when JSON.parse is passed null
        deserialize: function (data) {
        return data && JSON.parse(data);
        }
    };

    if (type === 'session') {
        this.store = window.sessionStorage;
    } else if (type === 'local') {
        this.store = window.localStorage;
    } else {
        throw "Backbone.browserStorage: No storage type was specified";
    }
    _store = this.store.getItem(this.name);
    this.records = (_store && _store.split(",")) || [];
}

// Our Store is represented by a single JS object in *localStorage* or *sessionStorage*.
// Create it with a meaningful name, like the name you'd give a table.
Backbone.BrowserStorage = {
    local: function (name, serializer) {
        return _browserStorage.bind(this, name, serializer, 'local')();
    },
    session: function (name, serializer) {
        return _browserStorage.bind(this, name, serializer, 'session')();
    }
};

// The browser's local and session stores will be extended with this obj.
var _extension = {

  // Save the current state of the **Store**
  save: function() {
    this.store.setItem(this.name, this.records.join(","));
  },

  // Add a model, giving it a (hopefully)-unique GUID, if it doesn't already
  // have an id of it's own.
  create: function(model) {
    if (!model.id) {
      model.id = guid();
      model.set(model.idAttribute, model.id);
    }
    this.store.setItem(this._itemName(model.id), this.serializer.serialize(model));
    this.records.push(model.id.toString());
    this.save();
    return this.find(model) !== false;
  },

  // Update a model by replacing its copy in `this.data`.
  update: function(model) {
    this.store.setItem(this._itemName(model.id), this.serializer.serialize(model));
    var modelId = model.id.toString();
    if (!contains(this.records, modelId)) {
      this.records.push(modelId);
      this.save();
    }
    return this.find(model) !== false;
  },

  // Retrieve a model from `this.data` by id.
  find: function(model) {
    return this.serializer.deserialize(this.store.getItem(this._itemName(model.id)));
  },

  // Return the array of all models currently in storage.
  findAll: function() {
    var result = [];
    for (var i = 0, id, data; i < this.records.length; i++) {
      id = this.records[i];
      data = this.serializer.deserialize(this.store.getItem(this._itemName(id)));
      if (data !== null) result.push(data);
    }
    return result;
  },

  // Delete a model from `this.data`, returning it.
  destroy: function(model) {
    this.store.removeItem(this._itemName(model.id));
    var modelId = model.id.toString();
    for (var i = 0, id; i < this.records.length; i++) {
      if (this.records[i] === modelId) {
        this.records.splice(i, 1);
      }
    }
    this.save();
    return model;
  },

  browserStorage: function() {
    return {
        session: sessionStorage,
        local: localStorage
    };
  },

  // Clear browserStorage for specific collection.
  _clear: function() {
    var local = this.store,
      itemRe = new RegExp("^" + this.name + "-");

    // Remove id-tracking item (e.g., "foo").
    local.removeItem(this.name);

    // Match all data items (e.g., "foo-ID") and remove.
    for (var k in local) {
      if (itemRe.test(k)) {
        local.removeItem(k);
      }
    }

    this.records.length = 0;
  },

  // Size of browserStorage.
  _storageSize: function() {
    return this.store.length;
  },

  _itemName: function(id) {
    return this.name+"-"+id;
  }

};

extend(Backbone.BrowserStorage.session.prototype, _extension);
extend(Backbone.BrowserStorage.local.prototype, _extension);

// localSync delegate to the model or collection's
// *browserStorage* property, which should be an instance of `Store`.
// window.Store.sync and Backbone.localSync is deprecated, use Backbone.BrowserStorage.sync instead
Backbone.BrowserStorage.sync = Backbone.localSync = function(method, model, options) {
  var store = model.browserStorage || model.collection.browserStorage;

  var resp, errorMessage;
  //If $ is having Deferred - use it.
  var syncDfd = Backbone.$ ?
    (Backbone.$.Deferred && Backbone.$.Deferred()) :
    (Backbone.Deferred && Backbone.Deferred());

  try {

    switch (method) {
      case "read":
        resp = model.id !== undefined ? store.find(model) : store.findAll();
        break;
      case "create":
        resp = store.create(model);
        break;
      case "update":
        resp = store.update(model);
        break;
      case "delete":
        resp = store.destroy(model);
        break;
    }

  } catch(error) {
    if (error.code === 22 && store._storageSize() === 0)
      errorMessage = "Private browsing is unsupported";
    else
      errorMessage = error.message;
  }

  if (resp) {
    if (options && options.success) {
      if (Backbone.VERSION === "0.9.10") {
        options.success(model, resp, options);
      } else {
        options.success(resp);
      }
    }
    if (syncDfd) {
      syncDfd.resolve(resp);
    }

  } else {
    errorMessage = errorMessage ? errorMessage
                                : "Record Not Found";

    if (options && options.error)
      if (Backbone.VERSION === "0.9.10") {
        options.error(model, errorMessage, options);
      } else {
        options.error(errorMessage);
      }

    if (syncDfd)
      syncDfd.reject(errorMessage);
  }

  // add compatibility with $.ajax
  // always execute callback for success and error
  if (options && options.complete) options.complete(resp);

  return syncDfd && syncDfd.promise();
};

Backbone.ajaxSync = Backbone.sync;

Backbone.getSyncMethod = function(model) {
  if(model.browserStorage || (model.collection && model.collection.browserStorage)) {
    return Backbone.localSync;
  }
  return Backbone.ajaxSync;
};

// Override 'Backbone.sync' to default to localSync,
// the original 'Backbone.sync' is still available in 'Backbone.ajaxSync'
Backbone.sync = function(method, model, options) {
  return Backbone.getSyncMethod(model).apply(this, [method, model, options]);
};

return Backbone.BrowserStorage;
}));

/*!
 * Backbone.Overview 
 *
 * Copyright (c) 2014, JC Brand <jc@opkode.com>
 * Licensed under the Mozilla Public License (MPL) 
 */

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        define('backbone.overview',["underscore", "backbone"],
            function(_, Backbone) {
                return factory(_ || root._, Backbone || root.Backbone);
            }
        );
   } else {
      // RequireJS isn't being used.
      // Assume underscore and backbone are loaded in <script> tags
      factory(_, Backbone);
   }
}(this, function (_, Backbone) {
    
    var Overview = Backbone.Overview = function (options) {
        /* An Overview is a View that contains and keeps track of sub-views.
         * Kind of like what a Collection is to a Model.
         */
        var views = {};
        this.keys = function () { return _.keys(views) };
        this.getAll = function () { return views; };
        this.get = function (id) { return views[id]; };
        this.add = function (id, view) {
            views[id] = view;
            return view;
        };
        this.remove = function (id) {
            var view = views[id];
            if (view) {
                delete views[id];
                view.remove();
                return view;
            }
        };
        this.removeAll = function (id) {
            _.each(_.keys(views), this.remove);
        };

        Backbone.View.apply(this, Array.prototype.slice.apply(arguments));
    };
    _.extend(Overview.prototype, Backbone.View.prototype);
    Overview.extend = Backbone.View.extend;
    return Backbone.Overview;
}));

/*!
 * typeahead.js 0.10.5
 * https://github.com/twitter/typeahead.js
 * Copyright 2013-2014 Twitter, Inc. and other contributors; Licensed MIT
 */

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define('typeahead',['jquery'], function ($) {
            factory($, root);
        });
    } else {
        // Browser globals
        factory(jQuery, root);
    }
}(this, function($, window) {
    var _ = function() {
        
        return {
            isMsie: function() {
                return /(msie|trident)/i.test(navigator.userAgent) ? navigator.userAgent.match(/(msie |rv:)(\d+(.\d+)?)/i)[2] : false;
            },
            isBlankString: function(str) {
                return !str || /^\s*$/.test(str);
            },
            escapeRegExChars: function(str) {
                return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
            },
            isString: function(obj) {
                return typeof obj === "string";
            },
            isNumber: function(obj) {
                return typeof obj === "number";
            },
            isArray: $.isArray,
            isFunction: $.isFunction,
            isObject: $.isPlainObject,
            isUndefined: function(obj) {
                return typeof obj === "undefined";
            },
            toStr: function toStr(s) {
                return _.isUndefined(s) || s === null ? "" : s + "";
            },
            bind: $.proxy,
            each: function(collection, cb) {
                $.each(collection, reverseArgs);
                function reverseArgs(index, value) {
                    return cb(value, index);
                }
            },
            map: $.map,
            filter: $.grep,
            every: function(obj, test) {
                var result = true;
                if (!obj) {
                    return result;
                }
                $.each(obj, function(key, val) {
                    if (!(result = test.call(null, val, key, obj))) {
                        return false;
                    }
                });
                return !!result;
            },
            some: function(obj, test) {
                var result = false;
                if (!obj) {
                    return result;
                }
                $.each(obj, function(key, val) {
                    if (result = test.call(null, val, key, obj)) {
                        return false;
                    }
                });
                return !!result;
            },
            mixin: $.extend,
            getUniqueId: function() {
                var counter = 0;
                return function() {
                    return counter++;
                };
            }(),
            templatify: function templatify(obj) {
                return $.isFunction(obj) ? obj : template;
                function template() {
                    return String(obj);
                }
            },
            defer: function(fn) {
                setTimeout(fn, 0);
            },
            debounce: function(func, wait, immediate) {
                var timeout, result;
                return function() {
                    var context = this, args = arguments, later, callNow;
                    later = function() {
                        timeout = null;
                        if (!immediate) {
                            result = func.apply(context, args);
                        }
                    };
                    callNow = immediate && !timeout;
                    clearTimeout(timeout);
                    timeout = setTimeout(later, wait);
                    if (callNow) {
                        result = func.apply(context, args);
                    }
                    return result;
                };
            },
            throttle: function(func, wait) {
                var context, args, timeout, result, previous, later;
                previous = 0;
                later = function() {
                    previous = new Date();
                    timeout = null;
                    result = func.apply(context, args);
                };
                return function() {
                    var now = new Date(), remaining = wait - (now - previous);
                    context = this;
                    args = arguments;
                    if (remaining <= 0) {
                        clearTimeout(timeout);
                        timeout = null;
                        previous = now;
                        result = func.apply(context, args);
                    } else if (!timeout) {
                        timeout = setTimeout(later, remaining);
                    }
                    return result;
                };
            },
            noop: function() {}
        };
    }();
    var html = function() {
        return {
            wrapper: '<span class="twitter-typeahead"></span>',
            dropdown: '<span class="tt-dropdown-menu"></span>',
            dataset: '<div class="tt-dataset-%CLASS%"></div>',
            suggestions: '<span class="tt-suggestions"></span>',
            suggestion: '<div class="tt-suggestion"></div>'
        };
    }();
    var css = function() {
        
        var css = {
            wrapper: {
                position: "relative",
                display: "inline-block"
            },
            hint: {
                position: "absolute",
                top: "0",
                left: "0",
                borderColor: "transparent",
                boxShadow: "none",
                opacity: "1"
            },
            input: {
                position: "relative",
                verticalAlign: "top",
                backgroundColor: "transparent"
            },
            inputWithNoHint: {
                position: "relative",
                verticalAlign: "top"
            },
            dropdown: {
                position: "absolute",
                top: "100%",
                left: "0",
                zIndex: "100",
                display: "none"
            },
            suggestions: {
                display: "block"
            },
            suggestion: {
                whiteSpace: "nowrap",
                cursor: "pointer"
            },
            suggestionChild: {
                whiteSpace: "normal"
            },
            ltr: {
                left: "0",
                right: "auto"
            },
            rtl: {
                left: "auto",
                right: " 0"
            }
        };
        if (_.isMsie()) {
            _.mixin(css.input, {
                backgroundImage: "url(data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)"
            });
        }
        if (_.isMsie() && _.isMsie() <= 7) {
            _.mixin(css.input, {
                marginTop: "-1px"
            });
        }
        return css;
    }();
    var EventBus = function() {
        
        var namespace = "typeahead:";
        function EventBus(o) {
            if (!o || !o.el) {
                $.error("EventBus initialized without el");
            }
            this.$el = $(o.el);
        }
        _.mixin(EventBus.prototype, {
            trigger: function(type) {
                var args = [].slice.call(arguments, 1);
                this.$el.trigger(namespace + type, args);
            }
        });
        return EventBus;
    }();
    var EventEmitter = function() {
        
        var splitter = /\s+/, nextTick = getNextTick();
        return {
            onSync: onSync,
            onAsync: onAsync,
            off: off,
            trigger: trigger
        };
        function on(method, types, cb, context) {
            var type;
            if (!cb) {
                return this;
            }
            types = types.split(splitter);
            cb = context ? bindContext(cb, context) : cb;
            this._callbacks = this._callbacks || {};
            while (type = types.shift()) {
                this._callbacks[type] = this._callbacks[type] || {
                    sync: [],
                    async: []
                };
                this._callbacks[type][method].push(cb);
            }
            return this;
        }
        function onAsync(types, cb, context) {
            return on.call(this, "async", types, cb, context);
        }
        function onSync(types, cb, context) {
            return on.call(this, "sync", types, cb, context);
        }
        function off(types) {
            var type;
            if (!this._callbacks) {
                return this;
            }
            types = types.split(splitter);
            while (type = types.shift()) {
                delete this._callbacks[type];
            }
            return this;
        }
        function trigger(types) {
            var type, callbacks, args, syncFlush, asyncFlush;
            if (!this._callbacks) {
                return this;
            }
            types = types.split(splitter);
            args = [].slice.call(arguments, 1);
            while ((type = types.shift()) && (callbacks = this._callbacks[type])) {
                syncFlush = getFlush(callbacks.sync, this, [ type ].concat(args));
                asyncFlush = getFlush(callbacks.async, this, [ type ].concat(args));
                syncFlush() && nextTick(asyncFlush);
            }
            return this;
        }
        function getFlush(callbacks, context, args) {
            return flush;
            function flush() {
                var cancelled;
                for (var i = 0, len = callbacks.length; !cancelled && i < len; i += 1) {
                    cancelled = callbacks[i].apply(context, args) === false;
                }
                return !cancelled;
            }
        }
        function getNextTick() {
            var nextTickFn;
            if (window.setImmediate) {
                nextTickFn = function nextTickSetImmediate(fn) {
                    setImmediate(function() {
                        fn();
                    });
                };
            } else {
                nextTickFn = function nextTickSetTimeout(fn) {
                    setTimeout(function() {
                        fn();
                    }, 0);
                };
            }
            return nextTickFn;
        }
        function bindContext(fn, context) {
            return fn.bind ? fn.bind(context) : function() {
                fn.apply(context, [].slice.call(arguments, 0));
            };
        }
    }();
    var highlight = function(doc) {
        
        var defaults = {
            node: null,
            pattern: null,
            tagName: "strong",
            className: null,
            wordsOnly: false,
            caseSensitive: false
        };
        return function hightlight(o) {
            var regex;
            o = _.mixin({}, defaults, o);
            if (!o.node || !o.pattern) {
                return;
            }
            o.pattern = _.isArray(o.pattern) ? o.pattern : [ o.pattern ];
            regex = getRegex(o.pattern, o.caseSensitive, o.wordsOnly);
            traverse(o.node, hightlightTextNode);
            function hightlightTextNode(textNode) {
                var match, patternNode, wrapperNode;
                if (match = regex.exec(textNode.data)) {
                    wrapperNode = doc.createElement(o.tagName);
                    o.className && (wrapperNode.className = o.className);
                    patternNode = textNode.splitText(match.index);
                    patternNode.splitText(match[0].length);
                    wrapperNode.appendChild(patternNode.cloneNode(true));
                    textNode.parentNode.replaceChild(wrapperNode, patternNode);
                }
                return !!match;
            }
            function traverse(el, hightlightTextNode) {
                var childNode, TEXT_NODE_TYPE = 3;
                for (var i = 0; i < el.childNodes.length; i++) {
                    childNode = el.childNodes[i];
                    if (childNode.nodeType === TEXT_NODE_TYPE) {
                        i += hightlightTextNode(childNode) ? 1 : 0;
                    } else {
                        traverse(childNode, hightlightTextNode);
                    }
                }
            }
        };
        function getRegex(patterns, caseSensitive, wordsOnly) {
            var escapedPatterns = [], regexStr;
            for (var i = 0, len = patterns.length; i < len; i++) {
                escapedPatterns.push(_.escapeRegExChars(patterns[i]));
            }
            regexStr = wordsOnly ? "\\b(" + escapedPatterns.join("|") + ")\\b" : "(" + escapedPatterns.join("|") + ")";
            return caseSensitive ? new RegExp(regexStr) : new RegExp(regexStr, "i");
        }
    }(window.document);
    var Input = function() {
        
        var specialKeyCodeMap;
        specialKeyCodeMap = {
            9: "tab",
            27: "esc",
            37: "left",
            39: "right",
            13: "enter",
            38: "up",
            40: "down"
        };
        function Input(o) {
            var that = this, onBlur, onFocus, onKeydown, onInput;
            o = o || {};
            if (!o.input) {
                $.error("input is missing");
            }
            onBlur = _.bind(this._onBlur, this);
            onFocus = _.bind(this._onFocus, this);
            onKeydown = _.bind(this._onKeydown, this);
            onInput = _.bind(this._onInput, this);
            this.$hint = $(o.hint);
            this.$input = $(o.input).on("blur.tt", onBlur).on("focus.tt", onFocus).on("keydown.tt", onKeydown);
            if (this.$hint.length === 0) {
                this.setHint = this.getHint = this.clearHint = this.clearHintIfInvalid = _.noop;
            }
            if (!_.isMsie()) {
                this.$input.on("input.tt", onInput);
            } else {
                this.$input.on("keydown.tt keypress.tt cut.tt paste.tt", function($e) {
                    if (specialKeyCodeMap[$e.which || $e.keyCode]) {
                        return;
                    }
                    _.defer(_.bind(that._onInput, that, $e));
                });
            }
            this.query = this.$input.val();
            this.$overflowHelper = buildOverflowHelper(this.$input);
        }
        Input.normalizeQuery = function(str) {
            return (str || "").replace(/^\s*/g, "").replace(/\s{2,}/g, " ");
        };
        _.mixin(Input.prototype, EventEmitter, {
            _onBlur: function onBlur() {
                this.resetInputValue();
                this.trigger("blurred");
            },
            _onFocus: function onFocus() {
                this.trigger("focused");
            },
            _onKeydown: function onKeydown($e) {
                var keyName = specialKeyCodeMap[$e.which || $e.keyCode];
                this._managePreventDefault(keyName, $e);
                if (keyName && this._shouldTrigger(keyName, $e)) {
                    this.trigger(keyName + "Keyed", $e);
                }
            },
            _onInput: function onInput() {
                this._checkInputValue();
            },
            _managePreventDefault: function managePreventDefault(keyName, $e) {
                var preventDefault, hintValue, inputValue;
                switch (keyName) {
                  case "tab":
                    hintValue = this.getHint();
                    inputValue = this.getInputValue();
                    preventDefault = hintValue && hintValue !== inputValue && !withModifier($e);
                    break;

                  case "up":
                  case "down":
                    preventDefault = !withModifier($e);
                    break;

                  default:
                    preventDefault = false;
                }
                preventDefault && $e.preventDefault();
            },
            _shouldTrigger: function shouldTrigger(keyName, $e) {
                var trigger;
                switch (keyName) {
                  case "tab":
                    trigger = !withModifier($e);
                    break;

                  default:
                    trigger = true;
                }
                return trigger;
            },
            _checkInputValue: function checkInputValue() {
                var inputValue, areEquivalent, hasDifferentWhitespace;
                inputValue = this.getInputValue();
                areEquivalent = areQueriesEquivalent(inputValue, this.query);
                hasDifferentWhitespace = areEquivalent ? this.query.length !== inputValue.length : false;
                this.query = inputValue;
                if (!areEquivalent) {
                    this.trigger("queryChanged", this.query);
                } else if (hasDifferentWhitespace) {
                    this.trigger("whitespaceChanged", this.query);
                }
            },
            focus: function focus() {
                this.$input.focus();
            },
            blur: function blur() {
                this.$input.blur();
            },
            getQuery: function getQuery() {
                return this.query;
            },
            setQuery: function setQuery(query) {
                this.query = query;
            },
            getInputValue: function getInputValue() {
                return this.$input.val();
            },
            setInputValue: function setInputValue(value, silent) {
                this.$input.val(value);
                silent ? this.clearHint() : this._checkInputValue();
            },
            resetInputValue: function resetInputValue() {
                this.setInputValue(this.query, true);
            },
            getHint: function getHint() {
                return this.$hint.val();
            },
            setHint: function setHint(value) {
                this.$hint.val(value);
            },
            clearHint: function clearHint() {
                this.setHint("");
            },
            clearHintIfInvalid: function clearHintIfInvalid() {
                var val, hint, valIsPrefixOfHint, isValid;
                val = this.getInputValue();
                hint = this.getHint();
                valIsPrefixOfHint = val !== hint && hint.indexOf(val) === 0;
                isValid = val !== "" && valIsPrefixOfHint && !this.hasOverflow();
                !isValid && this.clearHint();
            },
            getLanguageDirection: function getLanguageDirection() {
                return (this.$input.css("direction") || "ltr").toLowerCase();
            },
            hasOverflow: function hasOverflow() {
                var constraint = this.$input.width() - 2;
                this.$overflowHelper.text(this.getInputValue());
                return this.$overflowHelper.width() >= constraint;
            },
            isCursorAtEnd: function() {
                var valueLength, selectionStart, range;
                valueLength = this.$input.val().length;
                selectionStart = this.$input[0].selectionStart;
                if (_.isNumber(selectionStart)) {
                    return selectionStart === valueLength;
                } else if (document.selection) {
                    range = document.selection.createRange();
                    range.moveStart("character", -valueLength);
                    return valueLength === range.text.length;
                }
                return true;
            },
            destroy: function destroy() {
                this.$hint.off(".tt");
                this.$input.off(".tt");
                this.$hint = this.$input = this.$overflowHelper = null;
            }
        });
        return Input;
        function buildOverflowHelper($input) {
            return $('<pre aria-hidden="true"></pre>').css({
                position: "absolute",
                visibility: "hidden",
                whiteSpace: "pre",
                fontFamily: $input.css("font-family"),
                fontSize: $input.css("font-size"),
                fontStyle: $input.css("font-style"),
                fontVariant: $input.css("font-variant"),
                fontWeight: $input.css("font-weight"),
                wordSpacing: $input.css("word-spacing"),
                letterSpacing: $input.css("letter-spacing"),
                textIndent: $input.css("text-indent"),
                textRendering: $input.css("text-rendering"),
                textTransform: $input.css("text-transform")
            }).insertAfter($input);
        }
        function areQueriesEquivalent(a, b) {
            return Input.normalizeQuery(a) === Input.normalizeQuery(b);
        }
        function withModifier($e) {
            return $e.altKey || $e.ctrlKey || $e.metaKey || $e.shiftKey;
        }
    }();
    var Dataset = function() {
        
        var datasetKey = "ttDataset", valueKey = "ttValue", datumKey = "ttDatum";
        function Dataset(o) {
            o = o || {};
            o.templates = o.templates || {};
            if (!o.source) {
                $.error("missing source");
            }
            if (o.name && !isValidName(o.name)) {
                $.error("invalid dataset name: " + o.name);
            }
            this.query = null;
            this.highlight = !!o.highlight;
            this.name = o.name || _.getUniqueId();
            this.source = o.source;
            this.displayFn = getDisplayFn(o.display || o.displayKey);
            this.templates = getTemplates(o.templates, this.displayFn);
            this.$el = $(html.dataset.replace("%CLASS%", this.name));
        }
        Dataset.extractDatasetName = function extractDatasetName(el) {
            return $(el).data(datasetKey);
        };
        Dataset.extractValue = function extractDatum(el) {
            return $(el).data(valueKey);
        };
        Dataset.extractDatum = function extractDatum(el) {
            return $(el).data(datumKey);
        };
        _.mixin(Dataset.prototype, EventEmitter, {
            _render: function render(query, suggestions) {
                if (!this.$el) {
                    return;
                }
                var that = this, hasSuggestions;
                this.$el.empty();
                hasSuggestions = suggestions && suggestions.length;
                if (!hasSuggestions && this.templates.empty) {
                    this.$el.html(getEmptyHtml()).prepend(that.templates.header ? getHeaderHtml() : null).append(that.templates.footer ? getFooterHtml() : null);
                } else if (hasSuggestions) {
                    this.$el.html(getSuggestionsHtml()).prepend(that.templates.header ? getHeaderHtml() : null).append(that.templates.footer ? getFooterHtml() : null);
                }
                this.trigger("rendered");
                function getEmptyHtml() {
                    return that.templates.empty({
                        query: query,
                        isEmpty: true
                    });
                }
                function getSuggestionsHtml() {
                    var $suggestions, nodes;
                    $suggestions = $(html.suggestions).css(css.suggestions);
                    nodes = _.map(suggestions, getSuggestionNode);
                    $suggestions.append.apply($suggestions, nodes);
                    that.highlight && highlight({
                        className: "tt-highlight",
                        node: $suggestions[0],
                        pattern: query
                    });
                    return $suggestions;
                    function getSuggestionNode(suggestion) {
                        var $el;
                        $el = $(html.suggestion).append(that.templates.suggestion(suggestion)).data(datasetKey, that.name).data(valueKey, that.displayFn(suggestion)).data(datumKey, suggestion);
                        $el.children().each(function() {
                            $(this).css(css.suggestionChild);
                        });
                        return $el;
                    }
                }
                function getHeaderHtml() {
                    return that.templates.header({
                        query: query,
                        isEmpty: !hasSuggestions
                    });
                }
                function getFooterHtml() {
                    return that.templates.footer({
                        query: query,
                        isEmpty: !hasSuggestions
                    });
                }
            },
            getRoot: function getRoot() {
                return this.$el;
            },
            update: function update(query) {
                var that = this;
                this.query = query;
                this.canceled = false;
                this.source(query, render);
                function render(suggestions) {
                    if (!that.canceled && query === that.query) {
                        that._render(query, suggestions);
                    }
                }
            },
            cancel: function cancel() {
                this.canceled = true;
            },
            clear: function clear() {
                this.cancel();
                this.$el.empty();
                this.trigger("rendered");
            },
            isEmpty: function isEmpty() {
                return this.$el.is(":empty");
            },
            destroy: function destroy() {
                this.$el = null;
            }
        });
        return Dataset;
        function getDisplayFn(display) {
            display = display || "value";
            return _.isFunction(display) ? display : displayFn;
            function displayFn(obj) {
                return obj[display];
            }
        }
        function getTemplates(templates, displayFn) {
            return {
                empty: templates.empty && _.templatify(templates.empty),
                header: templates.header && _.templatify(templates.header),
                footer: templates.footer && _.templatify(templates.footer),
                suggestion: templates.suggestion || suggestionTemplate
            };
            function suggestionTemplate(context) {
                return "<p>" + displayFn(context) + "</p>";
            }
        }
        function isValidName(str) {
            return /^[_a-zA-Z0-9-]+$/.test(str);
        }
    }();
    var Dropdown = function() {
        
        function Dropdown(o) {
            var that = this, onSuggestionClick, onSuggestionMouseEnter, onSuggestionMouseLeave;
            o = o || {};
            if (!o.menu) {
                $.error("menu is required");
            }
            this.isOpen = false;
            this.isEmpty = true;
            this.datasets = _.map(o.datasets, initializeDataset);
            onSuggestionClick = _.bind(this._onSuggestionClick, this);
            onSuggestionMouseEnter = _.bind(this._onSuggestionMouseEnter, this);
            onSuggestionMouseLeave = _.bind(this._onSuggestionMouseLeave, this);
            this.$menu = $(o.menu).on("click.tt", ".tt-suggestion", onSuggestionClick).on("mouseenter.tt", ".tt-suggestion", onSuggestionMouseEnter).on("mouseleave.tt", ".tt-suggestion", onSuggestionMouseLeave);
            _.each(this.datasets, function(dataset) {
                that.$menu.append(dataset.getRoot());
                dataset.onSync("rendered", that._onRendered, that);
            });
        }
        _.mixin(Dropdown.prototype, EventEmitter, {
            _onSuggestionClick: function onSuggestionClick($e) {
                this.trigger("suggestionClicked", $($e.currentTarget));
            },
            _onSuggestionMouseEnter: function onSuggestionMouseEnter($e) {
                this._removeCursor();
                this._setCursor($($e.currentTarget), true);
            },
            _onSuggestionMouseLeave: function onSuggestionMouseLeave() {
                this._removeCursor();
            },
            _onRendered: function onRendered() {
                this.isEmpty = _.every(this.datasets, isDatasetEmpty);
                this.isEmpty ? this._hide() : this.isOpen && this._show();
                this.trigger("datasetRendered");
                function isDatasetEmpty(dataset) {
                    return dataset.isEmpty();
                }
            },
            _hide: function() {
                this.$menu.hide();
            },
            _show: function() {
                this.$menu.css("display", "block");
            },
            _getSuggestions: function getSuggestions() {
                return this.$menu.find(".tt-suggestion");
            },
            _getCursor: function getCursor() {
                return this.$menu.find(".tt-cursor").first();
            },
            _setCursor: function setCursor($el, silent) {
                $el.first().addClass("tt-cursor");
                !silent && this.trigger("cursorMoved");
            },
            _removeCursor: function removeCursor() {
                this._getCursor().removeClass("tt-cursor");
            },
            _moveCursor: function moveCursor(increment) {
                var $suggestions, $oldCursor, newCursorIndex, $newCursor;
                if (!this.isOpen) {
                    return;
                }
                $oldCursor = this._getCursor();
                $suggestions = this._getSuggestions();
                this._removeCursor();
                newCursorIndex = $suggestions.index($oldCursor) + increment;
                newCursorIndex = (newCursorIndex + 1) % ($suggestions.length + 1) - 1;
                if (newCursorIndex === -1) {
                    this.trigger("cursorRemoved");
                    return;
                } else if (newCursorIndex < -1) {
                    newCursorIndex = $suggestions.length - 1;
                }
                this._setCursor($newCursor = $suggestions.eq(newCursorIndex));
                this._ensureVisible($newCursor);
            },
            _ensureVisible: function ensureVisible($el) {
                var elTop, elBottom, menuScrollTop, menuHeight;
                elTop = $el.position().top;
                elBottom = elTop + $el.outerHeight(true);
                menuScrollTop = this.$menu.scrollTop();
                menuHeight = this.$menu.height() + parseInt(this.$menu.css("paddingTop"), 10) + parseInt(this.$menu.css("paddingBottom"), 10);
                if (elTop < 0) {
                    this.$menu.scrollTop(menuScrollTop + elTop);
                } else if (menuHeight < elBottom) {
                    this.$menu.scrollTop(menuScrollTop + (elBottom - menuHeight));
                }
            },
            close: function close() {
                if (this.isOpen) {
                    this.isOpen = false;
                    this._removeCursor();
                    this._hide();
                    this.trigger("closed");
                }
            },
            open: function open() {
                if (!this.isOpen) {
                    this.isOpen = true;
                    !this.isEmpty && this._show();
                    this.trigger("opened");
                }
            },
            setLanguageDirection: function setLanguageDirection(dir) {
                this.$menu.css(dir === "ltr" ? css.ltr : css.rtl);
            },
            moveCursorUp: function moveCursorUp() {
                this._moveCursor(-1);
            },
            moveCursorDown: function moveCursorDown() {
                this._moveCursor(+1);
            },
            getDatumForSuggestion: function getDatumForSuggestion($el) {
                var datum = null;
                if ($el.length) {
                    datum = {
                        raw: Dataset.extractDatum($el),
                        value: Dataset.extractValue($el),
                        datasetName: Dataset.extractDatasetName($el)
                    };
                }
                return datum;
            },
            getDatumForCursor: function getDatumForCursor() {
                return this.getDatumForSuggestion(this._getCursor().first());
            },
            getDatumForTopSuggestion: function getDatumForTopSuggestion() {
                return this.getDatumForSuggestion(this._getSuggestions().first());
            },
            update: function update(query) {
                _.each(this.datasets, updateDataset);
                function updateDataset(dataset) {
                    dataset.update(query);
                }
            },
            empty: function empty() {
                _.each(this.datasets, clearDataset);
                this.isEmpty = true;
                function clearDataset(dataset) {
                    dataset.clear();
                }
            },
            isVisible: function isVisible() {
                return this.isOpen && !this.isEmpty;
            },
            destroy: function destroy() {
                this.$menu.off(".tt");
                this.$menu = null;
                _.each(this.datasets, destroyDataset);
                function destroyDataset(dataset) {
                    dataset.destroy();
                }
            }
        });
        return Dropdown;
        function initializeDataset(oDataset) {
            return new Dataset(oDataset);
        }
    }();
    var Typeahead = function() {
        
        var attrsKey = "ttAttrs";
        function Typeahead(o) {
            var $menu, $input, $hint;
            o = o || {};
            if (!o.input) {
                $.error("missing input");
            }
            this.isActivated = false;
            this.autoselect = !!o.autoselect;
            this.minLength = _.isNumber(o.minLength) ? o.minLength : 1;
            this.$node = buildDom(o.input, o.withHint);
            $menu = this.$node.find(".tt-dropdown-menu");
            $input = this.$node.find(".tt-input");
            $hint = this.$node.find(".tt-hint");
            $input.on("blur.tt", function($e) {
                var active, isActive, hasActive;
                active = document.activeElement;
                isActive = $menu.is(active);
                hasActive = $menu.has(active).length > 0;
                if (_.isMsie() && (isActive || hasActive)) {
                    $e.preventDefault();
                    $e.stopImmediatePropagation();
                    _.defer(function() {
                        $input.focus();
                    });
                }
            });
            $menu.on("mousedown.tt", function($e) {
                $e.preventDefault();
            });
            this.eventBus = o.eventBus || new EventBus({
                el: $input
            });
            this.dropdown = new Dropdown({
                menu: $menu,
                datasets: o.datasets
            }).onSync("suggestionClicked", this._onSuggestionClicked, this).onSync("cursorMoved", this._onCursorMoved, this).onSync("cursorRemoved", this._onCursorRemoved, this).onSync("opened", this._onOpened, this).onSync("closed", this._onClosed, this).onAsync("datasetRendered", this._onDatasetRendered, this);
            this.input = new Input({
                input: $input,
                hint: $hint
            }).onSync("focused", this._onFocused, this).onSync("blurred", this._onBlurred, this).onSync("enterKeyed", this._onEnterKeyed, this).onSync("tabKeyed", this._onTabKeyed, this).onSync("escKeyed", this._onEscKeyed, this).onSync("upKeyed", this._onUpKeyed, this).onSync("downKeyed", this._onDownKeyed, this).onSync("leftKeyed", this._onLeftKeyed, this).onSync("rightKeyed", this._onRightKeyed, this).onSync("queryChanged", this._onQueryChanged, this).onSync("whitespaceChanged", this._onWhitespaceChanged, this);
            this._setLanguageDirection();
        }
        _.mixin(Typeahead.prototype, {
            _onSuggestionClicked: function onSuggestionClicked(type, $el) {
                var datum;
                if (datum = this.dropdown.getDatumForSuggestion($el)) {
                    this._select(datum);
                }
            },
            _onCursorMoved: function onCursorMoved() {
                var datum = this.dropdown.getDatumForCursor();
                this.input.setInputValue(datum.value, true);
                this.eventBus.trigger("cursorchanged", datum.raw, datum.datasetName);
            },
            _onCursorRemoved: function onCursorRemoved() {
                this.input.resetInputValue();
                this._updateHint();
            },
            _onDatasetRendered: function onDatasetRendered() {
                this._updateHint();
            },
            _onOpened: function onOpened() {
                this._updateHint();
                this.eventBus.trigger("opened");
            },
            _onClosed: function onClosed() {
                this.input.clearHint();
                this.eventBus.trigger("closed");
            },
            _onFocused: function onFocused() {
                this.isActivated = true;
                this.dropdown.open();
            },
            _onBlurred: function onBlurred() {
                this.isActivated = false;
                this.dropdown.empty();
                this.dropdown.close();
            },
            _onEnterKeyed: function onEnterKeyed(type, $e) {
                var cursorDatum, topSuggestionDatum;
                cursorDatum = this.dropdown.getDatumForCursor();
                topSuggestionDatum = this.dropdown.getDatumForTopSuggestion();
                if (cursorDatum) {
                    this._select(cursorDatum);
                    $e.preventDefault();
                } else if (this.autoselect && topSuggestionDatum) {
                    this._select(topSuggestionDatum);
                    $e.preventDefault();
                }
            },
            _onTabKeyed: function onTabKeyed(type, $e) {
                var datum;
                if (datum = this.dropdown.getDatumForCursor()) {
                    this._select(datum);
                    $e.preventDefault();
                } else {
                    this._autocomplete(true);
                }
            },
            _onEscKeyed: function onEscKeyed() {
                this.dropdown.close();
                this.input.resetInputValue();
            },
            _onUpKeyed: function onUpKeyed() {
                var query = this.input.getQuery();
                this.dropdown.isEmpty && query.length >= this.minLength ? this.dropdown.update(query) : this.dropdown.moveCursorUp();
                this.dropdown.open();
            },
            _onDownKeyed: function onDownKeyed() {
                var query = this.input.getQuery();
                this.dropdown.isEmpty && query.length >= this.minLength ? this.dropdown.update(query) : this.dropdown.moveCursorDown();
                this.dropdown.open();
            },
            _onLeftKeyed: function onLeftKeyed() {
                this.dir === "rtl" && this._autocomplete();
            },
            _onRightKeyed: function onRightKeyed() {
                this.dir === "ltr" && this._autocomplete();
            },
            _onQueryChanged: function onQueryChanged(e, query) {
                this.input.clearHintIfInvalid();
                query.length >= this.minLength ? this.dropdown.update(query) : this.dropdown.empty();
                this.dropdown.open();
                this._setLanguageDirection();
            },
            _onWhitespaceChanged: function onWhitespaceChanged() {
                this._updateHint();
                this.dropdown.open();
            },
            _setLanguageDirection: function setLanguageDirection() {
                var dir;
                if (this.dir !== (dir = this.input.getLanguageDirection())) {
                    this.dir = dir;
                    this.$node.css("direction", dir);
                    this.dropdown.setLanguageDirection(dir);
                }
            },
            _updateHint: function updateHint() {
                var datum, val, query, escapedQuery, frontMatchRegEx, match;
                datum = this.dropdown.getDatumForTopSuggestion();
                if (datum && this.dropdown.isVisible() && !this.input.hasOverflow()) {
                    val = this.input.getInputValue();
                    query = Input.normalizeQuery(val);
                    escapedQuery = _.escapeRegExChars(query);
                    frontMatchRegEx = new RegExp("^(?:" + escapedQuery + ")(.+$)", "i");
                    match = frontMatchRegEx.exec(datum.value);
                    match ? this.input.setHint(val + match[1]) : this.input.clearHint();
                } else {
                    this.input.clearHint();
                }
            },
            _autocomplete: function autocomplete(laxCursor) {
                var hint, query, isCursorAtEnd, datum;
                hint = this.input.getHint();
                query = this.input.getQuery();
                isCursorAtEnd = laxCursor || this.input.isCursorAtEnd();
                if (hint && query !== hint && isCursorAtEnd) {
                    datum = this.dropdown.getDatumForTopSuggestion();
                    datum && this.input.setInputValue(datum.value);
                    this.eventBus.trigger("autocompleted", datum.raw, datum.datasetName);
                }
            },
            _select: function select(datum) {
                this.input.setQuery(datum.value);
                this.input.setInputValue(datum.value, true);
                this._setLanguageDirection();
                this.eventBus.trigger("selected", datum.raw, datum.datasetName);
                this.dropdown.close();
                _.defer(_.bind(this.dropdown.empty, this.dropdown));
            },
            open: function open() {
                this.dropdown.open();
            },
            close: function close() {
                this.dropdown.close();
            },
            setVal: function setVal(val) {
                val = _.toStr(val);
                if (this.isActivated) {
                    this.input.setInputValue(val);
                } else {
                    this.input.setQuery(val);
                    this.input.setInputValue(val, true);
                }
                this._setLanguageDirection();
            },
            getVal: function getVal() {
                return this.input.getQuery();
            },
            destroy: function destroy() {
                this.input.destroy();
                this.dropdown.destroy();
                destroyDomStructure(this.$node);
                this.$node = null;
            }
        });
        return Typeahead;
        function buildDom(input, withHint) {
            var $input, $wrapper, $dropdown, $hint;
            $input = $(input);
            $wrapper = $(html.wrapper).css(css.wrapper);
            $dropdown = $(html.dropdown).css(css.dropdown);
            $hint = $input.clone().css(css.hint).css(getBackgroundStyles($input));
            $hint.val("").removeData().addClass("tt-hint").removeAttr("id name placeholder required").prop("readonly", true).attr({
                autocomplete: "off",
                spellcheck: "false",
                tabindex: -1
            });
            $input.data(attrsKey, {
                dir: $input.attr("dir"),
                autocomplete: $input.attr("autocomplete"),
                spellcheck: $input.attr("spellcheck"),
                style: $input.attr("style")
            });
            $input.addClass("tt-input").attr({
                autocomplete: "off",
                spellcheck: false
            }).css(withHint ? css.input : css.inputWithNoHint);
            try {
                !$input.attr("dir") && $input.attr("dir", "auto");
            } catch (e) {}
            return $input.wrap($wrapper).parent().prepend(withHint ? $hint : null).append($dropdown);
        }
        function getBackgroundStyles($el) {
            return {
                backgroundAttachment: $el.css("background-attachment"),
                backgroundClip: $el.css("background-clip"),
                backgroundColor: $el.css("background-color"),
                backgroundImage: $el.css("background-image"),
                backgroundOrigin: $el.css("background-origin"),
                backgroundPosition: $el.css("background-position"),
                backgroundRepeat: $el.css("background-repeat"),
                backgroundSize: $el.css("background-size")
            };
        }
        function destroyDomStructure($node) {
            var $input = $node.find(".tt-input");
            _.each($input.data(attrsKey), function(val, key) {
                _.isUndefined(val) ? $input.removeAttr(key) : $input.attr(key, val);
            });
            $input.detach().removeData(attrsKey).removeClass("tt-input").insertAfter($node);
            $node.remove();
        }
    }();
    (function() {
        
        var old, typeaheadKey, methods;
        old = $.fn.typeahead;
        typeaheadKey = "ttTypeahead";
        methods = {
            initialize: function initialize(o, datasets) {
                datasets = _.isArray(datasets) ? datasets : [].slice.call(arguments, 1);
                o = o || {};
                return this.each(attach);
                function attach() {
                    var $input = $(this), eventBus, typeahead;
                    _.each(datasets, function(d) {
                        d.highlight = !!o.highlight;
                    });
                    typeahead = new Typeahead({
                        input: $input,
                        eventBus: eventBus = new EventBus({
                            el: $input
                        }),
                        withHint: _.isUndefined(o.hint) ? true : !!o.hint,
                        minLength: o.minLength,
                        autoselect: o.autoselect,
                        datasets: datasets
                    });
                    $input.data(typeaheadKey, typeahead);
                }
            },
            open: function open() {
                return this.each(openTypeahead);
                function openTypeahead() {
                    var $input = $(this), typeahead;
                    if (typeahead = $input.data(typeaheadKey)) {
                        typeahead.open();
                    }
                }
            },
            close: function close() {
                return this.each(closeTypeahead);
                function closeTypeahead() {
                    var $input = $(this), typeahead;
                    if (typeahead = $input.data(typeaheadKey)) {
                        typeahead.close();
                    }
                }
            },
            val: function val(newVal) {
                return !arguments.length ? getVal(this.first()) : this.each(setVal);
                function setVal() {
                    var $input = $(this), typeahead;
                    if (typeahead = $input.data(typeaheadKey)) {
                        typeahead.setVal(newVal);
                    }
                }
                function getVal($input) {
                    var typeahead, query;
                    if (typeahead = $input.data(typeaheadKey)) {
                        query = typeahead.getVal();
                    }
                    return query;
                }
            },
            destroy: function destroy() {
                return this.each(unattach);
                function unattach() {
                    var $input = $(this), typeahead;
                    if (typeahead = $input.data(typeaheadKey)) {
                        typeahead.destroy();
                        $input.removeData(typeaheadKey);
                    }
                }
            }
        };
        $.fn.typeahead = function(method) {
            var tts;
            if (methods[method] && method !== "initialize") {
                tts = this.filter(function() {
                    return !!$(this).data(typeaheadKey);
                });
                return methods[method].apply(tts, [].slice.call(arguments, 1));
            } else {
                return methods.initialize.apply(this, arguments);
            }
        };
        $.fn.typeahead.noConflict = function noConflict() {
            $.fn.typeahead = old;
            return this;
        };
    })();
    return {};
}));

define("converse-dependencies", [
    "jquery",
    "utils",
    "otr",
    "moment",
    "strophe",
    "strophe.roster",
    "strophe.vcard",
    "strophe.disco",
    "backbone.browserStorage",
    "backbone.overview",
    "jquery.browser",
    "typeahead"
], function($, utils, otr, moment, Strophe) {
    return _.extend({
        'underscore': _,
        'jQuery': $,
        'otr': otr,
        'moment': moment,
        'utils': utils
    }, Strophe);
});

/*!
 * Converse.js (Web-based XMPP instant messaging client)
 * http://conversejs.org
 *
 * Copyright (c) 2012, Jan-Carel Brand <jc@opkode.com>
 * Licensed under the Mozilla Public License (MPL)
 */

// AMD/global registrations
(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        define("converse",
              ["converse-dependencies", "converse-templates"],
            function (dependencies, templates) {
                return factory(
                    templates,
                    dependencies.jQuery,
                    dependencies.$iq,
                    dependencies.$msg,
                    dependencies.$pres,
                    dependencies.$build,
                    dependencies.otr ? dependencies.otr.DSA : undefined,
                    dependencies.otr ? dependencies.otr.OTR : undefined,
                    dependencies.Strophe,
                    dependencies.underscore,
                    dependencies.moment,
                    dependencies.utils,
                    dependencies.SHA1.b64_sha1
                );
            }
        );
    } else {
        root.converse = factory(
            templates,
            jQuery,
            $iq,
            $msg,
            $pres,
            $build,
            DSA,
            OTR,
            Strophe,
            _,
            moment,
            utils,
            b64_sha1
        );
    }
}(this, function (templates, $, $iq, $msg, $pres, $build, DSA, OTR, Strophe, _, moment, utils, b64_sha1) {
    // 
    // Cannot use this due to Safari bug.
    // See https://github.com/jcbrand/converse.js/issues/196
    if (typeof console === "undefined" || typeof console.log === "undefined") {
        console = { log: function () {}, error: function () {} };
    }

    // Configuration of underscore templates (this config is distict to the
    // config of requirejs-tpl in main.js). This one is for normal inline
    // templates.
    // Use Mustache style syntax for variable interpolation
    _.templateSettings = {
        evaluate : /\{\[([\s\S]+?)\]\}/g,
        interpolate : /\{\{([\s\S]+?)\}\}/g
    };

    var contains = function (attr, query) {
        return function (item) {
            if (typeof attr === 'object') {
                var value = false;
                _.each(attr, function (a) {
                    value = value || item.get(a).toLowerCase().indexOf(query.toLowerCase()) !== -1;
                });
                return value;
            } else if (typeof attr === 'string') {
                return item.get(attr).toLowerCase().indexOf(query.toLowerCase()) !== -1;
            } else {
                throw new Error('Wrong attribute type. Must be string or array.');
            }
        };
    };
    contains.not = function (attr, query) {
        return function (item) {
            return !(contains(attr, query)(item));
        };
    };

    // XXX: these can perhaps be moved to src/polyfills.js
    String.prototype.splitOnce = function (delimiter) {
        var components = this.split(delimiter);
        return [components.shift(), components.join(delimiter)];
    };

    $.fn.addEmoticons = function () {
        if (converse.visible_toolbar_buttons.emoticons) {
            if (this.length > 0) {
                this.each(function (i, obj) {
                    var text = $(obj).html();
                    text = text.replace(/&gt;:\)/g, '<span class="emoticon icon-evil"></span>');
                    text = text.replace(/:\)/g, '<span class="emoticon icon-smiley"></span>');
                    text = text.replace(/:\-\)/g, '<span class="emoticon icon-smiley"></span>');
                    text = text.replace(/;\)/g, '<span class="emoticon icon-wink"></span>');
                    text = text.replace(/;\-\)/g, '<span class="emoticon icon-wink"></span>');
                    text = text.replace(/:D/g, '<span class="emoticon icon-grin"></span>');
                    text = text.replace(/:\-D/g, '<span class="emoticon icon-grin"></span>');
                    text = text.replace(/:P/g, '<span class="emoticon icon-tongue"></span>');
                    text = text.replace(/:\-P/g, '<span class="emoticon icon-tongue"></span>');
                    text = text.replace(/:p/g, '<span class="emoticon icon-tongue"></span>');
                    text = text.replace(/:\-p/g, '<span class="emoticon icon-tongue"></span>');
                    text = text.replace(/8\)/g, '<span class="emoticon icon-cool"></span>');
                    text = text.replace(/:S/g, '<span class="emoticon icon-confused"></span>');
                    text = text.replace(/:\\/g, '<span class="emoticon icon-wondering"></span>');
                    text = text.replace(/:\/ /g, '<span class="emoticon icon-wondering"></span>');
                    text = text.replace(/&gt;:\(/g, '<span class="emoticon icon-angry"></span>');
                    text = text.replace(/:\(/g, '<span class="emoticon icon-sad"></span>');
                    text = text.replace(/:\-\(/g, '<span class="emoticon icon-sad"></span>');
                    text = text.replace(/:O/g, '<span class="emoticon icon-shocked"></span>');
                    text = text.replace(/:\-O/g, '<span class="emoticon icon-shocked"></span>');
                    text = text.replace(/\=\-O/g, '<span class="emoticon icon-shocked"></span>');
                    text = text.replace(/\(\^.\^\)b/g, '<span class="emoticon icon-thumbs-up"></span>');
                    text = text.replace(/&lt;3/g, '<span class="emoticon icon-heart"></span>');
                    $(obj).html(text);
                });
            }
        }
        return this;
    };

    var playNotification = function () {
        var audio;
        if (converse.play_sounds && typeof Audio !== "undefined"){
            audio = new Audio("sounds/msg_received.ogg");
            if (audio.canPlayType('/audio/ogg')) {
                audio.play();
            } else {
                audio = new Audio("/sounds/msg_received.mp3");
                audio.play();
                }
            }
    };

    var converse = {
        plugins: {},
        templates: templates,
        emit: function (evt, data) {
            $(this).trigger(evt, data);
        },
        once: function (evt, handler) {
            $(this).one(evt, handler);
        },
        on: function (evt, handler) {
            $(this).bind(evt, handler);
        },
        off: function (evt, handler) {
            $(this).unbind(evt, handler);
        },
        refreshWebkit: function () {
            /* This works around a webkit bug. Refresh the browser's viewport,
            * otherwise chatboxes are not moved along when one is closed.
            */
            if ($.browser.webkit) {
                var conversejs = document.getElementById('conversejs');
                conversejs.style.display = 'none';
                conversejs.offsetHeight = conversejs.offsetHeight;
                conversejs.style.display = 'block';
            }
        }
    };

    converse.initialize = function (settings, callback) {
        var converse = this;

        // Logging
        Strophe.log = function (level, msg) { converse.log(level+' '+msg, level); };
        Strophe.error = function (msg) { converse.log(msg, 'error'); };

        // Add Strophe Namespaces
        Strophe.addNamespace('CHATSTATES', 'http://jabber.org/protocol/chatstates');
        Strophe.addNamespace('MUC_ADMIN', Strophe.NS.MUC + "#admin");
        Strophe.addNamespace('MUC_OWNER', Strophe.NS.MUC + "#owner");
        Strophe.addNamespace('MUC_REGISTER', "jabber:iq:register");
        Strophe.addNamespace('MUC_ROOMCONF', Strophe.NS.MUC + "#roomconfig");
        Strophe.addNamespace('MUC_USER', Strophe.NS.MUC + "#user");
        Strophe.addNamespace('REGISTER', 'jabber:iq:register');
        Strophe.addNamespace('XFORM', 'jabber:x:data');

        // Add Strophe Statuses
        var i = 0;
        Object.keys(Strophe.Status).forEach(function (key) {
            i = Math.max(i, Strophe.Status[key]);
        });
        Strophe.Status.REGIFAIL        = i + 1;
        Strophe.Status.REGISTERED      = i + 2;
        Strophe.Status.CONFLICT        = i + 3;
        Strophe.Status.NOTACCEPTABLE   = i + 5;

        // Constants
        // ---------
        var UNENCRYPTED = 0;
        var UNVERIFIED= 1;
        var VERIFIED= 2;
        var FINISHED = 3;
        var KEY = {
            ENTER: 13,
            FORWARD_SLASH: 47
        };
        var STATUS_WEIGHTS = {
            'offline':      6,
            'unavailable':  5,
            'xa':           4,
            'away':         3,
            'dnd':          2,
            'online':       1
        };

        // XEP-0085 Chat states
        // http://xmpp.org/extensions/xep-0085.html
        var INACTIVE = 'inactive';
        var ACTIVE = 'active';
        var COMPOSING = 'composing';
        var PAUSED = 'paused';
        var GONE = 'gone';
        this.TIMEOUTS = { // Set as module attr so that we can override in tests.
            'PAUSED':     20000,
            'INACTIVE':   90000
        };
        var HAS_CSPRNG = ((typeof crypto !== 'undefined') &&
            ((typeof crypto.randomBytes === 'function') ||
                (typeof crypto.getRandomValues === 'function')
        ));
        var HAS_CRYPTO = HAS_CSPRNG && (
            (typeof CryptoJS !== "undefined") &&
            (typeof OTR !== "undefined") &&
            (typeof DSA !== "undefined")
        );
        var OPENED = 'opened';
        var CLOSED = 'closed';

        // Translation machinery
        // ---------------------
        this.i18n = settings.i18n ? settings.i18n : locales.en;
        var __ = $.proxy(utils.__, this);
        var ___ = utils.___;

        // Default configuration values
        // ----------------------------
        this.default_settings = {
            allow_contact_requests: true,
            allow_dragresize: true,
            allow_logout: true,
            allow_muc: true,
            allow_otr: true,
            allow_registration: true,
            animate: true,
            auto_list_rooms: false,
            auto_reconnect: false,
            auto_subscribe: false,
            bosh_service_url: undefined, // The BOSH connection manager URL.
            cache_otr_key: false,
            debug: false,
            domain_placeholder: __(" e.g. conversejs.org"),  // Placeholder text shown in the domain input on the registration form
            default_box_height: 400, // The default height, in pixels, for the control box, chat boxes and chatrooms.
            expose_rid_and_sid: false,
            forward_messages: false,
            hide_muc_server: false,
            hide_offline_users: false,
            jid: undefined,
            keepalive: false,
            message_carbons: false,
            no_trimming: false, // Set to true for phantomjs tests (where browser apparently has no width)
            play_sounds: false,
            prebind: false,
            prebind_url: null,
            providers_link: 'https://xmpp.net/directory.php', // Link to XMPP providers shown on registration page
            rid: undefined,
            roster_groups: false,
            show_controlbox_by_default: false,
            show_only_online_users: false,
            show_toolbar: true,
            sid: undefined,
            storage: 'session',
            use_otr_by_default: false,
            use_vcards: true,
            visible_toolbar_buttons: {
                'emoticons': true,
                'call': false,
                'clear': true,
                'toggle_participants': true
            },
            websocket_url: undefined,
            xhr_custom_status: false,
            xhr_custom_status_url: '',
            xhr_user_search: false,
            xhr_user_search_url: ''
        };
        _.extend(this, this.default_settings);
        // Allow only whitelisted configuration attributes to be overwritten
        _.extend(this, _.pick(settings, Object.keys(this.default_settings)));

        if (settings.visible_toolbar_buttons) {
            _.extend(
                this.visible_toolbar_buttons,
                _.pick(settings.visible_toolbar_buttons, [
                    'emoticons', 'call', 'clear', 'toggle_participants'
                ]
            ));
        }
        $.fx.off = !this.animate;

        // Only allow OTR if we have the capability
        this.allow_otr = this.allow_otr && HAS_CRYPTO;

        // Only use OTR by default if allow OTR is enabled to begin with
        this.use_otr_by_default = this.use_otr_by_default && this.allow_otr;

        // Translation aware constants
        // ---------------------------
        var OTR_CLASS_MAPPING = {};
        OTR_CLASS_MAPPING[UNENCRYPTED] = 'unencrypted';
        OTR_CLASS_MAPPING[UNVERIFIED] = 'unverified';
        OTR_CLASS_MAPPING[VERIFIED] = 'verified';
        OTR_CLASS_MAPPING[FINISHED] = 'finished';

        var OTR_TRANSLATED_MAPPING  = {};
        OTR_TRANSLATED_MAPPING[UNENCRYPTED] = __('unencrypted');
        OTR_TRANSLATED_MAPPING[UNVERIFIED] = __('unverified');
        OTR_TRANSLATED_MAPPING[VERIFIED] = __('verified');
        OTR_TRANSLATED_MAPPING[FINISHED] = __('finished');

        var STATUSES = {
            'dnd': __('This contact is busy'),
            'online': __('This contact is online'),
            'offline': __('This contact is offline'),
            'unavailable': __('This contact is unavailable'),
            'xa': __('This contact is away for an extended period'),
            'away': __('This contact is away')
        };
        var DESC_GROUP_TOGGLE = __('Click to hide these contacts');

        var HEADER_CURRENT_CONTACTS =  __('My contacts');
        var HEADER_PENDING_CONTACTS = __('Pending contacts');
        var HEADER_REQUESTING_CONTACTS = __('Contact requests');
        var HEADER_UNGROUPED = __('Ungrouped');

        var LABEL_CONTACTS = __('Contacts');
        var LABEL_GROUPS = __('Groups');

        var HEADER_WEIGHTS = {};
        HEADER_WEIGHTS[HEADER_CURRENT_CONTACTS]    = 0;
        HEADER_WEIGHTS[HEADER_UNGROUPED]           = 1;
        HEADER_WEIGHTS[HEADER_REQUESTING_CONTACTS] = 2;
        HEADER_WEIGHTS[HEADER_PENDING_CONTACTS]    = 3;

        // Module-level variables
        // ----------------------
        this.callback = callback || function () {};
        this.initial_presence_sent = 0;
        this.msg_counter = 0;

        // Module-level functions
        // ----------------------
        this.giveFeedback = function (message, klass) {
            $('.conn-feedback').each(function (idx, el) {
                var $el = $(el);
                $el.addClass('conn-feedback').text(message);
                if (klass) {
                    $el.addClass(klass);
                } else {
                    $el.removeClass('error');
                }
            });
        };

        this.log = function (txt, level) {
            if (this.debug) {
                if (level == 'error') {
                    console.log('ERROR: '+txt);
                } else {
                    console.log(txt);
                }
            }
        };

        this.getVCard = function (jid, callback, errback) {
            if (!this.use_vcards) {
                if (callback) {
                    callback(jid, jid);
                }
                return;
            }
            converse.connection.vcard.get(
                $.proxy(function (iq) {
                    // Successful callback
                    var $vcard = $(iq).find('vCard');
                    var fullname = $vcard.find('FN').text(),
                        img = $vcard.find('BINVAL').text(),
                        img_type = $vcard.find('TYPE').text(),
                        url = $vcard.find('URL').text();
                    if (jid) {
                        var contact = converse.roster.get(jid);
                        if (contact) {
                            fullname = _.isEmpty(fullname)? contact.get('fullname') || jid: fullname;
                            contact.save({
                                'fullname': fullname,
                                'image_type': img_type,
                                'image': img,
                                'url': url,
                                'vcard_updated': moment().format()
                            });
                        }
                    }
                    if (callback) {
                        callback(jid, fullname, img, img_type, url);
                    }
                }, this),
                jid,
                function (iq) {
                    // Error callback
                    var contact = converse.roster.get(jid);
                    if (contact) {
                        contact.save({
                            'vcard_updated': moment().format()
                        });
                    }
                    if (errback) {
                        errback(jid, iq);
                    }
                }
            );
        };

        this.reconnect = function () {
            converse.giveFeedback(__('Reconnecting'), 'error');
            converse.emit('reconnect');
            if (!converse.prebind) {
                this.connection.connect(
                    this.connection.jid,
                    this.connection.pass,
                    function (status, condition) {
                        converse.onConnect(status, condition, true);
                    },
                    this.connection.wait,
                    this.connection.hold,
                    this.connection.route
                );
            }
        };

        this.renderLoginPanel = function () {
            converse._tearDown();
            var view = converse.chatboxviews.get('controlbox');
            view.model.set({connected:false});
            view.renderLoginPanel();
        };

        this.onConnect = function (status, condition, reconnect) {
            if ((status === Strophe.Status.CONNECTED) ||
                (status === Strophe.Status.ATTACHED)) {
                if ((typeof reconnect !== 'undefined') && (reconnect)) {
                    converse.log(status === Strophe.Status.CONNECTED ? 'Reconnected' : 'Reattached');
                    converse.onReconnected();
                } else {
                    converse.log(status === Strophe.Status.CONNECTED ? 'Connected' : 'Attached');
                    converse.onConnected();
                }
            } else if (status === Strophe.Status.DISCONNECTED) {
                if (converse.auto_reconnect) {
                    converse.reconnect();
                } else {
                    converse.renderLoginPanel();
                }
            } else if (status === Strophe.Status.Error) {
                converse.giveFeedback(__('Error'), 'error');
            } else if (status === Strophe.Status.CONNECTING) {
                converse.giveFeedback(__('Connecting'));
            } else if (status === Strophe.Status.AUTHENTICATING) {
                converse.giveFeedback(__('Authenticating'));
            } else if (status === Strophe.Status.AUTHFAIL) {
                converse.giveFeedback(__('Authentication Failed'), 'error');
                converse.connection.disconnect(__('Authentication Failed'));
            } else if (status === Strophe.Status.DISCONNECTING) {
                if (!converse.connection.connected) {
                    converse.renderLoginPanel();
                }
                if (condition) {
                    converse.giveFeedback(condition, 'error');
                }
            }
        };

        this.applyHeightResistance = function (height) {
            /* This method applies some resistance/gravity around the
             * "default_box_height". If "height" is close enough to
             * default_box_height, then that is returned instead.
             */
            if (typeof height === 'undefined') {
                return converse.default_box_height;
            }
            var resistance = 10;
            if ((height !== converse.default_box_height) &&
                (Math.abs(height - converse.default_box_height) < resistance)) {
                return converse.default_box_height;
            }
            return height;
        };

        this.updateMsgCounter = function () {
            if (this.msg_counter > 0) {
                if (document.title.search(/^Messages \(\d+\) /) == -1) {
                    document.title = "Messages (" + this.msg_counter + ") " + document.title;
                } else {
                    document.title = document.title.replace(/^Messages \(\d+\) /, "Messages (" + this.msg_counter + ") ");
                }
                window.blur();
                window.focus();
            } else if (document.title.search(/^Messages \(\d+\) /) != -1) {
                document.title = document.title.replace(/^Messages \(\d+\) /, "");
            }
        };

        this.incrementMsgCounter = function () {
            this.msg_counter += 1;
            this.updateMsgCounter();
        };

        this.clearMsgCounter = function () {
            this.msg_counter = 0;
            this.updateMsgCounter();
        };

        this.initStatus = function (callback) {
            this.xmppstatus = new this.XMPPStatus();
            var id = b64_sha1('converse.xmppstatus-'+converse.bare_jid);
            this.xmppstatus.id = id; // Appears to be necessary for backbone.browserStorage
            this.xmppstatus.browserStorage = new Backbone.BrowserStorage[converse.storage](id);
            this.xmppstatus.fetch({success: callback, error: callback});
        };

        this.initSession = function () {
            this.session = new this.BOSHSession();
            var id = b64_sha1('converse.bosh-session');
            this.session.id = id; // Appears to be necessary for backbone.browserStorage
            this.session.browserStorage = new Backbone.BrowserStorage[converse.storage](id);
            this.session.fetch();
            $(window).on('beforeunload', $.proxy(function () {
                if (converse.connection.authenticated) {
                    this.setSession();
                } else {
                    this.clearSession();
                }
            }, this));
        };

        this.clearSession = function () {
            this.roster.browserStorage._clear();
            this.session.browserStorage._clear();
            // XXX: this should perhaps go into the beforeunload handler
            converse.chatboxes.get('controlbox').save({'connected': false});
        };

        this.setSession = function () {
            if (this.keepalive) {
                this.session.save({
                    jid: this.connection.jid,
                    rid: this.connection._proto.rid,
                    sid: this.connection._proto.sid
                });
            }
        };

        this.logOut = function () {
            converse.chatboxviews.closeAllChatBoxes(false);
            converse.clearSession();
            converse.connection.disconnect();
        };

        this.registerGlobalEventHandlers = function () {
            $(document).click(function () {
                if ($('.toggle-otr ul').is(':visible')) {
                    $('.toggle-otr ul', this).slideUp();
                }
                if ($('.toggle-smiley ul').is(':visible')) {
                    $('.toggle-smiley ul', this).slideUp();
                }
            });

            $(document).on('mousemove', $.proxy(function (ev) {
                if (!this.resized_chatbox || !this.allow_dragresize) { return true; }
                ev.preventDefault();
                this.resized_chatbox.resizeChatBox(ev);
            }, this));

            $(document).on('mouseup', $.proxy(function (ev) {
                if (!this.resized_chatbox || !this.allow_dragresize) { return true; }
                ev.preventDefault();
                var height = this.applyHeightResistance(this.resized_chatbox.height);
                if (this.connection.connected) {
                    this.resized_chatbox.model.save({'height': height});
                } else {
                    this.resized_chatbox.model.set({'height': height});
                }
                this.resized_chatbox = null;
            }, this));

            $(window).on("blur focus", $.proxy(function (ev) {
                if ((this.windowState != ev.type) && (ev.type == 'focus')) {
                    converse.clearMsgCounter();
                }
                this.windowState = ev.type;
            },this));

            $(window).on("resize", _.debounce($.proxy(function (ev) {
                this.chatboxviews.trimChats();
            },this), 200));
        };

        this.onReconnected = function () {
            // We need to re-register all the event handlers on the newly
            // created connection.
            this.initStatus($.proxy(function () {
                this.registerRosterXHandler();
                this.registerPresenceHandler();
                this.chatboxes.registerMessageHandler();
                converse.xmppstatus.sendPresence();
                this.giveFeedback(__('Contacts'));
            }, this));
        };

        this.enableCarbons = function () {
            /* Ask the XMPP server to enable Message Carbons
             * See XEP-0280 https://xmpp.org/extensions/xep-0280.html#enabling
             */
            if (!this.message_carbons || this.session.get('carbons_enabled')) {
                return;
            }
            var carbons_iq = new Strophe.Builder('iq', {
                from: this.connection.jid,
                id: 'enablecarbons',
                type: 'set'
              })
              .c('enable', {xmlns: 'urn:xmpp:carbons:2'});
            this.connection.addHandler($.proxy(function (iq) {
                if ($(iq).find('error').length > 0) {
                    converse.log('ERROR: An error occured while trying to enable message carbons.');
                } else {
                    this.session.save({carbons_enabled: true});
                    converse.log('Message carbons have been enabled.');
                }
            }, this), null, "iq", null, "enablecarbons");
            this.connection.send(carbons_iq);
        };

        this.onConnected = function () {
            // When reconnecting, there might be some open chat boxes. We don't
            // know whether these boxes are of the same account or not, so we
            // close them now.
            this.chatboxviews.closeAllChatBoxes();
            this.setSession();
            this.jid = this.connection.jid;
            this.bare_jid = Strophe.getBareJidFromJid(this.connection.jid);
            this.domain = Strophe.getDomainFromJid(this.connection.jid);
            this.minimized_chats = new converse.MinimizedChats({model: this.chatboxes});
            this.features = new this.Features();
            this.enableCarbons();
            this.initStatus($.proxy(function () {

                this.chatboxes.onConnected();
                this.giveFeedback(__('Contacts'));
                if (this.callback) {
                    if (this.connection.service === 'jasmine tests') {
                        // XXX: Call back with the internal converse object. This
                        // object should never be exposed to production systems.
                        // 'jasmine tests' is an invalid http bind service value,
                        // so we're sure that this is just for tests.
                        this.callback(this);
                    } else  {
                        this.callback();
                    }
                }
            }, this));
            converse.emit('ready');
        };

        // Backbone Models and Views
        // -------------------------
        this.OTR = Backbone.Model.extend({
            // A model for managing OTR settings.
            getSessionPassphrase: function () {
                if (converse.prebind) {
                    var key = b64_sha1(converse.connection.jid),
                        pass = window.sessionStorage[key];
                    if (typeof pass === 'undefined') {
                        pass = Math.floor(Math.random()*4294967295).toString();
                        window.sessionStorage[key] = pass;
                    }
                    return pass;
                } else {
                    return converse.connection.pass;
                }
            },

            generatePrivateKey: function () {
                var key = new DSA();
                var jid = converse.connection.jid;
                if (converse.cache_otr_key) {
                    var cipher = CryptoJS.lib.PasswordBasedCipher;
                    var pass = this.getSessionPassphrase();
                    if (typeof pass !== "undefined") {
                        // Encrypt the key and set in sessionStorage. Also store instance tag.
                        window.sessionStorage[b64_sha1(jid+'priv_key')] =
                            cipher.encrypt(CryptoJS.algo.AES, key.packPrivate(), pass).toString();
                        window.sessionStorage[b64_sha1(jid+'instance_tag')] = instance_tag;
                        window.sessionStorage[b64_sha1(jid+'pass_check')] =
                            cipher.encrypt(CryptoJS.algo.AES, 'match', pass).toString();
                    }
                }
                return key;
            }
        });

        this.Message = Backbone.Model;
        this.Messages = Backbone.Collection.extend({
            model: converse.Message
        });

        this.ChatBox = Backbone.Model.extend({
            initialize: function () {
                var height = converse.applyHeightResistance(this.get('height'));
                if (this.get('box_id') !== 'controlbox') {
                    this.messages = new converse.Messages();
                    this.messages.browserStorage = new Backbone.BrowserStorage[converse.storage](
                        b64_sha1('converse.messages'+this.get('jid')+converse.bare_jid));
                    this.save({
                        // The chat_state will be set to ACTIVE once the chat box is opened
                        // and we listen for change:chat_state, so shouldn't set it to ACTIVE here.
                        'chat_state': undefined,
                        'box_id' : b64_sha1(this.get('jid')),
                        'height': height,
                        'minimized': this.get('minimized') || false,
                        'num_unread': this.get('num_unread') || 0,
                        'otr_status': this.get('otr_status') || UNENCRYPTED,
                        'time_minimized': this.get('time_minimized') || moment(),
                        'time_opened': this.get('time_opened') || moment().valueOf(),
                        'url': '',
                        'user_id' : Strophe.getNodeFromJid(this.get('jid'))
                    });
                } else {
                    this.set({
                        'height': height,
                        'time_opened': moment(0).valueOf(),
                        'num_unread': this.get('num_unread') || 0
                    });
                }
            },

            maximize: function () {
                this.save({
                    'minimized': false,
                    'time_opened': moment().valueOf()
                });
            },

            minimize: function () {
                this.save({
                    'minimized': true,
                    'time_minimized': moment().format()
                });
            },

            getSession: function (callback) {
                var cipher = CryptoJS.lib.PasswordBasedCipher;
                var result, pass, instance_tag, saved_key, pass_check;
                if (converse.cache_otr_key) {
                    pass = converse.otr.getSessionPassphrase();
                    if (typeof pass !== "undefined") {
                        instance_tag = window.sessionStorage[b64_sha1(this.id+'instance_tag')];
                        saved_key = window.sessionStorage[b64_sha1(this.id+'priv_key')];
                        pass_check = window.sessionStorage[b64_sha1(this.connection.jid+'pass_check')];
                        if (saved_key && instance_tag && typeof pass_check !== 'undefined') {
                            var decrypted = cipher.decrypt(CryptoJS.algo.AES, saved_key, pass);
                            var key = DSA.parsePrivate(decrypted.toString(CryptoJS.enc.Latin1));
                            if (cipher.decrypt(CryptoJS.algo.AES, pass_check, pass).toString(CryptoJS.enc.Latin1) === 'match') {
                                // Verified that the passphrase is still the same
                                this.trigger('showHelpMessages', [__('Re-establishing encrypted session')]);
                                callback({
                                    'key': key,
                                    'instance_tag': instance_tag
                                });
                                return; // Our work is done here
                            }
                        }
                    }
                }
                // We need to generate a new key and instance tag
                this.trigger('showHelpMessages', [
                    __('Generating private key.'),
                    __('Your browser might become unresponsive.')],
                    null,
                    true // show spinner
                );
                setTimeout(function () {
                    callback({
                        'key': converse.otr.generatePrivateKey.apply(this),
                        'instance_tag': OTR.makeInstanceTag()
                    });
                }, 500);
            },

            updateOTRStatus: function (state) {
                switch (state) {
                    case OTR.CONST.STATUS_AKE_SUCCESS:
                        if (this.otr.msgstate === OTR.CONST.MSGSTATE_ENCRYPTED) {
                            this.save({'otr_status': UNVERIFIED});
                        }
                        break;
                    case OTR.CONST.STATUS_END_OTR:
                        if (this.otr.msgstate === OTR.CONST.MSGSTATE_FINISHED) {
                            this.save({'otr_status': FINISHED});
                        } else if (this.otr.msgstate === OTR.CONST.MSGSTATE_PLAINTEXT) {
                            this.save({'otr_status': UNENCRYPTED});
                        }
                        break;
                }
            },

            onSMP: function (type, data) {
                // Event handler for SMP (Socialist's Millionaire Protocol)
                // used by OTR (off-the-record).
                switch (type) {
                    case 'question':
                        this.otr.smpSecret(prompt(__(
                            'Authentication request from %1$s\n\nYour chat contact is attempting to verify your identity, by asking you the question below.\n\n%2$s',
                            [this.get('fullname'), data])));
                        break;
                    case 'trust':
                        if (data === true) {
                            this.save({'otr_status': VERIFIED});
                        } else {
                            this.trigger(
                                'showHelpMessages',
                                [__("Could not verify this user's identify.")],
                                'error');
                            this.save({'otr_status': UNVERIFIED});
                        }
                        break;
                    default:
                        throw new Error('Unknown type.');
                }
            },

            initiateOTR: function (query_msg) {
                // Sets up an OTR object through which we can send and receive
                // encrypted messages.
                //
                // If 'query_msg' is passed in, it means there is an alread incoming
                // query message from our contact. Otherwise, it is us who will
                // send the query message to them.
                this.save({'otr_status': UNENCRYPTED});
                var session = this.getSession($.proxy(function (session) {
                    this.otr = new OTR({
                        fragment_size: 140,
                        send_interval: 200,
                        priv: session.key,
                        instance_tag: session.instance_tag,
                        debug: this.debug
                    });
                    this.otr.on('status', $.proxy(this.updateOTRStatus, this));
                    this.otr.on('smp', $.proxy(this.onSMP, this));

                    this.otr.on('ui', $.proxy(function (msg) {
                        this.trigger('showReceivedOTRMessage', msg);
                    }, this));
                    this.otr.on('io', $.proxy(function (msg) {
                        this.trigger('sendMessageStanza', msg);
                    }, this));
                    this.otr.on('error', $.proxy(function (msg) {
                        this.trigger('showOTRError', msg);
                    }, this));

                    this.trigger('showHelpMessages', [__('Exchanging private key with contact.')]);
                    if (query_msg) {
                        this.otr.receiveMsg(query_msg);
                    } else {
                        this.otr.sendQueryMsg();
                    }
                }, this));
            },

            endOTR: function () {
                if (this.otr) {
                    this.otr.endOtr();
                }
                this.save({'otr_status': UNENCRYPTED});
            },

            createMessage: function ($message) {
                var body = $message.children('body').text(),
                    delayed = $message.find('delay').length > 0,
                    fullname = this.get('fullname'),
                    is_groupchat = $message.attr('type') === 'groupchat',
                    msgid = $message.attr('id'),
                    chat_state = $message.find(COMPOSING).length && COMPOSING ||
                        $message.find(PAUSED).length && PAUSED ||
                        $message.find(INACTIVE).length && INACTIVE ||
                        $message.find(ACTIVE).length && ACTIVE ||
                        $message.find(GONE).length && GONE,
                    stamp, time, sender, from, createMessage;

                if (is_groupchat) {
                    from = Strophe.unescapeNode(Strophe.getResourceFromJid($message.attr('from')));
                } else {
                    from = Strophe.getBareJidFromJid($message.attr('from'));
                }
                fullname = (_.isEmpty(fullname) ? from: fullname).split(' ')[0];
                if (delayed) {
                    stamp = $message.find('delay').attr('stamp');
                    time = stamp;
                } else {
                    time = moment().format();
                }
                if ((is_groupchat && from === this.get('nick')) || (!is_groupchat && from == converse.bare_jid)) {
                    sender = 'me';
                } else {
                    sender = 'them';
                }
                if (!body) {
                    createMessage = this.messages.add;
                } else {
                    createMessage = this.messages.create;
                }
                this.messages.create({
                    chat_state: chat_state,
                    delayed: delayed,
                    fullname: fullname,
                    message: body || undefined,
                    msgid: msgid,
                    sender: sender,
                    time: time
                });
            },

            receiveMessage: function ($message) {
                var $body = $message.children('body');
                var text = ($body.length > 0 ? $body.text() : undefined);
                if ((!text) || (!converse.allow_otr)) {
                    return this.createMessage($message);
                }
                if (text.match(/^\?OTRv23?/)) {
                    this.initiateOTR(text);
                } else {
                    if (_.contains([UNVERIFIED, VERIFIED], this.get('otr_status'))) {
                        this.otr.receiveMsg(text);
                    } else {
                        if (text.match(/^\?OTR/)) {
                            if (!this.otr) {
                                this.initiateOTR(text);
                            } else {
                                this.otr.receiveMsg(text);
                            }
                        } else {
                            // Normal unencrypted message.
                            this.createMessage($message);
                        }
                    }
                }
            }
        });

        this.ChatBoxView = Backbone.View.extend({
            length: 200,
            tagName: 'div',
            className: 'chatbox',
            is_chatroom: false,  // This is not a multi-user chatroom

            events: {
                'click .close-chatbox-button': 'close',
                'click .toggle-chatbox-button': 'minimize',
                'keypress textarea.chat-textarea': 'keyPressed',
                'focus textarea.chat-textarea': 'chatBoxFocused',
                'blur textarea.chat-textarea': 'chatBoxBlurred',
                'click .toggle-smiley': 'toggleEmoticonMenu',
                'click .toggle-smiley ul li': 'insertEmoticon',
                'click .toggle-clear': 'clearMessages',
                'click .toggle-otr': 'toggleOTRMenu',
                'click .start-otr': 'startOTRFromToolbar',
                'click .end-otr': 'endOTR',
                'click .auth-otr': 'authOTR',
                'click .toggle-call': 'toggleCall',
                'mousedown .dragresize-tm': 'onDragResizeStart'
            },

            initialize: function (){
                this.model.messages.on('add', this.onMessageAdded, this);
                this.model.on('show', this.show, this);
                this.model.on('destroy', this.hide, this);
                // TODO check for changed fullname as well
                this.model.on('change:chat_state', this.sendChatState, this);
                this.model.on('change:chat_status', this.onChatStatusChanged, this);
                this.model.on('change:image', this.renderAvatar, this);
                this.model.on('change:otr_status', this.onOTRStatusChanged, this);
                this.model.on('change:minimized', this.onMinimizedChanged, this);
                this.model.on('change:status', this.onStatusChanged, this);
                this.model.on('showOTRError', this.showOTRError, this);
                this.model.on('showHelpMessages', this.showHelpMessages, this);
                this.model.on('sendMessageStanza', this.sendMessageStanza, this);
                this.model.on('showSentOTRMessage', function (text) {
                    this.showMessage({'message': text, 'sender': 'me'});
                }, this);
                this.model.on('showReceivedOTRMessage', function (text) {
                    this.showMessage({'message': text, 'sender': 'them'});
                }, this);

                this.updateVCard();
                this.$el.insertAfter(converse.chatboxviews.get("controlbox").$el);
                this.render().model.messages.fetch({add: true});
                if (this.model.get('minimized')) {
                    this.hide();
                } else {
                    this.show();
                }
                if ((_.contains([UNVERIFIED, VERIFIED], this.model.get('otr_status'))) || converse.use_otr_by_default) {
                    this.model.initiateOTR();
                }
            },

            render: function () {
                this.$el.attr('id', this.model.get('box_id'))
                    .html(converse.templates.chatbox(
                            _.extend(this.model.toJSON(), {
                                    show_toolbar: converse.show_toolbar,
                                    label_personal_message: __('Personal message')
                                }
                            )
                        )
                    );
                this.renderToolbar().renderAvatar();
                converse.emit('chatBoxOpened', this);
                setTimeout(function () {
                    converse.refreshWebkit();
                }, 50);
                return this.showStatusMessage();
            },

            initDragResize: function () {
                this.prev_pageY = 0; // To store last known mouse position
                if (converse.connection.connected) {
                    this.height = this.model.get('height');
                }
                return this;
            },

            showStatusNotification: function (message, keep_old) {
                var $chat_content = this.$el.find('.chat-content');
                if (!keep_old) {
                    $chat_content.find('div.chat-event').remove();
                }
                $chat_content.append($('<div class="chat-event"></div>').text(message));
                this.scrollDown();
            },

            clearChatRoomMessages: function (ev) {
                if (typeof ev !== "undefined") { ev.stopPropagation(); }
                var result = confirm(__("Are you sure you want to clear the messages from this room?"));
                if (result === true) {
                    this.$el.find('.chat-content').empty();
                }
                return this;
            },

            showMessage: function (msg_dict) {
                var $content = this.$el.find('.chat-content'),
                    msg_time = moment(msg_dict.time) || moment,
                    text = msg_dict.message,
                    match = text.match(/^\/(.*?)(?: (.*))?$/),
                    fullname = this.model.get('fullname') || msg_dict.fullname,
                    extra_classes = msg_dict.delayed && 'delayed' || '',
                    template, username;

                if ((match) && (match[1] === 'me')) {
                    text = text.replace(/^\/me/, '');
                    template = converse.templates.action;
                    username = fullname;
                } else  {
                    template = converse.templates.message;
                    username = msg_dict.sender === 'me' && __('me') || fullname;
                }
                $content.find('div.chat-event').remove();

                if (this.is_chatroom && msg_dict.sender == 'them' && (new RegExp("\\b"+this.model.get('nick')+"\\b")).test(text)) {
                    // Add special class to mark groupchat messages in which we
                    // are mentioned.
                    extra_classes += ' mentioned';
                }
                var message = template({
                    'sender': msg_dict.sender,
                    'time': msg_time.format('hh:mm'),
                    'username': username,
                    'message': '',
                    'extra_classes': extra_classes
                });
                $content.append($(message).children('.chat-message-content').first().text(text).addHyperlinks().addEmoticons().parent());
                this.scrollDown();
            },

            showHelpMessages: function (msgs, type, spinner) {
                var $chat_content = this.$el.find('.chat-content'), i,
                    msgs_length = msgs.length;
                for (i=0; i<msgs_length; i++) {
                    $chat_content.append($('<div class="chat-'+(type||'info')+'">'+msgs[i]+'</div>'));
                }
                if (spinner === true) {
                    $chat_content.append('<span class="spinner"/>');
                } else if (spinner === false) {
                    $chat_content.find('span.spinner').remove();
                }
                return this.scrollDown();
            },

            onMessageAdded: function (message) {
                var time = message.get('time'),
                    times = this.model.messages.pluck('time'),
                    previous_message, idx, this_date, prev_date, text, match;

                // If this message is on a different day than the one received
                // prior, then indicate it on the chatbox.
                idx = _.indexOf(times, time)-1;
                if (idx >= 0) {
                    previous_message = this.model.messages.at(idx);
                    prev_date = moment(previous_message.get('time'));
                    if (prev_date.isBefore(time, 'day')) {
                        this_date = moment(time);
                        this.$el.find('.chat-content').append(converse.templates.new_day({
                            isodate: this_date.format("YYYY-MM-DD"),
                            datestring: this_date.format("dddd MMM Do YYYY")
                        }));
                    }
                }
                if (!message.get('message')) {
                    if (message.get('chat_state') === COMPOSING) {
                        this.showStatusNotification(message.get('fullname')+' '+__('is typing'));
                        return;
                    } else if (message.get('chat_state') === PAUSED) {
                        this.showStatusNotification(message.get('fullname')+' '+__('has stopped typing'));
                        return;
                    } else if (_.contains([INACTIVE, ACTIVE], message.get('chat_state'))) {
                        this.$el.find('.chat-content div.chat-event').remove();
                        return;
                    } else if (message.get('chat_state') === GONE) {
                        this.showStatusNotification(message.get('fullname')+' '+__('has gone away'));
                        return;
                    }
                } else {
                    this.showMessage(_.clone(message.attributes));
                }
                if ((message.get('sender') != 'me') && (converse.windowState == 'blur')) {
                    converse.incrementMsgCounter();
                }
                return this.scrollDown();
            },

            sendMessageStanza: function (text) {
                /* Sends the actual XML stanza to the XMPP server.
                 */
                // TODO: Look in ChatPartners to see what resources we have for the recipient.
                // if we have one resource, we sent to only that resources, if we have multiple
                // we send to the bare jid.
                var timestamp = (new Date()).getTime();
                var bare_jid = this.model.get('jid');
                var message = $msg({from: converse.connection.jid, to: bare_jid, type: 'chat', id: timestamp})
                    .c('body').t(text).up()
                    .c(ACTIVE, {'xmlns': Strophe.NS.CHATSTATES});
                converse.connection.send(message);
                if (converse.forward_messages) {
                    // Forward the message, so that other connected resources are also aware of it.
                    var forwarded = $msg({to:converse.bare_jid, type:'chat', id:timestamp})
                                    .c('forwarded', {xmlns:'urn:xmpp:forward:0'})
                                    .c('delay', {xmns:'urn:xmpp:delay',stamp:timestamp}).up()
                                    .cnode(message.tree());
                    converse.connection.send(forwarded);
                }
            },

            sendMessage: function (text) {
                var match = text.replace(/^\s*/, "").match(/^\/(.*)\s*$/), msgs;
                if (match) {
                    if (match[1] === "clear") {
                        return this.clearMessages();
                    }
                    else if (match[1] === "help") {
                        msgs = [
                            '<strong>/help</strong>:'+__('Show this menu')+'',
                            '<strong>/me</strong>:'+__('Write in the third person')+'',
                            '<strong>/clear</strong>:'+__('Remove messages')+''
                            ];
                        this.showHelpMessages(msgs);
                        return;
                    } else if ((converse.allow_otr) && (match[1] === "endotr")) {
                        return this.endOTR();
                    } else if ((converse.allow_otr) && (match[1] === "otr")) {
                        return this.model.initiateOTR();
                    }
                }
                if (_.contains([UNVERIFIED, VERIFIED], this.model.get('otr_status'))) {
                    // Off-the-record encryption is active
                    this.model.otr.sendMsg(text);
                    this.model.trigger('showSentOTRMessage', text);
                } else {
                    // We only save unencrypted messages.
                    var fullname = converse.xmppstatus.get('fullname');
                    fullname = _.isEmpty(fullname)? converse.bare_jid: fullname;
                    this.model.messages.create({
                        fullname: fullname,
                        sender: 'me',
                        time: moment().format(),
                        message: text
                    });
                    this.sendMessageStanza(text);
                }
            },

            sendChatState: function () {
                /* Sends a message with the status of the user in this chat session
                 * as taken from the 'chat_state' attribute of the chat box.
                 * See XEP-0085 Chat State Notifications.
                 */
                converse.connection.send(
                    $msg({'to':this.model.get('jid'), 'type': 'chat'})
                        .c(this.model.get('chat_state'), {'xmlns': Strophe.NS.CHATSTATES})
                );
            },

            setChatState: function (state, no_save) {
                /* Mutator for setting the chat state of this chat session.
                 * Handles clearing of any chat state notification timeouts and
                 * setting new ones if necessary.
                 * Timeouts are set when the  state being set is COMPOSING or PAUSED.
                 * After the timeout, COMPOSING will become PAUSED and PAUSED will become INACTIVE.
                 * See XEP-0085 Chat State Notifications.
                 *
                 *  Parameters:
                 *    (string) state - The chat state (consts ACTIVE, COMPOSING, PAUSED, INACTIVE, GONE)
                 *    (no_save) no_save - Just do the cleanup or setup but don't actually save the state.
                 */
                if (_.contains([ACTIVE, INACTIVE, GONE], state)) {
                    if (typeof this.chat_state_timeout !== 'undefined') {
                        clearTimeout(this.chat_state_timeout);
                        delete this.chat_state_timeout;
                    }
                } else if (state === COMPOSING) {
                    this.chat_state_timeout = setTimeout(
                            $.proxy(this.setChatState, this), converse.TIMEOUTS.PAUSED, PAUSED);
                } else if (state === PAUSED) {
                    this.chat_state_timeout = setTimeout(
                            $.proxy(this.setChatState, this), converse.TIMEOUTS.INACTIVE, INACTIVE);
                }
                if (!no_save && this.model.get('chat_state') != state) {
                    this.model.set('chat_state', state);
                }
                return this;
            },

            keyPressed: function (ev) {
                /* Event handler for when a key is pressed in a chat box textarea.
                 */
                var $textarea = $(ev.target), message;
                if (ev.keyCode == KEY.ENTER) {
                    ev.preventDefault();
                    message = $textarea.val();
                    $textarea.val('').focus();
                    if (message !== '') {
                        if (this.model.get('chatroom')) {
                            this.sendChatRoomMessage(message);
                        } else {
                            this.sendMessage(message);
                        }
                        converse.emit('messageSend', message);
                    }
                    this.setChatState(ACTIVE);
                } else if (!this.model.get('chatroom')) { // chat state data is currently only for single user chat
                    // Set chat state to composing if keyCode is not a forward-slash
                    // (which would imply an internal command and not a message).
                    this.setChatState(COMPOSING, ev.keyCode==KEY.FORWARD_SLASH);
                }
            },

            chatBoxFocused: function (ev) {
                ev.preventDefault();
                this.setChatState(ACTIVE);
            },

            chatBoxBlurred: function (ev) {
                ev.preventDefault();
                this.setChatState(INACTIVE);
            },

            onDragResizeStart: function (ev) {
                if (!converse.allow_dragresize) { return true; }
                // Record element attributes for mouseMove().
                this.height = this.$el.children('.box-flyout').height();
                converse.resized_chatbox = this;
                this.prev_pageY = ev.pageY;
            },

            setChatBoxHeight: function (height) {
                if (!this.model.get('minimized')) {
                    this.$el.children('.box-flyout')[0].style.height = converse.applyHeightResistance(height)+'px';
                }
            },

            resizeChatBox: function (ev) {
                var diff = ev.pageY - this.prev_pageY;
                if (!diff) { return; }
                this.height -= diff;
                this.prev_pageY = ev.pageY;
                this.setChatBoxHeight(this.height);
            },

            clearMessages: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var result = confirm(__("Are you sure you want to clear the messages from this chat box?"));
                if (result === true) {
                    this.$el.find('.chat-content').empty();
                    this.model.messages.reset();
                    this.model.messages.browserStorage._clear();
                }
                return this;
            },

            insertEmoticon: function (ev) {
                ev.stopPropagation();
                this.$el.find('.toggle-smiley ul').slideToggle(200);
                var $textbox = this.$el.find('textarea.chat-textarea');
                var value = $textbox.val();
                var $target = $(ev.target);
                $target = $target.is('a') ? $target : $target.children('a');
                if (value && (value[value.length-1] !== ' ')) {
                    value = value + ' ';
                }
                $textbox.focus().val(value+$target.data('emoticon')+' ');
            },

            toggleEmoticonMenu: function (ev) {
                ev.stopPropagation();
                this.$el.find('.toggle-smiley ul').slideToggle(200);
            },

            toggleOTRMenu: function (ev) {
                ev.stopPropagation();
                this.$el.find('.toggle-otr ul').slideToggle(200);
            },

            showOTRError: function (msg) {
                if (msg == 'Message cannot be sent at this time.') {
                    this.showHelpMessages(
                        [__('Your message could not be sent')], 'error');
                } else if (msg == 'Received an unencrypted message.') {
                    this.showHelpMessages(
                        [__('We received an unencrypted message')], 'error');
                } else if (msg == 'Received an unreadable encrypted message.') {
                    this.showHelpMessages(
                        [__('We received an unreadable encrypted message')],
                        'error');
                } else {
                    this.showHelpMessages(['Encryption error occured: '+msg], 'error');
                }
                console.log("OTR ERROR:"+msg);
            },

            startOTRFromToolbar: function (ev) {
                $(ev.target).parent().parent().slideUp();
                ev.stopPropagation();
                this.model.initiateOTR();
            },

            endOTR: function (ev) {
                if (typeof ev !== "undefined") {
                    ev.preventDefault();
                    ev.stopPropagation();
                }
                this.model.endOTR();
            },

            authOTR: function (ev) {
                var scheme = $(ev.target).data().scheme;
                var result, question, answer;
                if (scheme === 'fingerprint') {
                    result = confirm(__('Here are the fingerprints, please confirm them with %1$s, outside of this chat.\n\nFingerprint for you, %2$s: %3$s\n\nFingerprint for %1$s: %4$s\n\nIf you have confirmed that the fingerprints match, click OK, otherwise click Cancel.', [
                            this.model.get('fullname'),
                            converse.xmppstatus.get('fullname')||converse.bare_jid,
                            this.model.otr.priv.fingerprint(),
                            this.model.otr.their_priv_pk.fingerprint()
                        ]
                    ));
                    if (result === true) {
                        this.model.save({'otr_status': VERIFIED});
                    } else {
                        this.model.save({'otr_status': UNVERIFIED});
                    }
                } else if (scheme === 'smp') {
                    alert(__('You will be prompted to provide a security question and then an answer to that question.\n\nYour contact will then be prompted the same question and if they type the exact same answer (case sensitive), their identity will be verified.'));
                    question = prompt(__('What is your security question?'));
                    if (question) {
                        answer = prompt(__('What is the answer to the security question?'));
                        this.model.otr.smpSecret(answer, question);
                    }
                } else {
                    this.showHelpMessages([__('Invalid authentication scheme provided')], 'error');
                }
            },

            toggleCall: function (ev) {
                ev.stopPropagation();
                converse.emit('callButtonClicked', {
                    connection: converse.connection,
                    model: this.model
                });
            },

            onChatStatusChanged: function (item) {
                var chat_status = item.get('chat_status'),
                    fullname = item.get('fullname');
                fullname = _.isEmpty(fullname)? item.get('jid'): fullname;
                if (this.$el.is(':visible')) {
                    if (chat_status === 'offline') {
                        this.showStatusNotification(fullname+' '+__('has gone offline'));
                    } else if (chat_status === 'away') {
                        this.showStatusNotification(fullname+' '+__('has gone away'));
                    } else if ((chat_status === 'dnd')) {
                        this.showStatusNotification(fullname+' '+__('is busy'));
                    } else if (chat_status === 'online') {
                        this.$el.find('div.chat-event').remove();
                    }
                }
                converse.emit('contactStatusChanged', item.attributes, item.get('chat_status'));
            },

            onStatusChanged: function (item) {
                this.showStatusMessage();
                converse.emit('contactStatusMessageChanged', item.attributes, item.get('status'));
            },

            onOTRStatusChanged: function (item) {
                this.renderToolbar().informOTRChange();
            },

            onMinimizedChanged: function (item) {
                if (item.get('minimized')) {
                    this.hide();
                } else {
                    this.maximize();
                }
            },

            showStatusMessage: function (msg) {
                msg = msg || this.model.get('status');
                if (typeof msg === "string") {
                    this.$el.find('p.user-custom-message').text(msg).attr('title', msg);
                }
                return this;
            },

            close: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                if (converse.connection.connected) {
                    this.model.destroy();
                    this.setChatState(INACTIVE);
                } else {
                    this.hide();
                }
                converse.emit('chatBoxClosed', this);
                return this;
            },

            maximize: function () {
                // Restores a minimized chat box
                this.$el.insertAfter(converse.chatboxviews.get("controlbox").$el).show('fast', $.proxy(function () {
                    converse.refreshWebkit();
                    this.setChatState(ACTIVE).focus();
                    converse.emit('chatBoxMaximized', this);
                }, this));
            },

            minimize: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                // Minimizes a chat box
                this.setChatState(INACTIVE).model.minimize();
                this.$el.hide('fast', converse.refreshwebkit);
                converse.emit('chatBoxMinimized', this);
            },

            updateVCard: function () {
                var jid = this.model.get('jid'),
                    contact = converse.roster.get(jid);
                if ((contact) && (!contact.get('vcard_updated'))) {
                    converse.getVCard(
                        jid,
                        $.proxy(function (jid, fullname, image, image_type, url) {
                            this.model.save({
                                'fullname' : fullname || jid,
                                'url': url,
                                'image_type': image_type,
                                'image': image
                            });
                        }, this),
                        $.proxy(function (stanza) {
                            converse.log("ChatBoxView.initialize: An error occured while fetching vcard");
                        }, this)
                    );
                }
            },

            informOTRChange: function () {
                var data = this.model.toJSON();
                var msgs = [];
                if (data.otr_status == UNENCRYPTED) {
                    msgs.push(__("Your messages are not encrypted anymore"));
                } else if (data.otr_status == UNVERIFIED){
                    msgs.push(__("Your messages are now encrypted but your contact's identity has not been verified."));
                } else if (data.otr_status == VERIFIED){
                    msgs.push(__("Your contact's identify has been verified."));
                } else if (data.otr_status == FINISHED){
                    msgs.push(__("Your contact has ended encryption on their end, you should do the same."));
                }
                return this.showHelpMessages(msgs, 'info', false);
            },

            renderToolbar: function () {
                if (converse.show_toolbar) {
                    var data = this.model.toJSON();
                    if (data.otr_status == UNENCRYPTED) {
                        data.otr_tooltip = __('Your messages are not encrypted. Click here to enable OTR encryption.');
                    } else if (data.otr_status == UNVERIFIED){
                        data.otr_tooltip = __('Your messages are encrypted, but your contact has not been verified.');
                    } else if (data.otr_status == VERIFIED){
                        data.otr_tooltip = __('Your messages are encrypted and your contact verified.');
                    } else if (data.otr_status == FINISHED){
                        data.otr_tooltip = __('Your contact has closed their end of the private session, you should do the same');
                    }
                    this.$el.find('.chat-toolbar').html(
                        converse.templates.toolbar(
                            _.extend(data, {
                                FINISHED: FINISHED,
                                UNENCRYPTED: UNENCRYPTED,
                                UNVERIFIED: UNVERIFIED,
                                VERIFIED: VERIFIED,
                                allow_otr: converse.allow_otr && !this.is_chatroom,
                                label_clear: __('Clear all messages'),
                                label_end_encrypted_conversation: __('End encrypted conversation'),
                                label_hide_participants: __('Hide the list of participants'),
                                label_refresh_encrypted_conversation: __('Refresh encrypted conversation'),
                                label_start_call: __('Start a call'),
                                label_start_encrypted_conversation: __('Start encrypted conversation'),
                                label_verify_with_fingerprints: __('Verify with fingerprints'),
                                label_verify_with_smp: __('Verify with SMP'),
                                label_whats_this: __("What\'s this?"),
                                otr_status_class: OTR_CLASS_MAPPING[data.otr_status],
                                otr_translated_status: OTR_TRANSLATED_MAPPING[data.otr_status],
                                show_call_button: converse.visible_toolbar_buttons.call,
                                show_clear_button: converse.visible_toolbar_buttons.clear,
                                show_emoticons: converse.visible_toolbar_buttons.emoticons,
                                show_participants_toggle: this.is_chatroom && converse.visible_toolbar_buttons.toggle_participants
                            })
                        )
                    );
                }
                return this;
            },

            renderAvatar: function () {
                if (!this.model.get('image')) {
                    return;
                }
                var img_src = 'data:'+this.model.get('image_type')+';base64,'+this.model.get('image'),
                    canvas = $('<canvas height="32px" width="32px" class="avatar"></canvas>').get(0);

                if (!(canvas.getContext && canvas.getContext('2d'))) {
                    return this;
                }
                var ctx = canvas.getContext('2d');
                var img = new Image();   // Create new Image object
                img.onload = function () {
                    var ratio = img.width/img.height;
                    ctx.drawImage(img, 0,0, 35*ratio, 35);
                };
                img.src = img_src;
                this.$el.find('.chat-title').before(canvas);
                return this;
            },

            focus: function () {
                this.$el.find('.chat-textarea').focus();
                converse.emit('chatBoxFocused', this);
                return this;
            },

            hide: function () {
                if (this.$el.is(':visible') && this.$el.css('opacity') == "1") {
                    this.$el.hide();
                    converse.refreshWebkit();
                }
                return this;
            },

            show: function (callback) {
                if (this.$el.is(':visible') && this.$el.css('opacity') == "1") {
                    return this.focus();
                }
                this.$el.fadeIn(callback);
                if (converse.connection.connected) {
                    // Without a connection, we haven't yet initialized
                    // localstorage
                    this.model.save();
                    this.initDragResize();
                }
                this.setChatState(ACTIVE);
                return this;
            },

            scrollDown: function () {
                var $content = this.$('.chat-content');
                if ($content.is(':visible')) {
                    $content.scrollTop($content[0].scrollHeight);
                }
                return this;
            }
        });

        this.ContactsPanel = Backbone.View.extend({
            tagName: 'div',
            className: 'controlbox-pane',
            id: 'users',
            events: {
                'click a.toggle-xmpp-contact-form': 'toggleContactForm',
                'submit form.add-xmpp-contact': 'addContactFromForm',
                'submit form.search-xmpp-contact': 'searchContacts',
                'click a.subscribe-to-user': 'addContactFromList'
            },

            initialize: function (cfg) {
                cfg.$parent.append(this.$el);
                this.$tabs = cfg.$parent.parent().find('#controlbox-tabs');
            },

            render: function () {
                var markup;
                var widgets = converse.templates.contacts_panel({
                    label_online: __('Online'),
                    label_busy: __('Busy'),
                    label_away: __('Away'),
                    label_offline: __('Offline'),
                    label_logout: __('Log out'),
                    allow_logout: converse.allow_logout
                });
                this.$tabs.append(converse.templates.contacts_tab({label_contacts: LABEL_CONTACTS}));
                if (converse.xhr_user_search) {
                    markup = converse.templates.search_contact({
                        label_contact_name: __('Contact name'),
                        label_search: __('Search')
                    });
                } else {
                    markup = converse.templates.add_contact_form({
                        label_contact_username: __('Contact username'),
                        label_add: __('Add')
                    });
                }
                if (converse.allow_contact_requests) {
                    widgets += converse.templates.add_contact_dropdown({
                        label_click_to_chat: __('Click to add new chat contacts'),
                        label_add_contact: __('Add a contact')
                    });
                }
                this.$el.html(widgets);
                this.$el.find('.search-xmpp ul').append(markup);
                return this;
            },

            toggleContactForm: function (ev) {
                ev.preventDefault();
                this.$el.find('.search-xmpp').toggle('fast', function () {
                    if ($(this).is(':visible')) {
                        $(this).find('input.username').focus();
                    }
                });
            },

            searchContacts: function (ev) {
                ev.preventDefault();
                $.getJSON(converse.xhr_user_search_url+ "?q=" + $(ev.target).find('input.username').val(), function (data) {
                    var $ul= $('.search-xmpp ul');
                    $ul.find('li.found-user').remove();
                    $ul.find('li.chat-info').remove();
                    if (!data.length) {
                        $ul.append('<li class="chat-info">'+__('No users found')+'</li>');
                    }
                    $(data).each(function (idx, obj) {
                        $ul.append(
                            $('<li class="found-user"></li>')
                            .append(
                                $('<a class="subscribe-to-user" href="#" title="'+__('Click to add as a chat contact')+'"></a>')
                                .attr('data-recipient', Strophe.escapeNode(obj.id)+'@'+converse.domain)
                                .text(obj.fullname)
                            )
                        );
                    });
                });
            },

            addContactFromForm: function (ev) {
                ev.preventDefault();
                var $input = $(ev.target).find('input');
                var jid = $input.val();
                if (! jid) {
                    // this is not a valid JID
                    $input.addClass('error');
                    return;
                }
                this.addContact(jid);
                $('.search-xmpp').hide();
            },

            addContactFromList: function (ev) {
                ev.preventDefault();
                var $target = $(ev.target),
                    jid = $target.attr('data-recipient'),
                    name = $target.text();
                this.addContact(jid, name);
                $target.parent().remove();
                $('.search-xmpp').hide();
            },

            addContact: function (jid, name) {
                name = _.isEmpty(name)? jid: name;
                converse.connection.roster.add(jid, name, [], function (iq) {
                    converse.connection.roster.subscribe(jid, null, converse.xmppstatus.get('fullname'));
                });
            }
        });

        this.RoomsPanel = Backbone.View.extend({
            tagName: 'div',
            className: 'controlbox-pane',
            id: 'chatrooms',
            events: {
                'submit form.add-chatroom': 'createChatRoom',
                'click input#show-rooms': 'showRooms',
                'click a.open-room': 'createChatRoom',
                'click a.room-info': 'showRoomInfo',
                'change input[name=server]': 'setDomain',
                'change input[name=nick]': 'setNick'
            },

            initialize: function (cfg) {
                this.$parent = cfg.$parent;
                this.model.on('change:muc_domain', this.onDomainChange, this);
                this.model.on('change:nick', this.onNickChange, this);
            },

            render: function () {
                this.$parent.append(
                    this.$el.html(
                        converse.templates.room_panel({
                            'server_input_type': converse.hide_muc_server && 'hidden' || 'text',
                            'label_room_name': __('Room name'),
                            'label_nickname': __('Nickname'),
                            'label_server': __('Server'),
                            'label_join': __('Join Room'),
                            'label_show_rooms': __('Show rooms')
                        })
                    ).hide());
                this.$tabs = this.$parent.parent().find('#controlbox-tabs');
                this.$tabs.append(converse.templates.chatrooms_tab({label_rooms: __('Rooms')}));
                return this;
            },

            onDomainChange: function (model) {
                var $server = this.$el.find('input.new-chatroom-server');
                $server.val(model.get('muc_domain'));
                if (converse.auto_list_rooms) {
                    this.updateRoomsList();
                }
            },

            onNickChange: function (model) {
                var $nick = this.$el.find('input.new-chatroom-nick');
                $nick.val(model.get('nick'));
            },

            informNoRoomsFound: function () {
                var $available_chatrooms = this.$el.find('#available-chatrooms');
                // # For translators: %1$s is a variable and will be replaced with the XMPP server name
                $available_chatrooms.html('<dt>'+__('No rooms on %1$s',this.model.get('muc_domain'))+'</dt>');
                $('input#show-rooms').show().siblings('span.spinner').remove();
            },

            onRoomsFound: function (iq) {
                /* Handle the IQ stanza returned from the server, containing
                 * all its public rooms.
                 */
                var name, jid, i, fragment,
                    that = this,
                    $available_chatrooms = this.$el.find('#available-chatrooms');
                this.rooms = $(iq).find('query').find('item');
                if (this.rooms.length) {
                    // # For translators: %1$s is a variable and will be
                    // # replaced with the XMPP server name
                    $available_chatrooms.html('<dt>'+__('Rooms on %1$s',this.model.get('muc_domain'))+'</dt>');
                    fragment = document.createDocumentFragment();
                    for (i=0; i<this.rooms.length; i++) {
                        name = Strophe.unescapeNode($(this.rooms[i]).attr('name')||$(this.rooms[i]).attr('jid'));
                        jid = $(this.rooms[i]).attr('jid');
                        fragment.appendChild($(
                            converse.templates.room_item({
                                'name':name,
                                'jid':jid,
                                'open_title': __('Click to open this room'),
                                'info_title': __('Show more information on this room')
                                })
                            )[0]);
                    }
                    $available_chatrooms.append(fragment);
                    $('input#show-rooms').show().siblings('span.spinner').remove();
                } else {
                    this.informNoRoomsFound();
                }
                return true;
            },

            updateRoomsList: function () {
                /* Send and IQ stanza to the server asking for all rooms
                 */
                converse.connection.sendIQ(
                    $iq({
                        to: this.model.get('muc_domain'),
                        from: converse.connection.jid,
                        type: "get"
                    }).c("query", {xmlns: Strophe.NS.DISCO_ITEMS}),
                    this.onRoomsFound.bind(this),
                    this.informNoRoomsFound.bind(this)
                );
            },

            showRooms: function (ev) {
                var $available_chatrooms = this.$el.find('#available-chatrooms');
                var $server = this.$el.find('input.new-chatroom-server');
                var server = $server.val();
                if (!server) {
                    $server.addClass('error');
                    return;
                }
                this.$el.find('input.new-chatroom-name').removeClass('error');
                $server.removeClass('error');
                $available_chatrooms.empty();
                $('input#show-rooms').hide().after('<span class="spinner"/>');
                this.model.save({muc_domain: server});
                this.updateRoomsList();
            },

            showRoomInfo: function (ev) {
                var target = ev.target,
                    $dd = $(target).parent('dd'),
                    $div = $dd.find('div.room-info');
                if ($div.length) {
                    $div.remove();
                } else {
                    $dd.find('span.spinner').remove();
                    $dd.append('<span class="spinner hor_centered"/>');
                    converse.connection.disco.info(
                        $(target).attr('data-room-jid'),
                        null,
                        $.proxy(function (stanza) {
                            var $stanza = $(stanza);
                            // All MUC features found here: http://xmpp.org/registrar/disco-features.html
                            $dd.find('span.spinner').replaceWith(
                                converse.templates.room_description({
                                    'desc': $stanza.find('field[var="muc#roominfo_description"] value').text(),
                                    'occ': $stanza.find('field[var="muc#roominfo_occupants"] value').text(),
                                    'hidden': $stanza.find('feature[var="muc_hidden"]').length,
                                    'membersonly': $stanza.find('feature[var="muc_membersonly"]').length,
                                    'moderated': $stanza.find('feature[var="muc_moderated"]').length,
                                    'nonanonymous': $stanza.find('feature[var="muc_nonanonymous"]').length,
                                    'open': $stanza.find('feature[var="muc_open"]').length,
                                    'passwordprotected': $stanza.find('feature[var="muc_passwordprotected"]').length,
                                    'persistent': $stanza.find('feature[var="muc_persistent"]').length,
                                    'publicroom': $stanza.find('feature[var="muc_public"]').length,
                                    'semianonymous': $stanza.find('feature[var="muc_semianonymous"]').length,
                                    'temporary': $stanza.find('feature[var="muc_temporary"]').length,
                                    'unmoderated': $stanza.find('feature[var="muc_unmoderated"]').length,
                                    'label_desc': __('Description:'),
                                    'label_occ': __('Occupants:'),
                                    'label_features': __('Features:'),
                                    'label_requires_auth': __('Requires authentication'),
                                    'label_hidden': __('Hidden'),
                                    'label_requires_invite': __('Requires an invitation'),
                                    'label_moderated': __('Moderated'),
                                    'label_non_anon': __('Non-anonymous'),
                                    'label_open_room': __('Open room'),
                                    'label_permanent_room': __('Permanent room'),
                                    'label_public': __('Public'),
                                    'label_semi_anon':  _('Semi-anonymous'),
                                    'label_temp_room':  _('Temporary room'),
                                    'label_unmoderated': __('Unmoderated')
                                }));
                        }, this));
                }
            },

            createChatRoom: function (ev) {
                ev.preventDefault();
                var name, $name,
                    server, $server,
                    jid,
                    $nick = this.$el.find('input.new-chatroom-nick'),
                    nick = $nick.val(),
                    chatroom;

                if (!nick) { $nick.addClass('error'); }
                else { $nick.removeClass('error'); }

                if (ev.type === 'click') {
                    jid = $(ev.target).attr('data-room-jid');
                } else {
                    $name = this.$el.find('input.new-chatroom-name');
                    $server= this.$el.find('input.new-chatroom-server');
                    server = $server.val();
                    name = $name.val().trim().toLowerCase();
                    $name.val(''); // Clear the input
                    if (name && server) {
                        jid = Strophe.escapeNode(name) + '@' + server;
                        $name.removeClass('error');
                        $server.removeClass('error');
                        this.model.save({muc_domain: server});
                    } else {
                        if (!name) { $name.addClass('error'); }
                        if (!server) { $server.addClass('error'); }
                        return;
                    }
                }
                if (!nick) { return; }
                chatroom = converse.chatboxviews.showChat({
                    'id': jid,
                    'jid': jid,
                    'name': Strophe.unescapeNode(Strophe.getNodeFromJid(jid)),
                    'nick': nick,
                    'chatroom': true,
                    'box_id' : b64_sha1(jid)
                });
            },

            setDomain: function (ev) {
                this.model.save({muc_domain: ev.target.value});
            },

            setNick: function (ev) {
                this.model.save({nick: ev.target.value});
            }
        });

        this.ControlBoxView = converse.ChatBoxView.extend({
            tagName: 'div',
            className: 'chatbox',
            id: 'controlbox',
            events: {
                'click a.close-chatbox-button': 'close',
                'click ul#controlbox-tabs li a': 'switchTab',
                'mousedown .dragresize-tm': 'onDragResizeStart'
            },

            initialize: function () {
                this.$el.insertAfter(converse.controlboxtoggle.$el);
                this.model.on('change:connected', this.onConnected, this);
                this.model.on('destroy', this.hide, this);
                this.model.on('hide', this.hide, this);
                this.model.on('show', this.show, this);
                this.model.on('change:closed', this.ensureClosedState, this);
                this.render();
                if (this.model.get('connected')) {
                    this.initRoster();
                }
                if (!this.model.get('closed')) {
                    this.show();
                } else {
                    this.hide();
                }
            },

            giveFeedback: function (message, klass) {
                var $el = this.$('.conn-feedback');
                $el.addClass('conn-feedback').text(message);
                if (klass) {
                    $el.addClass(klass);
                }
            },

            onConnected: function () {
                if (this.model.get('connected')) {
                    this.render().initRoster();
                    converse.features.off('add', this.featureAdded, this);
                    converse.features.on('add', this.featureAdded, this);
                    // Features could have been added before the controlbox was
                    // initialized. Currently we're only interested in MUC
                    var feature = converse.features.findWhere({'var': 'http://jabber.org/protocol/muc'});
                    if (feature) {
                        this.featureAdded(feature);
                    }
                }
            },

            initRoster: function () {
                /* We initialize the roster, which will appear inside the
                 * Contacts Panel.
                 */
                converse.roster = new converse.RosterContacts();
                converse.roster.browserStorage = new Backbone.BrowserStorage[converse.storage](
                    b64_sha1('converse.contacts-'+converse.bare_jid));
                var rostergroups = new converse.RosterGroups();
                rostergroups.browserStorage = new Backbone.BrowserStorage[converse.storage](
                    b64_sha1('converse.roster.groups'+converse.bare_jid));
                converse.rosterview = new converse.RosterView({model: rostergroups});
                this.contactspanel.$el.append(converse.rosterview.$el);
                converse.rosterview.render().fetch().update();
                return this;
            },

            render: function () {
                if (!converse.connection.connected || !converse.connection.authenticated || converse.connection.disconnecting) {
                    // TODO: we might need to take prebinding into consideration here.
                    this.renderLoginPanel();
                } else if (!this.contactspanel || !this.contactspanel.$el.is(':visible')) {
                    this.renderContactsPanel();
                }
                return this;
            },

            renderLoginPanel: function () {
                var $feedback = this.$('.conn-feedback'); // we want to still show any existing feedback.
                this.$el.html(converse.templates.controlbox(this.model.toJSON()));
                var cfg = {'$parent': this.$el.find('.controlbox-panes'), 'model': this};
                if (!this.loginpanel) {
                    this.loginpanel = new converse.LoginPanel(cfg);
                    if (converse.allow_registration) {
                        this.registerpanel = new converse.RegisterPanel(cfg);
                    }
                } else {
                    this.loginpanel.delegateEvents().initialize(cfg);
                    if (converse.allow_registration) {
                        this.registerpanel.delegateEvents().initialize(cfg);
                    }
                }
                this.loginpanel.render();
                if (converse.allow_registration) {
                    this.registerpanel.render().$el.hide();
                }
                this.initDragResize();
                if ($feedback.length) {
                    this.$('.conn-feedback').replaceWith($feedback);
                }
                return this;
            },

            renderContactsPanel: function () {
                var model;
                this.$el.html(converse.templates.controlbox(this.model.toJSON()));
                this.contactspanel = new converse.ContactsPanel({'$parent': this.$el.find('.controlbox-panes')});
                this.contactspanel.render();
                converse.xmppstatusview = new converse.XMPPStatusView({'model': converse.xmppstatus});
                converse.xmppstatusview.render();
                if (converse.allow_muc) {
                    this.roomspanel = new converse.RoomsPanel({
                        '$parent': this.$el.find('.controlbox-panes'),
                        'model': new (Backbone.Model.extend({
                            id: b64_sha1('converse.roomspanel'+converse.bare_jid), // Required by sessionStorage
                            browserStorage: new Backbone.BrowserStorage[converse.storage](
                                b64_sha1('converse.roomspanel'+converse.bare_jid))
                        }))()
                    });
                    this.roomspanel.render().model.fetch();
                    if (!this.roomspanel.model.get('nick')) {
                        this.roomspanel.model.save({nick: Strophe.getNodeFromJid(converse.bare_jid)});
                    }
                }
                this.initDragResize();
            },

            close: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                if (converse.connection.connected) {
                    this.model.save({'closed': true});
                } else {
                    this.model.trigger('hide');
                }
                converse.emit('controlBoxClosed', this);
                return this;
            },

            ensureClosedState: function () {
                if (this.model.get('closed')) {
                    this.hide();
                } else {
                    this.show();
                }
            },

            hide: function (callback) {
                this.$el.hide('fast', function () {
                    converse.refreshWebkit();
                    converse.emit('chatBoxClosed', this);
                    converse.controlboxtoggle.show(function () {
                        if (typeof callback === "function") {
                            callback();
                        }
                    });
                });
                return this;
            },

            show: function () {
                converse.controlboxtoggle.hide($.proxy(function () {
                    this.$el.show('fast', function () {
                        if (converse.rosterview) {
                            converse.rosterview.update();
                        }
                        converse.refreshWebkit();
                    }.bind(this));
                    converse.emit('controlBoxOpened', this);
                }, this));
                return this;
            },

            featureAdded: function (feature) {
                if ((feature.get('var') == 'http://jabber.org/protocol/muc') && (converse.allow_muc)) {
                    this.roomspanel.model.save({muc_domain: feature.get('from')});
                    var $server= this.$el.find('input.new-chatroom-server');
                    if (! $server.is(':focus')) {
                        $server.val(this.roomspanel.model.get('muc_domain'));
                    }
                }
            },

            switchTab: function (ev) {
                // TODO: automatically focus the relevant input
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var $tab = $(ev.target),
                    $sibling = $tab.parent().siblings('li').children('a'),
                    $tab_panel = $($tab.attr('href'));
                $($sibling.attr('href')).hide();
                $sibling.removeClass('current');
                $tab.addClass('current');
                $tab_panel.show();
                return this;
            },

            showHelpMessages: function (msgs) {
                // Override showHelpMessages in ChatBoxView, for now do nothing.
                return;
            }
        });

        this.ChatRoomOccupant = Backbone.Model;
        this.ChatRoomOccupantView = Backbone.View.extend({
            tagName: 'li',
            initialize: function () {
                this.model.on('add', this.render, this);
                this.model.on('change', this.render, this);
                this.model.on('destroy', this.destroy, this);
            },
            render: function () {
                var $new = converse.templates.occupant(
                    _.extend(
                        this.model.toJSON(), {
                            'desc_moderator': __('This user is a moderator'),
                            'desc_participant': __('This user can send messages in this room'),
                            'desc_visitor': __('This user can NOT send messages in this room')
                    })
                );
                this.$el.replaceWith($new);
                this.setElement($new, true);
                return this;
            },

            destroy: function () {
                this.$el.remove();
            }
        });

        this.ChatRoomOccupants = Backbone.Collection.extend({
            model: converse.ChatRoomOccupant,
            initialize: function (options) {
                this.browserStorage = new Backbone.BrowserStorage[converse.storage](
                    b64_sha1('converse.occupants'+converse.bare_jid+options.nick));
            }
        });

        this.ChatRoomOccupantsView = Backbone.Overview.extend({
            tagName: 'div',
            className: 'participants',

            initialize: function () {
                this.model.on("add", this.onOccupantAdded, this);
            },

            render: function () {
                this.$el.html(
                    converse.templates.chatroom_sidebar({
                        'label_invitation': __('Invite...'),
                        'label_occupants': __('Occupants')
                    })
                );
                return this.initInviteWidget();
            },

            onOccupantAdded: function (item) {
                var view = this.get(item.get('id'));
                if (!view) {
                    view = this.add(item.get('id'), new converse.ChatRoomOccupantView({model: item}));
                } else {
                    delete view.model; // Remove ref to old model to help garbage collection
                    view.model = item;
                    view.initialize();
                }
                this.$('.participant-list').append(view.render().$el);
            },

            parsePresence: function (pres) {
                var id = Strophe.getResourceFromJid(pres.getAttribute("from"));
                var data = {
                    id: id,
                    nick: id,
                    type: pres.getAttribute("type"),
                    states: []
                };
                _.each(pres.childNodes, function (child) {
                    switch (child.nodeName) {
                        case "status":
                            data.status = child.textContent || null;
                            break;
                        case "show":
                            data.show = child.textContent || null;
                            break;
                        case "x":
                            if (child.getAttribute("xmlns") === Strophe.NS.MUC_USER) {
                                _.each(child.childNodes, function (item) {
                                    switch (item.nodeName) {
                                        case "item":
                                            data.affiliation = item.getAttribute("affiliation");
                                            data.role = item.getAttribute("role");
                                            data.jid = item.getAttribute("jid");
                                            data.nick = item.getAttribute("nick") || data.nick;
                                            break;
                                        case "status":
                                            if (item.getAttribute("code")) {
                                                data.states.push(item.getAttribute("code"));
                                            }
                                    }
                                });
                            }
                    }
                });
                return data;
            },

            updateOccupantsOnPresence: function (pres) {
                var occupant;
                var data = this.parsePresence(pres);
                switch (data.type) {
                    case 'error':
                        return true;
                    case 'unavailable':
                        occupant = this.model.get(data.id);
                        if (occupant) { occupant.destroy(); }
                        break;
                    default:
                        occupant = this.model.get(data.id);
                        if (occupant) {
                            occupant.save(data);
                        } else {
                            this.model.create(data);
                        }
                }
            },

            initInviteWidget: function () {
                var $el = this.$('input.invited-contact');
                $el.typeahead({
                    minLength: 1,
                    highlight: true
                }, {
                    name: 'contacts-dataset',
                    source: function (q, cb) {
                        var results = [];
                        _.each(converse.roster.filter(contains(['fullname', 'jid'], q)), function (n) {
                            results.push({value: n.get('fullname'), jid: n.get('jid')});
                        });
                        cb(results);
                    },
                    templates: {
                        suggestion: _.template('<p data-jid="{{jid}}">{{value}}</p>')
                    }
                });
                $el.on('typeahead:selected', $.proxy(function (ev, suggestion, dname) {
                    var reason = prompt(
                        __(___('You are about to invite %1$s to the chat room "%2$s". '), suggestion.value, this.model.get('id')) +
                        __("You may optionally include a message, explaining the reason for the invitation.")
                    );
                    if (reason !== null) {
                        this.chatroomview.directInvite(suggestion.jid, reason);
                    }
                    $(ev.target).typeahead('val', '');
                }, this));
                return this;
            }

        });

        this.ChatRoomView = converse.ChatBoxView.extend({
            length: 300,
            tagName: 'div',
            className: 'chatroom',
            events: {
                'click .close-chatbox-button': 'close',
                'click .toggle-chatbox-button': 'minimize',
                'click .configure-chatroom-button': 'configureChatRoom',
                'click .toggle-smiley': 'toggleEmoticonMenu',
                'click .toggle-smiley ul li': 'insertEmoticon',
                'click .toggle-clear': 'clearChatRoomMessages',
                'click .toggle-participants a': 'toggleOccupants',
                'keypress textarea.chat-textarea': 'keyPressed',
                'mousedown .dragresize-tm': 'onDragResizeStart'
            },
            is_chatroom: true,

            initialize: function () {
                this.model.messages.on('add', this.onMessageAdded, this);
                this.model.on('change:minimized', function (item) {
                    if (item.get('minimized')) {
                        this.hide();
                    } else {
                        this.maximize();
                    }
                }, this);
                this.model.on('destroy', function (model, response, options) {
                    this.hide().leave();
                },
                this);

                this.occupantsview = new converse.ChatRoomOccupantsView({
                    model: new converse.ChatRoomOccupants({nick: this.model.get('nick')})
                });
                this.occupantsview.chatroomview = this;
                this.render();
                this.occupantsview.model.fetch({add:true});
                this.join(null);
                converse.emit('chatRoomOpened', this);

                this.$el.insertAfter(converse.chatboxviews.get("controlbox").$el);
                this.model.messages.fetch({add: true});
                if (this.model.get('minimized')) {
                    this.hide();
                } else {
                    this.show();
                }
            },

            render: function () {
                this.$el.attr('id', this.model.get('box_id'))
                        .html(converse.templates.chatroom(this.model.toJSON()));
                this.renderChatArea();
                setTimeout(function () {
                    converse.refreshWebkit();
                }, 50);
                return this;
            },

            renderChatArea: function () {
                if (!this.$('.chat-area').length) {
                    this.$('.chat-body').empty()
                        .append(
                            converse.templates.chatarea({
                                'show_toolbar': converse.show_toolbar,
                                'label_message': __('Message')
                            }))
                        .append(this.occupantsview.render().$el);
                    this.renderToolbar();
                }
                // XXX: This is a bit of a hack, to make sure that the
                // sidebar's state is remembered.
                this.model.set({hidden_occupants: !this.model.get('hidden_occupants')});
                this.toggleOccupants();
                return this;
            },

            toggleOccupants: function (ev) {
                if (ev) {
                    ev.preventDefault();
                    ev.stopPropagation();
                }
                var $el = this.$('.icon-hide-users');
                if (!this.model.get('hidden_occupants')) {
                    this.model.save({hidden_occupants: true});
                    $el.removeClass('icon-hide-users').addClass('icon-show-users');
                    this.$('form.sendXMPPMessage, .chat-area').animate({width: '100%'});
                    this.$('div.participants').animate({width: 0}, $.proxy(function () {
                        this.scrollDown();
                    }, this));
                } else {
                    this.model.save({hidden_occupants: false});
                    $el.removeClass('icon-show-users').addClass('icon-hide-users');
                    this.$('.chat-area, form.sendXMPPMessage').css({width: ''});
                    this.$('div.participants').show().animate({width: 'auto'}, $.proxy(function () {
                        this.scrollDown();
                    }, this));
                }
            },

            directInvite: function (receiver, reason) {
                var attrs = {
                    xmlns: 'jabber:x:conference',
                    jid: this.model.get('jid')
                };
                if (reason !== null) { attrs.reason = reason; }
                if (this.model.get('password')) { attrs.password = this.model.get('password'); }
                var invitation = $msg({
                    from: converse.connection.jid,
                    to: receiver,
                    id: converse.connection.getUniqueId()
                }).c('x', attrs);
                converse.connection.send(invitation);
                converse.emit('roomInviteSent', this, receiver, reason);
            },

            onCommandError: function (stanza) {
                this.showStatusNotification(__("Error: could not execute the command"), true);
            },

            createChatRoomMessage: function (text) {
                var msgid = converse.connection.getUniqueId();
                var msg = $msg({
                    to: this.model.get('jid'),
                    from: converse.connection.jid,
                    type: 'groupchat',
                    id: msgid
                }).c("body").t(text).up()
                  .c("x", {xmlns: "jabber:x:event"}).c("composing");
                converse.connection.send(msg);

                var fullname = converse.xmppstatus.get('fullname');
                this.model.messages.create({
                    fullname: _.isEmpty(fullname)? converse.bare_jid: fullname,
                    sender: 'me',
                    time: moment().format(),
                    message: text,
                    msgid: msgid
                });
            },

            setAffiliation: function(room, jid, affiliation, reason, onSuccess, onError) {
                var item = $build("item", {jid: jid, affiliation: affiliation});
                var iq = $iq({to: room, type: "set"}).c("query", {xmlns: Strophe.NS.MUC_ADMIN}).cnode(item.node);
                if (reason !== null) { iq.c("reason", reason); }
                return converse.connection.sendIQ(iq.tree(), onSuccess, onError);
            },

            modifyRole: function(room, nick, role, reason, onSuccess, onError) {
                var item = $build("item", {nick: nick, role: role});
                var iq = $iq({to: room, type: "set"}).c("query", {xmlns: Strophe.NS.MUC_ADMIN}).cnode(item.node);
                if (reason !== null) { iq.c("reason", reason); }
                return converse.connection.sendIQ(iq.tree(), onSuccess, onError);
            },

            member: function(room, jid, reason, handler_cb, error_cb) {
                return this.setAffiliation(room, jid, 'member', reason, handler_cb, error_cb);
            },
            revoke: function(room, jid, reason, handler_cb, error_cb) {
                return this.setAffiliation(room, jid, 'none', reason, handler_cb, error_cb);
            },
            owner: function(room, jid, reason, handler_cb, error_cb) {
                return this.setAffiliation(room, jid, 'owner', reason, handler_cb, error_cb);
            },
            admin: function(room, jid, reason, handler_cb, error_cb) {
                return this.setAffiliation(room, jid, 'admin', reason, handler_cb, error_cb);
            },

            sendChatRoomMessage: function (text) {
                var match = text.replace(/^\s*/, "").match(/^\/(.*?)(?: (.*))?$/) || [false, '', ''];
                var args = match[2].splitOnce(' ');
                switch (match[1]) {
                    case 'admin':
                        this.setAffiliation(
                                this.model.get('jid'), args[0], 'admin', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    case 'ban':
                        this.setAffiliation(
                                this.model.get('jid'), args[0], 'outcast', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    case 'clear':
                        this.clearChatRoomMessages();
                        break;
                    case 'deop':
                        this.modifyRole(
                                this.model.get('jid'), args[0], 'participant', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    case 'help':
                        this.showHelpMessages([
                            '<strong>/admin</strong>: ' +__("Change user's affiliation to admin"),
                            '<strong>/ban</strong>: '   +__('Ban user from room'),
                            '<strong>/clear</strong>: ' +__('Remove messages'),
                            '<strong>/deop</strong>: '  +__('Change user role to participant'),
                            '<strong>/help</strong>: '  +__('Show this menu'),
                            '<strong>/kick</strong>: '  +__('Kick user from room'),
                            '<strong>/me</strong>: '    +__('Write in 3rd person'),
                            '<strong>/member</strong>: '+__('Grant membership to a user'),
                            '<strong>/mute</strong>: '  +__("Remove user's ability to post messages"),
                            '<strong>/nick</strong>: '  +__('Change your nickname'),
                            '<strong>/op</strong>: '    +__('Grant moderator role to user'),
                            '<strong>/owner</strong>: ' +__('Grant ownership of this room'),
                            '<strong>/revoke</strong>: '+__("Revoke user's membership"),
                            '<strong>/topic</strong>: ' +__('Set room topic'),
                            '<strong>/voice</strong>: ' +__('Allow muted user to post messages')
                        ]);
                        break;
                    case 'kick':
                        this.modifyRole(
                                this.model.get('jid'), args[0], 'none', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    case 'mute':
                        this.modifyRole(
                                this.model.get('jid'), args[0], 'visitor', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    case 'member':
                        this.setAffiliation(
                                this.model.get('jid'), args[0], 'member', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    case 'nick':
                        converse.connection.send($pres({
                            from: converse.connection.jid,
                            to: this.getRoomJIDAndNick(match[2]),
                            id: converse.connection.getUniqueId()
                        }).tree());
                        break;
                    case 'owner':
                        this.setAffiliation(
                                this.model.get('jid'), args[0], 'owner', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    case 'op':
                        this.modifyRole(
                                this.model.get('jid'), args[0], 'moderator', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    case 'revoke':
                        this.setAffiliation(
                                this.model.get('jid'), args[0], 'none', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    case 'topic':
                        converse.connection.send(
                            $msg({
                                to: this.model.get('jid'),
                                from: converse.connection.jid,
                                type: "groupchat"
                            }).c("subject", {xmlns: "jabber:client"}).t(match[2]).tree()
                        );
                        break;
                    case 'voice':
                        this.modifyRole(
                                this.model.get('jid'), args[0], 'participant', args[1],
                                undefined, $.proxy(this.onCommandError, this));
                        break;
                    default:
                        this.createChatRoomMessage(text);
                    break;
                }
            },

            handleMUCStanza: function (stanza) {
                var xmlns, xquery, i;
                var from = stanza.getAttribute('from');
                if (!from || (this.model.get('id') !== from.split("/")[0])) {
                    return true;
                }
                if (stanza.nodeName === "message") {
                    this.onChatRoomMessage(stanza);
                } else if (stanza.nodeName === "presence") {
                    xquery = stanza.getElementsByTagName("x");
                    if (xquery.length > 0) {
                        for (i = 0; i < xquery.length; i++) {
                            xmlns = xquery[i].getAttribute("xmlns");
                            if (xmlns && xmlns.match(Strophe.NS.MUC)) {
                                this.onChatRoomPresence(stanza);
                                break;
                            }
                        }
                    }
                }
                return true;
            },

            getRoomJIDAndNick: function (nick) {
                nick = nick || this.model.get('nick');
                var room = this.model.get('jid');
                var node = Strophe.escapeNode(Strophe.getNodeFromJid(room));
                var domain = Strophe.getDomainFromJid(room);
                return node + "@" + domain + (nick !== null ? "/" + nick : "");
            },

            join: function (password, history_attrs, extended_presence) {
                var msg = $pres({
                    from: converse.connection.jid,
                    to: this.getRoomJIDAndNick()
                }).c("x", {
                    xmlns: Strophe.NS.MUC
                });
                if (typeof history_attrs === "object" && history_attrs.length) {
                    msg = msg.c("history", history_attrs).up();
                }
                if (password) {
                    msg.cnode(Strophe.xmlElement("password", [], password));
                }
                if (typeof extended_presence !== "undefined" && extended_presence !== null) {
                    msg.up.cnode(extended_presence);
                }
                if (!this.handler) {
                    this.handler = converse.connection.addHandler($.proxy(this.handleMUCStanza, this));
                }
                this.model.set('connection_status', Strophe.Status.CONNECTING);
                return converse.connection.send(msg);
            },

            leave: function(exit_msg) {
                var presenceid = converse.connection.getUniqueId();
                var presence = $pres({
                    type: "unavailable",
                    id: presenceid,
                    from: converse.connection.jid,
                    to: this.getRoomJIDAndNick()
                });
                if (exit_msg !== null) {
                    presence.c("status", exit_msg);
                }
                converse.connection.addHandler(
                    $.proxy(function () { this.model.set('connection_status', Strophe.Status.DISCONNECTED); }, this),
                    null, "presence", null, presenceid);
                converse.connection.send(presence);
            },

            renderConfigurationForm: function (stanza) {
                var $form= this.$el.find('form.chatroom-form'),
                    $stanza = $(stanza),
                    $fields = $stanza.find('field'),
                    title = $stanza.find('title').text(),
                    instructions = $stanza.find('instructions').text();
                $form.find('span.spinner').remove();
                $form.append($('<legend>').text(title));
                if (instructions && instructions != title) {
                    $form.append($('<p class="instructions">').text(instructions));
                }
                _.each($fields, function (field) {
                    $form.append(utils.xForm2webForm($(field), $stanza));
                });
                $form.append('<input type="submit" class="save-submit" value="'+__('Save')+'"/>');
                $form.append('<input type="button" class="cancel-submit" value="'+__('Cancel')+'"/>');
                $form.on('submit', this.saveConfiguration.bind(this));
                $form.find('input[type=button]').on('click', $.proxy(this.cancelConfiguration, this));
            },

            sendConfiguration: function(config, onSuccess, onError) {
                // Send an IQ stanza with the room configuration.
                var iq = $iq({to: this.model.get('jid'), type: "set"})
                    .c("query", {xmlns: Strophe.NS.MUC_OWNER})
                    .c("x", {xmlns: "jabber:x:data", type: "submit"});
                _.each(config, function (node) { iq.cnode(node).up(); });
                return converse.connection.sendIQ(iq.tree(), onSuccess, onError);
            },

            saveConfiguration: function (ev) {
                ev.preventDefault();
                var that = this;
                var $inputs = $(ev.target).find(':input:not([type=button]):not([type=submit])'),
                    count = $inputs.length,
                    configArray = [];
                $inputs.each(function () {
                    configArray.push(utils.webForm2xForm(this));
                    if (!--count) {
                        that.sendConfiguration(
                            configArray,
                            $.proxy(that.onConfigSaved, that),
                            $.proxy(that.onErrorConfigSaved, that)
                        );
                    }
                });
                this.$el.find('div.chatroom-form-container').hide(
                    function () {
                        $(this).remove();
                        that.$el.find('.chat-area').show();
                        that.$el.find('.participants').show();
                    });
            },

            onConfigSaved: function (stanza) {
                // TODO: provide feedback
            },

            onErrorConfigSaved: function (stanza) {
                this.showStatusNotification(__("An error occurred while trying to save the form."));
            },

            cancelConfiguration: function (ev) {
                ev.preventDefault();
                var that = this;
                this.$el.find('div.chatroom-form-container').hide(
                    function () {
                        $(this).remove();
                        that.$el.find('.chat-area').show();
                        that.$el.find('.participants').show();
                    });
            },

            configureChatRoom: function (ev) {
                ev.preventDefault();
                if (this.$el.find('div.chatroom-form-container').length) {
                    return;
                }
                this.$('.chat-body').children().hide();
                this.$('.chat-body').append(
                    $('<div class="chatroom-form-container">'+
                        '<form class="chatroom-form">'+
                        '<span class="spinner centered"/>'+
                        '</form>'+
                    '</div>'));
                converse.connection.sendIQ(
                        $iq({
                            to: this.model.get('jid'),
                            type: "get"
                        }).c("query", {xmlns: Strophe.NS.MUC_OWNER}).tree(),
                        this.renderConfigurationForm.bind(this)
                );
            },

            submitPassword: function (ev) {
                ev.preventDefault();
                var password = this.$el.find('.chatroom-form').find('input[type=password]').val();
                this.$el.find('.chatroom-form-container').replaceWith('<span class="spinner centered"/>');
                this.join(password);
            },

            renderPasswordForm: function () {
                this.$('.chat-body').children().hide();
                this.$('span.centered.spinner').remove();
                this.$('.chat-body').append(
                    converse.templates.chatroom_password_form({
                        heading: __('This chatroom requires a password'),
                        label_password: __('Password: '),
                        label_submit: __('Submit')
                    }));
                this.$('.chatroom-form').on('submit', $.proxy(this.submitPassword, this));
            },

            showDisconnectMessage: function (msg) {
                this.$('.chat-area').hide();
                this.$('.participants').hide();
                this.$('span.centered.spinner').remove();
                this.$('.chat-body').append($('<p>'+msg+'</p>'));
            },

            /* http://xmpp.org/extensions/xep-0045.html
             * ----------------------------------------
             * 100 message      Entering a room         Inform user that any occupant is allowed to see the user's full JID
             * 101 message (out of band)                Affiliation change  Inform user that his or her affiliation changed while not in the room
             * 102 message      Configuration change    Inform occupants that room now shows unavailable members
             * 103 message      Configuration change    Inform occupants that room now does not show unavailable members
             * 104 message      Configuration change    Inform occupants that a non-privacy-related room configuration change has occurred
             * 110 presence     Any room presence       Inform user that presence refers to one of its own room occupants
             * 170 message or initial presence          Configuration change    Inform occupants that room logging is now enabled
             * 171 message      Configuration change    Inform occupants that room logging is now disabled
             * 172 message      Configuration change    Inform occupants that the room is now non-anonymous
             * 173 message      Configuration change    Inform occupants that the room is now semi-anonymous
             * 174 message      Configuration change    Inform occupants that the room is now fully-anonymous
             * 201 presence     Entering a room         Inform user that a new room has been created
             * 210 presence     Entering a room         Inform user that the service has assigned or modified the occupant's roomnick
             * 301 presence     Removal from room       Inform user that he or she has been banned from the room
             * 303 presence     Exiting a room          Inform all occupants of new room nickname
             * 307 presence     Removal from room       Inform user that he or she has been kicked from the room
             * 321 presence     Removal from room       Inform user that he or she is being removed from the room because of an affiliation change
             * 322 presence     Removal from room       Inform user that he or she is being removed from the room because the room has been changed to members-only and the user is not a member
             * 332 presence     Removal from room       Inform user that he or she is being removed from the room because of a system shutdown
             */
            infoMessages: {
                100: __('This room is not anonymous'),
                102: __('This room now shows unavailable members'),
                103: __('This room does not show unavailable members'),
                104: __('Non-privacy-related room configuration has changed'),
                170: __('Room logging is now enabled'),
                171: __('Room logging is now disabled'),
                172: __('This room is now non-anonymous'),
                173: __('This room is now semi-anonymous'),
                174: __('This room is now fully-anonymous'),
                201: __('A new room has been created')
            },

            disconnectMessages: {
                301: __('You have been banned from this room'),
                307: __('You have been kicked from this room'),
                321: __("You have been removed from this room because of an affiliation change"),
                322: __("You have been removed from this room because the room has changed to members-only and you're not a member"),
                332: __("You have been removed from this room because the MUC (Multi-user chat) service is being shut down.")
            },

            actionInfoMessages: {
                /* XXX: Note the triple underscore function and not double
                 * underscore.
                 *
                 * This is a hack. We can't pass the strings to __ because we
                 * don't yet know what the variable to interpolate is.
                 *
                 * Triple underscore will just return the string again, but we
                 * can then at least tell gettext to scan for it so that these
                 * strings are picked up by the translation machinery.
                 */
                301: ___("<strong>%1$s</strong> has been banned"),
                303: ___("<strong>%1$s</strong>'s nickname has changed"),
                307: ___("<strong>%1$s</strong> has been kicked out"),
                321: ___("<strong>%1$s</strong> has been removed because of an affiliation change"),
                322: ___("<strong>%1$s</strong> has been removed for not being a member")
            },

            newNicknameMessages: {
                210: ___('Your nickname has been automatically changed to: <strong>%1$s</strong>'),
                303: ___('Your nickname has been changed to: <strong>%1$s</strong>')
            },

            showStatusMessages: function ($el, is_self) {
                /* Check for status codes and communicate their purpose to the user.
                 * Allow user to configure chat room if they are the owner.
                 * See: http://xmpp.org/registrar/mucstatus.html
                 */
                var $chat_content,
                    disconnect_msgs = [],
                    msgs = [],
                    reasons = [];
                $el.find('x[xmlns="'+Strophe.NS.MUC_USER+'"]').each($.proxy(function (idx, x) {
                    var $item = $(x).find('item');
                    if (Strophe.getBareJidFromJid($item.attr('jid')) === converse.bare_jid && $item.attr('affiliation') === 'owner') {
                        this.$el.find('a.configure-chatroom-button').show();
                    }
                    $(x).find('item reason').each(function (idx, reason) {
                        if ($(reason).text()) {
                            reasons.push($(reason).text());
                        }
                    });
                    $(x).find('status').each($.proxy(function (idx, stat) {
                        var code = stat.getAttribute('code');
                        var from_nick = Strophe.unescapeNode(Strophe.getResourceFromJid($el.attr('from')));
                        if (is_self && code === "210") {
                            msgs.push(__(this.newNicknameMessages[code], from_nick));
                        } else if (is_self && code === "303") {
                            msgs.push(__(this.newNicknameMessages[code], $item.attr('nick')));
                        } else if (is_self && _.contains(_.keys(this.disconnectMessages), code)) {
                            disconnect_msgs.push(this.disconnectMessages[code]);
                        } else if (!is_self && _.contains(_.keys(this.actionInfoMessages), code)) {
                            msgs.push(__(this.actionInfoMessages[code], from_nick));
                        } else if (_.contains(_.keys(this.infoMessages), code)) {
                            msgs.push(this.infoMessages[code]);
                        } else if (code !== '110') {
                            if ($(stat).text()) {
                                msgs.push($(stat).text()); // Sometimes the status contains human readable text and not a code.
                            }
                        }
                    }, this));
                }, this));

                if (disconnect_msgs.length > 0) {
                    for (i=0; i<disconnect_msgs.length; i++) {
                        this.showDisconnectMessage(disconnect_msgs[i]);
                    }
                    for (i=0; i<reasons.length; i++) {
                        this.showDisconnectMessage(__('The reason given is: "'+reasons[i]+'"'), true);
                    }
                    this.model.set('connection_status', Strophe.Status.DISCONNECTED);
                    return;
                }
                $chat_content = this.$el.find('.chat-content');
                for (i=0; i<msgs.length; i++) {
                    $chat_content.append(converse.templates.info({message: msgs[i]}));
                }
                for (i=0; i<reasons.length; i++) {
                    this.showStatusNotification(__('The reason given is: "'+reasons[i]+'"'), true);
                }
                return this.scrollDown();
            },

            showErrorMessage: function ($error) {
                // We didn't enter the room, so we must remove it from the MUC
                // add-on
                if ($error.attr('type') == 'auth') {
                    if ($error.find('not-authorized').length) {
                        this.renderPasswordForm();
                    } else if ($error.find('registration-required').length) {
                        this.showDisconnectMessage(__('You are not on the member list of this room'));
                    } else if ($error.find('forbidden').length) {
                        this.showDisconnectMessage(__('You have been banned from this room'));
                    }
                } else if ($error.attr('type') == 'modify') {
                    if ($error.find('jid-malformed').length) {
                        this.showDisconnectMessage(__('No nickname was specified'));
                    }
                } else if ($error.attr('type') == 'cancel') {
                    if ($error.find('not-allowed').length) {
                        this.showDisconnectMessage(__('You are not allowed to create new rooms'));
                    } else if ($error.find('not-acceptable').length) {
                        this.showDisconnectMessage(__("Your nickname doesn't conform to this room's policies"));
                    } else if ($error.find('conflict').length) {
                        // TODO: give user the option of choosing a different
                        // nickname
                        this.showDisconnectMessage(__("Your nickname is already taken"));
                    } else if ($error.find('item-not-found').length) {
                        this.showDisconnectMessage(__("This room does not (yet) exist"));
                    } else if ($error.find('service-unavailable').length) {
                        this.showDisconnectMessage(__("This room has reached it's maximum number of occupants"));
                    }
                }
            },

            onChatRoomPresence: function (pres) {
                var $presence = $(pres), is_self;
                var nick = this.model.get('nick');
                if ($presence.attr('type') === 'error') {
                    this.model.set('connection_status', Strophe.Status.DISCONNECTED);
                    this.showErrorMessage($presence.find('error'));
                } else {
                    is_self = ($presence.find("status[code='110']").length) ||
                        ($presence.attr('from') == this.model.get('id')+'/'+Strophe.escapeNode(nick));
                    if (this.model.get('connection_status') !== Strophe.Status.CONNECTED) {
                        this.model.set('connection_status', Strophe.Status.CONNECTED);
                        this.$('span.centered.spinner').remove();
                        this.$el.find('.chat-body').children().show();
                    }
                    this.showStatusMessages($presence, is_self);
                }
                this.occupantsview.updateOccupantsOnPresence(pres);
            },

            onChatRoomMessage: function (message) {
                var $message = $(message),
                    body = $message.children('body').text(),
                    jid = $message.attr('from'),
                    msgid = $message.attr('id'),
                    resource = Strophe.getResourceFromJid(jid),
                    sender = resource && Strophe.unescapeNode(resource) || '',
                    delayed = $message.find('delay').length > 0,
                    subject = $message.children('subject').text();

                if (msgid && this.model.messages.findWhere({msgid: msgid})) {
                    return true; // We already have this message stored.
                }
                this.showStatusMessages($message);
                if (subject) {
                    this.$el.find('.chatroom-topic').text(subject).attr('title', subject);
                    // # For translators: the %1$s and %2$s parts will get replaced by the user and topic text respectively
                    // # Example: Topic set by JC Brand to: Hello World!
                    this.$el.find('.chat-content').append(
                        converse.templates.info({
                            'message': __('Topic set by %1$s to: %2$s', sender, subject)
                        }));
                }
                if (sender === '') {
                    return true;
                }
                this.model.createMessage($message);
                if (!delayed && sender !== this.model.get('nick') && (new RegExp("\\b"+this.model.get('nick')+"\\b")).test(body)) {
                    playNotification();
                }
                if (sender !== this.model.get('nick')) {
                    // We only emit an event if it's not our own message
                    converse.emit('message', message);
                }
                return true;
            }
        });

        this.ChatBoxes = Backbone.Collection.extend({
            model: converse.ChatBox,
            comparator: 'time_opened',

            registerMessageHandler: function () {
                converse.connection.addHandler(
                    $.proxy(function (message) {
                        this.onMessage(message);
                        return true;
                    }, this), null, 'message', 'chat');

                converse.connection.addHandler(
                    $.proxy(function (message) {
                        this.onInvite(message);
                        return true;
                    }, this), 'jabber:x:conference', 'message');
            },

            onConnected: function () {
                this.browserStorage = new Backbone.BrowserStorage[converse.storage](
                    b64_sha1('converse.chatboxes-'+converse.bare_jid));
                this.registerMessageHandler();
                this.fetch({
                    add: true,
                    success: $.proxy(function (collection, resp) {
                        if (!_.include(_.pluck(resp, 'id'), 'controlbox')) {
                            this.add({
                                id: 'controlbox',
                                box_id: 'controlbox'
                            });
                        }
                        this.get('controlbox').save({connected:true});
                    }, this)
                });
            },

            isOnlyChatStateNotification: function ($msg) {
                // See XEP-0085 Chat State Notification
                return (
                    $msg.find('body').length === 0 && (
                        $msg.find(ACTIVE).length !== 0 ||
                        $msg.find(COMPOSING).length !== 0 ||
                        $msg.find(INACTIVE).length !== 0 ||
                        $msg.find(PAUSED).length !== 0 ||
                        $msg.find(GONE).length !== 0
                    )
                );
            },

            onInvite: function (message) {
                var $message = $(message),
                    $x = $message.children('x[xmlns="jabber:x:conference"]'),
                    from = Strophe.getBareJidFromJid($message.attr('from')),
                    room_jid = $x.attr('jid'),
                    reason = $x.attr('reason'),
                    contact = converse.roster.get(from),
                    result;

                if (!reason) {
                    result = confirm(
                        __(___("%1$s has invited you to join a chat room: %2$s"), contact.get('fullname'), room_jid)
                    );
                } else {
                    result = confirm(
                         __(___('%1$s has invited you to join a chat room: %2$s, and left the following reason: "%3$s"'),
                                contact.get('fullname'), room_jid, reason)
                    );
                }
                if (result === true) {
                    var chatroom = converse.chatboxviews.showChat({
                        'id': room_jid,
                        'jid': room_jid,
                        'name': Strophe.unescapeNode(Strophe.getNodeFromJid(room_jid)),
                        'nick': Strophe.unescapeNode(Strophe.getNodeFromJid(converse.connection.jid)),
                        'chatroom': true,
                        'box_id' : b64_sha1(room_jid),
                        'password': $x.attr('password')
                    });
                    if (!_.contains(
                                [Strophe.Status.CONNECTING, Strophe.Status.CONNECTED],
                                chatroom.get('connection_status'))
                            ) {
                        converse.chatboxviews.get(room_jid).join(null);
                    }
                }
            },

            onMessage: function (message) {
                var $message = $(message);
                var contact_jid, $forwarded, $received, $sent,
                    msgid = $message.attr('id'),
                    chatbox, resource, roster_item,
                    message_from = $message.attr('from');
                if (message_from === converse.connection.jid) {
                    // FIXME: Forwarded messages should be sent to specific resources,
                    // not broadcasted
                    return true;
                }
                $forwarded = $message.children('forwarded');
                $received = $message.children('received[xmlns="urn:xmpp:carbons:2"]');
                $sent = $message.children('sent[xmlns="urn:xmpp:carbons:2"]');

                if ($forwarded.length) {
                    $message = $forwarded.children('message');
                } else if ($received.length) {
                    $message = $received.children('forwarded').children('message');
                    message_from = $message.attr('from');
                } else if ($sent.length) {
                    $message = $sent.children('forwarded').children('message');
                    message_from = $message.attr('from');
                }

                var from = Strophe.getBareJidFromJid(message_from),
                    to = Strophe.getBareJidFromJid($message.attr('to'));
                if (from == converse.bare_jid) {
                    // I am the sender, so this must be a forwarded message...
                    contact_jid = to;
                    resource = Strophe.getResourceFromJid($message.attr('to'));
                } else {
                    contact_jid = from; // XXX: Should we add toLowerCase here? See ticket #234
                    resource = Strophe.getResourceFromJid(message_from);
                }

                roster_item = converse.roster.get(contact_jid);
                if (roster_item === undefined) {
                    // The contact was likely removed
                    converse.log('Could not get roster item for JID '+contact_jid, 'error');
                    return true;
                }

                chatbox = this.get(contact_jid);
                if (!chatbox) {
                    /* FIXME: there is a bug here. If chat state notifications
                     * (because a roster contact closed a chat box of yours
                     * they had open) are received and we don't have a chat with
                     * the user, then a chat box is created here which then
                     * opens automatically :(
                     */
                    var fullname = roster_item.get('fullname');
                    fullname = _.isEmpty(fullname)? contact_jid: fullname;
                    chatbox = this.create({
                        'id': contact_jid,
                        'jid': contact_jid,
                        'fullname': fullname,
                        'image_type': roster_item.get('image_type'),
                        'image': roster_item.get('image'),
                        'url': roster_item.get('url')
                    });
                }
                if (msgid && chatbox.messages.findWhere({msgid: msgid})) {
                    // FIXME: There's still a bug here..
                    // If a duplicate message is received just after the chat
                    // box was closed, then it'll open again (due to it being
                    // created here above), with now new messages.
                    // The solution is mostly likely to not let chat boxes show
                    // automatically when they are created, but to require
                    // "show" to be called explicitly.
                    return true; // We already have this message stored.
                }
                if (!this.isOnlyChatStateNotification($message) && from !== converse.bare_jid) {
                    playNotification();
                }
                chatbox.receiveMessage($message);
                converse.roster.addResource(contact_jid, resource);
                converse.emit('message', message);
                return true;
            }
        });

        this.ChatBoxViews = Backbone.Overview.extend({

            initialize: function () {
                this.model.on("add", this.onChatBoxAdded, this);
                this.model.on("change:minimized", function (item) {
                    if (item.get('minimized') === false) {
                         this.trimChats(this.get(item.get('id')));
                    } else {
                         this.trimChats();
                    }
                }, this);
            },

            _ensureElement: function () {
                /* Override method from backbone.js
                 * If the #conversejs element doesn't exist, create it.
                 */
                if (!this.el) {
                    var $el = $('#conversejs');
                    if (!$el.length) {
                        $el = $('<div id="conversejs">');
                        $('body').append($el);
                    }
                    $el.html(converse.templates.chats_panel());
                    this.setElement($el, false);
                } else {
                    this.setElement(_.result(this, 'el'), false);
                }
            },

            onChatBoxAdded: function (item) {
                var view = this.get(item.get('id'));
                if (!view) {
                    if (item.get('chatroom')) {
                        view = new converse.ChatRoomView({'model': item});
                    } else if (item.get('box_id') === 'controlbox') {
                        view = new converse.ControlBoxView({model: item});
                    } else {
                        view = new converse.ChatBoxView({model: item});
                    }
                    this.add(item.get('id'), view);
                } else {
                    delete view.model; // Remove ref to old model to help garbage collection
                    view.model = item;
                    view.initialize();
                }
                this.trimChats(view);
            },

            trimChats: function (newchat) {
                /* This method is called when a newly created chat box will
                 * be shown.
                 *
                 * It checks whether there is enough space on the page to show
                 * another chat box. Otherwise it minimize the oldest chat box
                 * to create space.
                 */
                if (converse.no_trimming || (this.model.length <= 1)) {
                    return;
                }
                var oldest_chat,
                    controlbox_width = 0,
                    $minimized = converse.minimized_chats.$el,
                    minimized_width = _.contains(this.model.pluck('minimized'), true) ? $minimized.outerWidth(true) : 0,
                    boxes_width = newchat ? newchat.$el.outerWidth(true) : 0,
                    new_id = newchat ? newchat.model.get('id') : null,
                    controlbox = this.get('controlbox');

                if (!controlbox || !controlbox.$el.is(':visible')) {
                    controlbox_width = converse.controlboxtoggle.$el.outerWidth(true);
                } else {
                    controlbox_width = controlbox.$el.outerWidth(true);
                }

                _.each(this.getAll(), function (view) {
                    var id = view.model.get('id');
                    if ((id !== 'controlbox') && (id !== new_id) && (!view.model.get('minimized')) && view.$el.is(':visible')) {
                        boxes_width += view.$el.outerWidth(true);
                    }
                });

                if ((minimized_width + boxes_width + controlbox_width) > this.$el.outerWidth(true)) {
                    oldest_chat = this.getOldestMaximizedChat();
                    if (oldest_chat && oldest_chat.get('id') !== new_id) {
                        oldest_chat.minimize();
                    }
                }
            },

            getOldestMaximizedChat: function () {
                // Get oldest view (which is not controlbox)
                var i = 0;
                var model = this.model.sort().at(i);
                while (model.get('id') === 'controlbox' || model.get('minimized') === true) {
                    i++;
                    model = this.model.at(i);
                    if (!model) {
                        return null;
                    }
                }
                return model;
            },

            closeAllChatBoxes: function (include_controlbox) {
                var i, chatbox;
                // TODO: once Backbone.Overview has been refactored, we should
                // be able to call .each on the views themselves.
                this.model.each($.proxy(function (model) {
                    var id = model.get('id');
                    if (include_controlbox || id !== 'controlbox') {
                        if (this.get(id)) { // Should always resolve, but shit happens
                            this.get(id).close();
                        }
                    }
                }, this));
                return this;
            },

            showChat: function (attrs) {
                /* Find the chat box and show it. If it doesn't exist, create it.
                 */
                // TODO: Send the chat state ACTIVE to the contact once the chat box is opened.
                var chatbox  = this.model.get(attrs.jid);
                if (!chatbox) {
                    chatbox = this.model.create(attrs, {
                        'error': function (model, response) {
                            converse.log(response.responseText);
                        }
                    });
                }
                if (chatbox.get('minimized')) {
                    chatbox.maximize();
                } else {
                    chatbox.trigger('show');
                }
                return chatbox;
            }
        });

        this.MinimizedChatBoxView = Backbone.View.extend({
            tagName: 'div',
            className: 'chat-head',
            events: {
                'click .close-chatbox-button': 'close',
                'click .restore-chat': 'restore'
            },

            initialize: function () {
                this.model.messages.on('add', function (m) {
                    if (m.get('message')) {
                        this.updateUnreadMessagesCounter();
                    }
                }, this);
                this.model.on('change:minimized', this.clearUnreadMessagesCounter, this);
                this.model.on('showReceivedOTRMessage', this.updateUnreadMessagesCounter, this);
                this.model.on('showSentOTRMessage', this.updateUnreadMessagesCounter, this);
            },

            render: function () {
                var data = _.extend(
                    this.model.toJSON(),
                    { 'tooltip': __('Click to restore this chat') }
                );
                if (this.model.get('chatroom')) {
                    data.title = this.model.get('name');
                    this.$el.addClass('chat-head-chatroom');
                } else {
                    data.title = this.model.get('fullname');
                    this.$el.addClass('chat-head-chatbox');
                }
                return this.$el.html(converse.templates.trimmed_chat(data));
            },

            clearUnreadMessagesCounter: function () {
                this.model.set({'num_unread': 0});
                this.render();
            },

            updateUnreadMessagesCounter: function () {
                this.model.set({'num_unread': this.model.get('num_unread') + 1});
                this.render();
            },

            close: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                this.remove();
                this.model.destroy();
                converse.emit('chatBoxClosed', this);
                return this;
            },

            restore: _.debounce(function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                this.model.messages.off('add',null,this);
                this.remove();
                this.model.maximize();
            }, 200, true)
        });

        this.MinimizedChats = Backbone.Overview.extend({
            el: "#minimized-chats",
            events: {
                "click #toggle-minimized-chats": "toggle"
            },

            initialize: function () {
                this.initToggle();
                this.model.on("add", this.onChanged, this);
                this.model.on("destroy", this.removeChat, this);
                this.model.on("change:minimized", this.onChanged, this);
                this.model.on('change:num_unread', this.updateUnreadMessagesCounter, this);
            },

            tearDown: function () {
                this.model.off("add", this.onChanged);
                this.model.off("destroy", this.removeChat);
                this.model.off("change:minimized", this.onChanged);
                this.model.off('change:num_unread', this.updateUnreadMessagesCounter);
                return this;
            },

            initToggle: function () {
                this.toggleview = new converse.MinimizedChatsToggleView({
                    model: new converse.MinimizedChatsToggle()
                });
                var id = b64_sha1('converse.minchatstoggle'+converse.bare_jid);
                this.toggleview.model.id = id; // Appears to be necessary for backbone.browserStorage
                this.toggleview.model.browserStorage = new Backbone.BrowserStorage[converse.storage](id);
                this.toggleview.model.fetch();
            },

            render: function () {
                if (this.keys().length === 0) {
                    this.$el.hide('fast');
                } else if (this.keys().length === 1) {
                    this.$el.show('fast');
                }
                return this.$el;
            },

            toggle: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                this.toggleview.model.save({'collapsed': !this.toggleview.model.get('collapsed')});
                this.$('.minimized-chats-flyout').toggle();
            },

            onChanged: function (item) {
                if (item.get('id') !== 'controlbox' && item.get('minimized')) {
                    this.addChat(item);
                } else if (this.get(item.get('id'))) {
                    this.removeChat(item);
                }
            },

            addChat: function (item) {
                var existing = this.get(item.get('id'));
                if (existing && existing.$el.parent().length !== 0) {
                    return;
                }
                var view = new converse.MinimizedChatBoxView({model: item});
                this.$('.minimized-chats-flyout').append(view.render());
                this.add(item.get('id'), view);
                this.toggleview.model.set({'num_minimized': this.keys().length});
                this.render();
            },

            removeChat: function (item) {
                this.remove(item.get('id'));
                this.toggleview.model.set({'num_minimized': this.keys().length});
                this.render();
            },

            updateUnreadMessagesCounter: function () {
                var ls = this.model.pluck('num_unread'),
                    count = 0, i;
                for (i=0; i<ls.length; i++) { count += ls[i]; }
                this.toggleview.model.set({'num_unread': count});
                this.render();
            }
        });

        this.MinimizedChatsToggle = Backbone.Model.extend({
            initialize: function () {
                this.set({
                    'collapsed': this.get('collapsed') || false,
                    'num_minimized': this.get('num_minimized') || 0,
                    'num_unread':  this.get('num_unread') || 0
                });
            }
        });

        this.MinimizedChatsToggleView = Backbone.View.extend({
            el: '#toggle-minimized-chats',

            initialize: function () {
                this.model.on('change:num_minimized', this.render, this);
                this.model.on('change:num_unread', this.render, this);
                this.$flyout = this.$el.siblings('.minimized-chats-flyout');
            },

            render: function () {
                this.$el.html(converse.templates.toggle_chats(
                    _.extend(this.model.toJSON(), {
                        'Minimized': __('Minimized')
                    })
                ));
                if (this.model.get('collapsed')) {
                    this.$flyout.hide();
                } else {
                    this.$flyout.show();
                }
                return this.$el;
            }
        });

        this.RosterContact = Backbone.Model.extend({
            initialize: function (attributes, options) {
                var jid = attributes.jid;
                var attrs = _.extend({
                    'id': jid,
                    'fullname': jid,
                    'chat_status': 'offline',
                    'user_id': Strophe.getNodeFromJid(jid),
                    'resources': [],
                    'groups': [],
                    'image_type': 'image/png',
                    'image': "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",
                    'status': ''
                }, attributes);
                this.set(attrs);
            },

            showInRoster: function () {
                var chatStatus = this.get('chat_status');
                if ((converse.show_only_online_users && chatStatus !== 'online') || (converse.hide_offline_users && chatStatus === 'offline')) {
                    // If pending or requesting, show
                    if ((this.get('ask') === 'subscribe') || (this.get('subscription') === 'from') || (this.get('requesting') === true)) {
                        return true;
                    }
                    return false;
                }
                return true;
            }
        });

        this.RosterContactView = Backbone.View.extend({
            tagName: 'dd',

            events: {
                "click .accept-xmpp-request": "acceptRequest",
                "click .decline-xmpp-request": "declineRequest",
                "click .open-chat": "openChat",
                "click .remove-xmpp-contact": "removeContact"
            },

            initialize: function () {
                this.model.on("change", this.render, this);
                this.model.on("remove", this.remove, this);
                this.model.on("destroy", this.remove, this);
                this.model.on("open", this.openChat, this);
            },

            render: function () {
                if (!this.model.showInRoster()) {
                    this.$el.hide();
                    return this;
                } else if (this.$el[0].style.display === "none") {
                    this.$el.show();
                }
                var item = this.model,
                    ask = item.get('ask'),
                    chat_status = item.get('chat_status'),
                    requesting  = item.get('requesting'),
                    subscription = item.get('subscription');

                var classes_to_remove = [
                    'current-xmpp-contact',
                    'pending-xmpp-contact',
                    'requesting-xmpp-contact'
                    ].concat(_.keys(STATUSES));

                _.each(classes_to_remove,
                    function (cls) {
                        if (this.el.className.indexOf(cls) !== -1) {
                            this.$el.removeClass(cls);
                        }
                    }, this);
                this.$el.addClass(chat_status).data('status', chat_status);

                if ((ask === 'subscribe') || (subscription === 'from')) {
                    /* ask === 'subscribe'
                     *      Means we have asked to subscribe to them.
                     *
                     * subscription === 'from'
                     *      They are subscribed to use, but not vice versa.
                     *      We assume that there is a pending subscription
                     *      from us to them (otherwise we're in a state not
                     *      supported by converse.js).
                     *
                     *  So in both cases the user is a "pending" contact.
                     */
                    this.$el.addClass('pending-xmpp-contact');
                    this.$el.html(converse.templates.pending_contact(
                        _.extend(item.toJSON(), {
                            'desc_remove': __('Click to remove this contact')
                        })
                    ));
                } else if (requesting === true) {
                    this.$el.addClass('requesting-xmpp-contact');
                    this.$el.html(converse.templates.requesting_contact(
                        _.extend(item.toJSON(), {
                            'desc_accept': __("Click to accept this contact request"),
                            'desc_decline': __("Click to decline this contact request")
                        })
                    ));
                    converse.controlboxtoggle.showControlBox();
                } else if (subscription === 'both' || subscription === 'to') {
                    this.$el.addClass('current-xmpp-contact');
                    this.$el.html(converse.templates.roster_item(
                        _.extend(item.toJSON(), {
                            'desc_status': STATUSES[chat_status||'offline'],
                            'desc_chat': __('Click to chat with this contact'),
                            'desc_remove': __('Click to remove this contact')
                        })
                    ));
                }
                return this;
            },

            openChat: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                return converse.chatboxviews.showChat(this.model.attributes);
            },

            removeContact: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var result = confirm(__("Are you sure you want to remove this contact?"));
                if (result === true) {
                    var bare_jid = this.model.get('jid');
                    converse.connection.roster.remove(bare_jid, $.proxy(function (iq) {
                        converse.connection.roster.unauthorize(bare_jid);
                        converse.rosterview.model.remove(bare_jid);
                        this.model.destroy();
                        this.remove();
                    }, this));
                }
            },

            acceptRequest: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var jid = this.model.get('jid');
                converse.connection.roster.authorize(jid);
                converse.connection.roster.add(jid, this.model.get('fullname'), [], function (iq) {
                    converse.connection.roster.subscribe(jid, null, converse.xmppstatus.get('fullname'));
                });
            },

            declineRequest: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var result = confirm(__("Are you sure you want to decline this contact request?"));
                if (result === true) {
                    converse.connection.roster.unauthorize(this.model.get('jid'));
                    this.model.destroy();
                }
                return this;
            }
        });

        this.RosterContacts = Backbone.Collection.extend({
            model: converse.RosterContact,
            comparator: function (contact1, contact2) {
                var name1, name2;
                var status1 = contact1.get('chat_status') || 'offline';
                var status2 = contact2.get('chat_status') || 'offline';
                if (STATUS_WEIGHTS[status1] === STATUS_WEIGHTS[status2]) {
                    name1 = contact1.get('fullname').toLowerCase();
                    name2 = contact2.get('fullname').toLowerCase();
                    return name1 < name2 ? -1 : (name1 > name2? 1 : 0);
                } else  {
                    return STATUS_WEIGHTS[status1] < STATUS_WEIGHTS[status2] ? -1 : 1;
                }
            },

            subscribeToSuggestedItems: function (msg) {
                $(msg).find('item').each(function (i, items) {
                    var $this = $(this),
                        jid = $this.attr('jid'),
                        action = $this.attr('action'),
                        fullname = $this.attr('name');
                    if (action === 'add') {
                        converse.connection.roster.subscribe(jid, null, converse.xmppstatus.get('fullname'));
                    }
                });
                return true;
            },

            isSelf: function (jid) {
                return (Strophe.getBareJidFromJid(jid) === Strophe.getBareJidFromJid(converse.connection.jid));
            },

            addResource: function (bare_jid, resource) {
                var item = this.get(bare_jid),
                    resources;
                if (item) {
                    resources = item.get('resources');
                    if (resources) {
                        if (_.indexOf(resources, resource) == -1) {
                            resources.push(resource);
                            item.set({'resources': resources});
                        }
                    } else  {
                        item.set({'resources': [resource]});
                    }
                }
            },

            removeResource: function (bare_jid, resource) {
                var item = this.get(bare_jid),
                    resources,
                    idx;
                if (item) {
                    resources = item.get('resources');
                    idx = _.indexOf(resources, resource);
                    if (idx !== -1) {
                        resources.splice(idx, 1);
                        item.save({'resources': resources});
                        return resources.length;
                    }
                }
                return 0;
            },

            subscribeBack: function (jid) {
                var bare_jid = Strophe.getBareJidFromJid(jid);
                if (converse.connection.roster.findItem(bare_jid)) {
                    converse.connection.roster.authorize(bare_jid);
                    converse.connection.roster.subscribe(jid, null, converse.xmppstatus.get('fullname'));
                } else {
                    converse.connection.roster.add(jid, '', [], function (iq) {
                        converse.connection.roster.authorize(bare_jid);
                        converse.connection.roster.subscribe(jid, null, converse.xmppstatus.get('fullname'));
                    });
                }
            },

            unsubscribe: function (jid) {
                /* Upon receiving the presence stanza of type "unsubscribed",
                * the user SHOULD acknowledge receipt of that subscription state
                * notification by sending a presence stanza of type "unsubscribe"
                * this step lets the user's server know that it MUST no longer
                * send notification of the subscription state change to the user.
                */
                converse.xmppstatus.sendPresence('unsubscribe');
                if (converse.connection.roster.findItem(jid)) {
                    converse.connection.roster.remove(jid, function (iq) {
                        converse.rosterview.model.remove(jid);
                    });
                }
            },

            getNumOnlineContacts: function () {
                var count = 0,
                    ignored = ['offline', 'unavailable'],
                    models = this.models,
                    models_length = models.length,
                    i;
                if (converse.show_only_online_users) {
                    ignored = _.union(ignored, ['dnd', 'xa', 'away']);
                }
                for (i=0; i<models_length; i++) {
                    if (_.indexOf(ignored, models[i].get('chat_status')) === -1) {
                        count++;
                    }
                }
                return count;
            },

            clearCache: function (items) {
                /* The localstorage cache containing roster contacts might contain
                * some contacts that aren't actually in our roster anymore. We
                * therefore need to remove them now.
                *
                * TODO: The method is a performance bottleneck.
                * Basically we need to chuck out strophe.roster and
                * rewrite it with backbone.js and well integrated into
                * converse.js. Then we won't need to have this method at all.
                */
                _.each(_.difference(this.pluck('jid'), _.pluck(items, 'jid')), $.proxy(function (jid) {
                    var contact = this.get(jid);
                    if (contact && !contact.get('requesting')) {
                        contact.destroy();
                    }
                }, this));
            },

            rosterHandler: function (items, item) {
                converse.emit('roster', items);
                this.clearCache(items);
                var new_items = item ? [item] : items;
                _.each(new_items, function (item, index, items) {
                    if (this.isSelf(item.jid)) { return; }
                    var model = this.get(item.jid);
                    if (!model) {
                        var is_last = (index === (items.length-1)) ? true : false;
                        if ((item.subscription === 'none') && (item.ask === null) && !is_last) {
                            // We're not interested in zombies
                            // (Hack: except if it's the last item, then we still
                            // add it so that the roster will be shown).
                            return;
                        }
                        this.create({
                            ask: item.ask,
                            fullname: item.name || item.jid,
                            groups: item.groups,
                            jid: item.jid,
                            subscription: item.subscription
                        }, {sort: false});
                    } else {
                        if ((item.subscription === 'none') && (item.ask === null)) {
                            // This user is no longer in our roster
                            model.destroy();
                        } else {
                            // We only find out about requesting contacts via the
                            // presence handler, so if we receive a contact
                            // here, we know they aren't requesting anymore.
                            // see docs/DEVELOPER.rst
                            model.save({
                                subscription: item.subscription,
                                ask: item.ask,
                                requesting: null,
                                groups: item.groups
                            });
                        }
                    }
                }, this);

                if (!converse.initial_presence_sent) {
                    /* Once we've sent out our initial presence stanza, we'll
                     * start receiving presence stanzas from our contacts.
                     * We therefore only want to do this after our roster has
                     * been set up (otherwise we can't meaningfully process
                     * incoming presence stanzas).
                     */
                    converse.initial_presence_sent = 1;
                    converse.xmppstatus.sendPresence();
                }
            },

            handleIncomingSubscription: function (jid) {
                var bare_jid = Strophe.getBareJidFromJid(jid);
                var item = this.get(bare_jid);

                if (!converse.allow_contact_requests) {
                    converse.connection.roster.unauthorize(bare_jid);
                    return true;
                }
                if (converse.auto_subscribe) {
                    if ((!item) || (item.get('subscription') != 'to')) {
                        this.subscribeBack(jid);
                    } else {
                        converse.connection.roster.authorize(bare_jid);
                    }
                } else {
                    if ((item) && (item.get('subscription') != 'none'))  {
                        converse.connection.roster.authorize(bare_jid);
                    } else {
                        if (!this.get(bare_jid)) {
                            converse.getVCard(
                                bare_jid,
                                $.proxy(function (jid, fullname, img, img_type, url) {
                                    this.create({
                                        jid: bare_jid,
                                        subscription: 'none',
                                        ask: null,
                                        requesting: true,
                                        fullname: fullname || jid,
                                        image: img,
                                        image_type: img_type,
                                        url: url,
                                        vcard_updated: moment().format()
                                    });
                                }, this),
                                $.proxy(function (jid, iq) {
                                    converse.log("Error while retrieving vcard");
                                    this.create({
                                        jid: bare_jid,
                                        subscription: 'none',
                                        ask: null,
                                        requesting: true,
                                        fullname: bare_jid,
                                        vcard_updated: moment().format()
                                    });
                                }, this)
                            );
                        } else {
                            return true;
                        }
                    }
                }
                return true;
            },

            presenceHandler: function (presence) {
                var $presence = $(presence),
                    presence_type = $presence.attr('type');
                if (presence_type === 'error') {
                    return true;
                }
                var jid = $presence.attr('from'),
                    bare_jid = Strophe.getBareJidFromJid(jid),
                    resource = Strophe.getResourceFromJid(jid),
                    $show = $presence.find('show'),
                    chat_status = $show.text() || 'online',
                    status_message = $presence.find('status'),
                    contact;

                if (this.isSelf(bare_jid)) {
                    if ((converse.connection.jid !== jid)&&(presence_type !== 'unavailable')) {
                        // Another resource has changed it's status, we'll update ours as well.
                        converse.xmppstatus.save({'status': chat_status});
                    }
                    return true;
                } else if (($presence.find('x').attr('xmlns') || '').indexOf(Strophe.NS.MUC) === 0) {
                    return true; // Ignore MUC
                }
                contact = this.get(bare_jid);
                if (contact && (status_message.text() != contact.get('status'))) {
                    contact.save({'status': status_message.text()});
                }
                if ((presence_type === 'subscribed') || (presence_type === 'unsubscribe')) {
                    return true;
                } else if (presence_type === 'subscribe') {
                    return this.handleIncomingSubscription(jid);
                } else if (presence_type === 'unsubscribed') {
                    this.unsubscribe(bare_jid);
                } else if (presence_type === 'unavailable') {
                    if (this.removeResource(bare_jid, resource) === 0) {
                        chat_status = "offline";
                    }
                    if (contact && chat_status) {
                        contact.save({'chat_status': chat_status});
                    }
                } else if (contact) {
                    // presence_type is undefined
                    this.addResource(bare_jid, resource);
                    contact.save({'chat_status': chat_status});
                }
                return true;
            }
        });

        this.RosterGroup = Backbone.Model.extend({
            initialize: function (attributes, options) {
                this.set(_.extend({
                    description: DESC_GROUP_TOGGLE,
                    state: OPENED
                }, attributes));
                // Collection of contacts belonging to this group.
                this.contacts = new converse.RosterContacts();
            }
        });

        this.RosterGroupView = Backbone.Overview.extend({
            tagName: 'dt',
            className: 'roster-group',
            events: {
                "click a.group-toggle": "toggle"
            },

            initialize: function () {
                this.model.contacts.on("add", this.addContact, this);
                this.model.contacts.on("change:subscription", this.onContactSubscriptionChange, this);
                this.model.contacts.on("change:requesting", this.onContactRequestChange, this);
                this.model.contacts.on("change:chat_status", function (contact) {
                    // This might be optimized by instead of first sorting,
                    // finding the correct position in positionContact
                    this.model.contacts.sort();
                    this.positionContact(contact).render();
                }, this);
                this.model.contacts.on("destroy", this.onRemove, this);
                this.model.contacts.on("remove", this.onRemove, this);
                converse.roster.on('change:groups', this.onContactGroupChange, this);
            },

            render: function () {
                this.$el.attr('data-group', this.model.get('name'));
                this.$el.html(
                    $(converse.templates.group_header({
                        label_group: this.model.get('name'),
                        desc_group_toggle: this.model.get('description'),
                        toggle_state: this.model.get('state')
                    }))
                );
                return this;
            },

            addContact: function (contact) {
                var view = new converse.RosterContactView({model: contact});
                this.add(contact.get('id'), view);
                view = this.positionContact(contact).render();
                if (contact.showInRoster()) {
                    if (this.model.get('state') === CLOSED) {
                        if (view.$el[0].style.display !== "none") { view.$el.hide(); }
                        if (this.$el[0].style.display === "none") { this.$el.show(); }
                    } else {
                        if (this.$el[0].style.display !== "block") { this.show(); }
                    }
                }
            },

            positionContact: function (contact) {
                /* Place the contact's DOM element in the correct alphabetical
                 * position amongst the other contacts in this group.
                 */
                var view = this.get(contact.get('id'));
                var index = this.model.contacts.indexOf(contact);
                view.$el.detach();
                if (index === 0) {
                    this.$el.after(view.$el);
                } else if (index == (this.model.contacts.length-1)) {
                    this.$el.nextUntil('dt').last().after(view.$el);
                } else {
                    this.$el.nextUntil('dt').eq(index).before(view.$el);
                }
                return view;
            },

            show: function () {
                // FIXME: There's a bug here, if show_only_online_users is true
                // Possible solution, get the group, call _.each and check
                // showInRoster
                this.$el.nextUntil('dt').addBack().show();
            },

            hide: function () {
                this.$el.nextUntil('dt').addBack().hide();
            },

            filter: function (q) {
                /* Filter the group's contacts based on the query "q".
                 * The query is matched against the contact's full name.
                 * If all contacts are filtered out (i.e. hidden), then the
                 * group must be filtered out as well.
                 */
                var matches, rejects;
                if (q.length === 0) {
                    if (this.model.get('state') === OPENED) {
                        this.model.contacts.each($.proxy(function (item) {
                            if (item.showInRoster()) {
                                this.get(item.get('id')).$el.show();
                            }
                        }, this));
                    }
                    this.showIfNecessary();
                } else {
                    q = q.toLowerCase();
                    matches = this.model.contacts.filter(contains.not('fullname', q));
                    if (matches.length === this.model.contacts.length) { // hide the whole group
                        this.hide();
                    } else {
                        _.each(matches, $.proxy(function (item) {
                            this.get(item.get('id')).$el.hide();
                        }, this));
                        _.each(this.model.contacts.reject(contains.not('fullname', q)), $.proxy(function (item) {
                            this.get(item.get('id')).$el.show();
                        }, this));
                        this.showIfNecessary();
                    }
                }
            },

            showIfNecessary: function () {
                if (!this.$el.is(':visible') && this.model.contacts.length > 0) {
                    this.$el.show();
                }
            },

            toggle: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var $el = $(ev.target);
                if ($el.hasClass("icon-opened")) {
                    this.$el.nextUntil('dt').slideUp();
                    this.model.save({state: CLOSED});
                    $el.removeClass("icon-opened").addClass("icon-closed");
                } else {
                    $el.removeClass("icon-closed").addClass("icon-opened");
                    this.model.save({state: OPENED});
                    this.filter(
                        converse.rosterview.$('.roster-filter').val(),
                        converse.rosterview.$('.filter-type').val()
                    );
                }
            },

            onContactGroupChange: function (contact) {
                var in_this_group = _.contains(contact.get('groups'), this.model.get('name'));
                var cid = contact.get('id');
                var in_this_overview = !this.get(cid);
                if (in_this_group && !in_this_overview) {
                    this.model.contacts.remove(cid);
                } else if (!in_this_group && in_this_overview) {
                    this.addContact(contact);
                }
            },

            onContactSubscriptionChange: function (contact) {
                if ((this.model.get('name') === HEADER_PENDING_CONTACTS) && contact.get('subscription') !== 'from') {
                    this.model.contacts.remove(contact.get('id'));
                }
            },

            onContactRequestChange: function (contact) {
                if ((this.model.get('name') === HEADER_REQUESTING_CONTACTS) && !contact.get('requesting')) {
                    this.model.contacts.remove(contact.get('id'));
                }
            },

            onRemove: function (contact) {
                this.remove(contact.get('id'));
                if (this.model.contacts.length === 0) {
                    this.$el.hide();
                }
            }
        });

        this.RosterGroups = Backbone.Collection.extend({
            model: converse.RosterGroup,
            comparator: function (a, b) {
                /* Groups are sorted alphabetically, ignoring case.
                 * However, Ungrouped, Requesting Contacts and Pending Contacts
                 * appear last and in that order. */
                a = a.get('name');
                b = b.get('name');
                var special_groups = _.keys(HEADER_WEIGHTS);
                var a_is_special = _.contains(special_groups, a);
                var b_is_special = _.contains(special_groups, b);
                if (!a_is_special && !b_is_special ) {
                    return a.toLowerCase() < b.toLowerCase() ? -1 : (a.toLowerCase() > b.toLowerCase() ? 1 : 0);
                } else if (a_is_special && b_is_special) {
                    return HEADER_WEIGHTS[a] < HEADER_WEIGHTS[b] ? -1 : (HEADER_WEIGHTS[a] > HEADER_WEIGHTS[b] ? 1 : 0);
                } else if (!a_is_special && b_is_special) {
                    return (b === HEADER_CURRENT_CONTACTS) ? 1 : -1;
                } else if (a_is_special && !b_is_special) {
                    return (a === HEADER_CURRENT_CONTACTS) ? -1 : 1;
                }
            }
        });

        this.RosterView = Backbone.Overview.extend({
            tagName: 'div',
            id: 'converse-roster',
            events: {
                "keydown .roster-filter": "liveFilter",
                "click .onX": "clearFilter",
                "mousemove .x": "togglePointer",
                "change .filter-type": "changeFilterType"
            },

            initialize: function () {
                this.registerRosterHandler();
                this.registerRosterXHandler();
                this.registerPresenceHandler();
                converse.roster.on("add", this.onContactAdd, this);
                converse.roster.on('change', this.onContactChange, this);
                converse.roster.on("destroy", this.update, this);
                converse.roster.on("remove", this.update, this);
                this.model.on("add", this.onGroupAdd, this);
                this.model.on("reset", this.reset, this);
                this.$roster = $('<dl class="roster-contacts" style="display: none;"></dl>');
            },

            update: _.debounce(function () {
                var $count = $('#online-count');
                $count.text('('+converse.roster.getNumOnlineContacts()+')');
                if (!$count.is(':visible')) {
                    $count.show();
                }
                if (this.$roster.parent().length === 0) {
                    this.$el.append(this.$roster.show());
                }
                return this.showHideFilter();
            }, converse.animate ? 100 : 0),

            render: function () {
                this.$el.html(converse.templates.roster({
                    placeholder: __('Type to filter'),
                    label_contacts: LABEL_CONTACTS,
                    label_groups: LABEL_GROUPS
                }));
                return this;
            },

            fetch: function () {
                this.model.fetch({
                    silent: true, // We use the success handler to handle groups that were added,
                                  // we need to first have all groups before positionFetchedGroups
                                  // will work properly.
                    success: $.proxy(function (collection, resp, options) {
                        if (collection.length !== 0) {
                            this.positionFetchedGroups(collection, resp, options);
                        }
                        converse.roster.fetch({
                            add: true,
                            success: function (collection) {
                                // XXX: Bit of a hack.
                                // strophe.roster expects .get to be called for
                                // every page load so that its "items" attr
                                // gets populated.
                                // This is very inefficient for large rosters,
                                // and we already have the roster cached in
                                // sessionStorage.
                                // Therefore we manually populate the "items"
                                // attr.
                                // Ideally we should eventually replace
                                // strophe.roster with something better.
                                if (collection.length > 0) {
                                    collection.each(function (item) {
                                        converse.connection.roster.items.push({
                                            name         : item.get('fullname'),
                                            jid          : item.get('jid'),
                                            subscription : item.get('subscription'),
                                            ask          : item.get('ask'),
                                            groups       : item.get('groups'),
                                            resources    : item.get('resources')
                                        });
                                    });
                                    converse.initial_presence_sent = 1;
                                    converse.xmppstatus.sendPresence();
                                } else {
                                    converse.connection.roster.get();
                                }
                            }
                        });
                    }, this)
                });
                return this;
            },

            changeFilterType: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                this.clearFilter();
                this.filter(
                    this.$('.roster-filter').val(),
                    ev.target.value
                );
            },

            tog: function (v) {
                return v?'addClass':'removeClass';
            },

            togglePointer: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var el = ev.target;
                $(el)[this.tog(el.offsetWidth-18 < ev.clientX-el.getBoundingClientRect().left)]('onX');
            },

            filter: function (query, type) {
                var matches;
                query = query.toLowerCase();
                if (type === 'groups') {
                    _.each(this.getAll(), function (view, idx) {
                        if (view.model.get('name').toLowerCase().indexOf(query.toLowerCase()) === -1) {
                            view.hide();
                        } else if (view.model.contacts.length > 0) {
                            view.show();
                        }
                    });
                } else {
                    _.each(this.getAll(), function (view) {
                        view.filter(query, type);
                    });
                }
            },

            liveFilter: _.debounce(function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var $filter = this.$('.roster-filter');
                var q = $filter.val();
                var t = this.$('.filter-type').val();
                $filter[this.tog(q)]('x');
                this.filter(q, t);
            }, 300),

            clearFilter: function (ev) {
                if (ev && ev.preventDefault) {
                    ev.preventDefault();
                    $(ev.target).removeClass('x onX').val('');
                }
                this.filter('');
            },

            showHideFilter: function () {
                if (!this.$el.is(':visible')) {
                    return;
                }
                var $filter = this.$('.roster-filter');
                var $type  = this.$('.filter-type');
                var visible = $filter.is(':visible');
                if (visible && $filter.val().length > 0) {
                    // Don't hide if user is currently filtering.
                    return;
                }
                if (this.$roster.hasScrollBar()) {
                    if (!visible) {
                        $filter.show();
                        $type.show();
                    }
                } else {
                    $filter.hide();
                    $type.hide();
                }
                return this;
            },

            reset: function () {
                converse.roster.reset();
                this.removeAll();
                this.$roster = $('<dl class="roster-contacts" style="display: none;"></dl>');
                this.render().update();
                return this;
            },

            registerRosterHandler: function () {
                // Register handlers that depend on the roster
                converse.connection.roster.registerCallback(
                    $.proxy(converse.roster.rosterHandler, converse.roster)
                );
            },

            registerRosterXHandler: function () {
                var t = 0;
                converse.connection.addHandler(
                    function (msg) {
                        window.setTimeout(
                            function () {
                                converse.connection.flush();
                                $.proxy(converse.roster.subscribeToSuggestedItems, converse.roster)(msg);
                            },
                            t
                        );
                        t += $(msg).find('item').length*250;
                        return true;
                    },
                    'http://jabber.org/protocol/rosterx', 'message', null);
            },

            registerPresenceHandler: function () {
                converse.connection.addHandler(
                    $.proxy(function (presence) {
                        converse.roster.presenceHandler(presence);
                        return true;
                    }, this), null, 'presence', null);
            },

            onGroupAdd: function (group) {
                var view = new converse.RosterGroupView({model: group});
                this.add(group.get('name'), view.render());
                this.positionGroup(view);
            },

            onContactAdd: function (contact) {
                this.addRosterContact(contact).update();
                if (!contact.get('vcard_updated')) {
                    // This will update the vcard, which triggers a change
                    // request which will rerender the roster contact.
                    converse.getVCard(contact.get('jid'));
                }
            },

            onContactChange: function (contact) {
                this.updateChatBox(contact).update();
                if (_.has(contact.changed, 'subscription')) {
                    if (contact.changed.subscription == 'from') {
                        this.addContactToGroup(contact, HEADER_PENDING_CONTACTS);
                    } else if (contact.get('subscription') === 'both') {
                        this.addExistingContact(contact);
                    }
                }
                if (_.has(contact.changed, 'ask') && contact.changed.ask == 'subscribe') {
                    this.addContactToGroup(contact, HEADER_PENDING_CONTACTS);
                }
                if (_.has(contact.changed, 'subscription') && contact.changed.requesting == 'true') {
                    this.addContactToGroup(contact, HEADER_REQUESTING_CONTACTS);
                }
                this.liveFilter();
            },

            updateChatBox: function (contact) {
                var chatbox = converse.chatboxes.get(contact.get('jid')),
                    changes = {};
                if (!chatbox) {
                    return this;
                }
                if (_.has(contact.changed, 'chat_status')) {
                    changes.chat_status = contact.get('chat_status');
                }
                if (_.has(contact.changed, 'status')) {
                    changes.status = contact.get('status');
                }
                chatbox.save(changes);
                return this;
            },

            positionFetchedGroups: function (model, resp, options) {
                /* Instead of throwing an add event for each group
                    * fetched, we wait until they're all fetched and then
                    * we position them.
                    * Works around the problem of positionGroup not
                    * working when all groups besides the one being
                    * positioned aren't already in inserted into the
                    * roster DOM element.
                    */
                model.sort();
                model.each($.proxy(function (group, idx) {
                    var view = this.get(group.get('name'));
                    if (!view) {
                        view = new converse.RosterGroupView({model: group});
                        this.add(group.get('name'), view.render());
                    }
                    if (idx === 0) {
                        this.$roster.append(view.$el);
                    } else {
                        this.appendGroup(view);
                    }
                }, this));
            },

            positionGroup: function (view) {
                /* Place the group's DOM element in the correct alphabetical
                 * position amongst the other groups in the roster.
                 */
                var $groups = this.$roster.find('.roster-group'),
                    index = $groups.length ? this.model.indexOf(view.model) : 0;
                if (index === 0) {
                    this.$roster.prepend(view.$el);
                } else if (index == (this.model.length-1)) {
                    this.appendGroup(view);
                } else {
                    $($groups.eq(index)).before(view.$el);
                }
                return this;
            },

            appendGroup: function (view) {
                /* Add the group at the bottom of the roster
                 */
                var $last = this.$roster.find('.roster-group').last();
                var $siblings = $last.siblings('dd');
                if ($siblings.length > 0) {
                    $siblings.last().after(view.$el);
                } else {
                    $last.after(view.$el);
                }
                return this;
            },

            getGroup: function (name) {
                /* Returns the group as specified by name.
                 * Creates the group if it doesn't exist.
                 */
                var view =  this.get(name);
                if (view) {
                    return view.model;
                }
                return this.model.create({name: name, id: b64_sha1(name)});
            },

            addContactToGroup: function (contact, name) {
                this.getGroup(name).contacts.add(contact);
            },

            addExistingContact: function (contact) {
                var groups;
                if (converse.roster_groups) {
                    groups = contact.get('groups');
                    if (groups.length === 0) {
                        groups = [HEADER_UNGROUPED];
                    }
                } else {
                    groups = [HEADER_CURRENT_CONTACTS];
                }
                _.each(groups, $.proxy(function (name) {
                    this.addContactToGroup(contact, name);
                }, this));
            },

            addRosterContact: function (contact) {
                if (contact.get('subscription') === 'both' || contact.get('subscription') === 'to') {
                    this.addExistingContact(contact);
                } else {
                    if ((contact.get('ask') === 'subscribe') || (contact.get('subscription') === 'from')) {
                        this.addContactToGroup(contact, HEADER_PENDING_CONTACTS);
                    } else if (contact.get('requesting') === true) {
                        this.addContactToGroup(contact, HEADER_REQUESTING_CONTACTS);
                    }
                }
                return this;
            }
        });

        this.XMPPStatus = Backbone.Model.extend({
            initialize: function () {
                this.set({
                    'status' : this.getStatus()
                });
                this.on('change', $.proxy(function (item) {
                    if (this.get('fullname') === undefined) {
                        converse.getVCard(
                            null, // No 'to' attr when getting one's own vCard
                            $.proxy(function (jid, fullname, image, image_type, url) {
                                this.save({'fullname': fullname});
                            }, this)
                        );
                    }
                    if (_.has(item.changed, 'status')) {
                        converse.emit('statusChanged', this.get('status'));
                    }
                    if (_.has(item.changed, 'status_message')) {
                        converse.emit('statusMessageChanged', this.get('status_message'));
                    }
                }, this));
            },

            sendPresence: function (type, status_message) {
                if (typeof type === 'undefined') {
                    type = this.get('status') || 'online';
                }
                if (typeof status_message === 'undefined') {
                    status_message = this.get('status_message');
                }
                var presence;
                // Most of these presence types are actually not explicitly sent,
                // but I add all of them here fore reference and future proofing.
                if ((type === 'unavailable') ||
                        (type === 'probe') ||
                        (type === 'error') ||
                        (type === 'unsubscribe') ||
                        (type === 'unsubscribed') ||
                        (type === 'subscribe') ||
                        (type === 'subscribed')) {
                    presence = $pres({'type': type});
                } else if (type === 'offline') {
                    presence = $pres({'type': 'unavailable'});
                    if (status_message) {
                        presence.c('show').t(type);
                    }
                } else {
                    if (type === 'online') {
                        presence = $pres();
                    } else {
                        presence = $pres().c('show').t(type).up();
                    }
                    if (status_message) {
                        presence.c('status').t(status_message);
                    }
                }
                converse.connection.send(presence);
            },

            setStatus: function (value) {
                this.sendPresence(value);
                this.save({'status': value});
            },

            getStatus: function() {
                return this.get('status') || 'online';
            },

            setStatusMessage: function (status_message) {
                this.sendPresence(this.getStatus(), status_message);
                var prev_status = this.get('status_message');
                this.save({'status_message': status_message});
                if (this.xhr_custom_status) {
                    $.ajax({
                        url:  this.xhr_custom_status_url,
                        type: 'POST',
                        data: {'msg': status_message}
                    });
                }
                if (prev_status === status_message) {
                    this.trigger("update-status-ui", this);
                }
            }
        });

        this.XMPPStatusView = Backbone.View.extend({
            el: "span#xmpp-status-holder",

            events: {
                "click a.choose-xmpp-status": "toggleOptions",
                "click #fancy-xmpp-status-select a.change-xmpp-status-message": "renderStatusChangeForm",
                "submit #set-custom-xmpp-status": "setStatusMessage",
                "click .dropdown dd ul li a": "setStatus"
            },

            initialize: function () {
                this.model.on("change:status", this.updateStatusUI, this);
                this.model.on("change:status_message", this.updateStatusUI, this);
                this.model.on("update-status-ui", this.updateStatusUI, this);
            },

           render: function () {
                // Replace the default dropdown with something nicer
                var $select = this.$el.find('select#select-xmpp-status'),
                    chat_status = this.model.get('status') || 'offline',
                    options = $('option', $select),
                    $options_target,
                    options_list = [],
                    that = this;
                this.$el.html(converse.templates.choose_status());
                this.$el.find('#fancy-xmpp-status-select')
                        .html(converse.templates.chat_status({
                            'status_message': this.model.get('status_message') || __("I am %1$s", this.getPrettyStatus(chat_status)),
                            'chat_status': chat_status,
                            'desc_custom_status': __('Click here to write a custom status message'),
                            'desc_change_status': __('Click to change your chat status')
                            }));
                // iterate through all the <option> elements and add option values
                options.each(function (){
                    options_list.push(converse.templates.status_option({
                        'value': $(this).val(),
                        'text': this.text
                    }));
                });
                $options_target = this.$el.find("#target dd ul").hide();
                $options_target.append(options_list.join(''));
                $select.remove();
                return this;
            },

            toggleOptions: function (ev) {
                ev.preventDefault();
                $(ev.target).parent().parent().siblings('dd').find('ul').toggle('fast');
            },

            renderStatusChangeForm: function (ev) {
                ev.preventDefault();
                var status_message = this.model.get('status') || 'offline';
                var input = converse.templates.change_status_message({
                    'status_message': status_message,
                    'label_custom_status': __('Custom status'),
                    'label_save': __('Save')
                });
                this.$el.find('.xmpp-status').replaceWith(input);
                this.$el.find('.custom-xmpp-status').focus().focus();
            },

            setStatusMessage: function (ev) {
                ev.preventDefault();
                this.model.setStatusMessage($(ev.target).find('input').val());
            },

            setStatus: function (ev) {
                ev.preventDefault();
                var $el = $(ev.target),
                    value = $el.attr('data-value');
                if (value === 'logout') {
                    this.$el.find(".dropdown dd ul").hide();
                    converse.logOut();
                } else {
                    this.model.setStatus(value);
                    this.$el.find(".dropdown dd ul").hide();
                }
            },

            getPrettyStatus: function (stat) {
                var pretty_status;
                if (stat === 'chat') {
                    pretty_status = __('online');
                } else if (stat === 'dnd') {
                    pretty_status = __('busy');
                } else if (stat === 'xa') {
                    pretty_status = __('away for long');
                } else if (stat === 'away') {
                    pretty_status = __('away');
                } else {
                    pretty_status = __(stat) || __('online');
                }
                return pretty_status;
            },

            updateStatusUI: function (model) {
                var stat = model.get('status');
                // # For translators: the %1$s part gets replaced with the status
                // # Example, I am online
                var status_message = model.get('status_message') || __("I am %1$s", this.getPrettyStatus(stat));
                this.$el.find('#fancy-xmpp-status-select').html(
                    converse.templates.chat_status({
                        'chat_status': stat,
                        'status_message': status_message,
                        'desc_custom_status': __('Click here to write a custom status message'),
                        'desc_change_status': __('Click to change your chat status')
                    }));
            }
        });

        this.BOSHSession = Backbone.Model;
        this.Feature = Backbone.Model;
        this.Features = Backbone.Collection.extend({
            /* Service Discovery
            * -----------------
            * This collection stores Feature Models, representing features
            * provided by available XMPP entities (e.g. servers)
            * See XEP-0030 for more details: http://xmpp.org/extensions/xep-0030.html
            * All features are shown here: http://xmpp.org/registrar/disco-features.html
            */
            model: converse.Feature,
            initialize: function () {
                this.addClientIdentities().addClientFeatures();
                this.browserStorage = new Backbone.BrowserStorage[converse.storage](
                    b64_sha1('converse.features'+converse.bare_jid));
                if (this.browserStorage.records.length === 0) {
                    // browserStorage is empty, so we've likely never queried this
                    // domain for features yet
                    converse.connection.disco.info(converse.domain, null, $.proxy(this.onInfo, this));
                    converse.connection.disco.items(converse.domain, null, $.proxy(this.onItems, this));
                } else {
                    this.fetch({add:true});
                }
            },

            addClientIdentities: function () {
                /* See http://xmpp.org/registrar/disco-categories.html
                 */
                 converse.connection.disco.addIdentity('client', 'web', 'Converse.js');
                 return this;
            },

            addClientFeatures: function () {
                /* The strophe.disco.js plugin keeps a list of features which
                 * it will advertise to any #info queries made to it.
                 *
                 * See: http://xmpp.org/extensions/xep-0030.html#info
                 *
                 * TODO: these features need to be added in the relevant
                 * feature-providing Models, not here
                 */
                 converse.connection.disco.addFeature(Strophe.NS.CHATSTATES);
                 converse.connection.disco.addFeature('http://jabber.org/protocol/rosterx'); // Limited support
                 converse.connection.disco.addFeature('jabber:x:conference');
                 converse.connection.disco.addFeature('urn:xmpp:carbons:2');
                 converse.connection.disco.addFeature(Strophe.NS.VCARD);
                 converse.connection.disco.addFeature(Strophe.NS.BOSH);
                 converse.connection.disco.addFeature(Strophe.NS.DISCO_INFO);
                 converse.connection.disco.addFeature(Strophe.NS.MUC);
                 return this;
            },

            onItems: function (stanza) {
                $(stanza).find('query item').each($.proxy(function (idx, item) {
                    converse.connection.disco.info(
                        $(item).attr('jid'),
                        null,
                        $.proxy(this.onInfo, this));
                }, this));
            },

            onInfo: function (stanza) {
                var $stanza = $(stanza);
                if (($stanza.find('identity[category=server][type=im]').length === 0) &&
                    ($stanza.find('identity[category=conference][type=text]').length === 0)) {
                    // This isn't an IM server component
                    return;
                }
                $stanza.find('feature').each($.proxy(function (idx, feature) {
                    this.create({
                        'var': $(feature).attr('var'),
                        'from': $stanza.attr('from')
                    });
                }, this));
            }
        });

        this.RegisterPanel = Backbone.View.extend({
            tagName: 'div',
            id: "register",
            className: 'controlbox-pane',
            events: {
                'submit form#converse-register': 'onProviderChosen'
            },

            initialize: function (cfg) {
                this.reset();
                this.$parent = cfg.$parent;
                this.$tabs = cfg.$parent.parent().find('#controlbox-tabs');
                this.registerHooks();
            },

            render: function () {
                this.$parent.append(this.$el.html(
                    converse.templates.register_panel({
                        'label_domain': __("Your XMPP provider's domain name:"),
                        'label_register': __('Fetch registration form'),
                        'help_providers': __('Tip: A list of public XMPP providers is available'),
                        'help_providers_link': __('here'),
                        'href_providers': converse.providers_link,
                        'domain_placeholder': converse.domain_placeholder
                    })
                ));
                this.$tabs.append(converse.templates.register_tab({label_register: __('Register')}));
                return this;
            },

            registerHooks: function () {
                /* Hook into Strophe's _connect_cb, so that we can send an IQ
                 * requesting the registration fields.
                 */
                var conn = converse.connection;
                var connect_cb = conn._connect_cb.bind(conn);
                conn._connect_cb = $.proxy(function (req, callback, raw) {
                    if (!this._registering) {
                        connect_cb(req, callback, raw);
                    } else {
                        if (this.getRegistrationFields(req, callback, raw)) {
                            this._registering = false;
                        }
                    }
                }, this);
            },

            getRegistrationFields: function (req, _callback, raw) {
                /*  Send an IQ stanza to the XMPP server asking for the
                 *  registration fields.
                 *
                 *  Parameters:
                 *    (Strophe.Request) req - The current request
                 *    (Function) callback
                 */
                converse.log("sendQueryStanza was called");
                var conn = converse.connection;
                conn.connected = true;

                var body = conn._proto._reqToData(req);
                if (!body) { return; }
                if (conn._proto._connect_cb(body) === Strophe.Status.CONNFAIL) {
                    return false;
                }
                var register = body.getElementsByTagName("register");
                var mechanisms = body.getElementsByTagName("mechanism");
                if (register.length === 0 && mechanisms.length === 0) {
                    conn._proto._no_auth_received(_callback);
                    return false;
                }
                if (register.length === 0) {
                    conn._changeConnectStatus(
                        Strophe.Status.REGIFAIL,
                        __('Sorry, the given provider does not support in band account registration. Please try with a different provider.')
                    );
                    return true;
                }
                // Send an IQ stanza to get all required data fields
                conn._addSysHandler(this.onRegistrationFields.bind(this), null, "iq", null, null);
                conn.send($iq({type: "get"}).c("query", {xmlns: Strophe.NS.REGISTER}).tree());
                return true;
            },

            onRegistrationFields: function (stanza) {
                /*  Handler for Registration Fields Request.
                 *
                 *  Parameters:
                 *    (XMLElement) elem - The query stanza.
                 */
                if (stanza.getElementsByTagName("query").length !== 1) {
                    converse.connection._changeConnectStatus(Strophe.Status.REGIFAIL, "unknown");
                    return false;
                }
                this.setFields(stanza);
                this.renderRegistrationForm(stanza);
                return false;
            },

            reset: function (settings) {
                var defaults = {
                    fields: {},
                    urls: [],
                    title: "",
                    instructions: "",
                    registered: false,
                    _registering: false,
                    domain: null,
                    form_type: null
                };
                _.extend(this, defaults);
                if (settings) {
                    _.extend(this, _.pick(settings, Object.keys(defaults)));
                }
            },

            onProviderChosen: function (ev) {
                /* Callback method that gets called when the user has chosen an
                 * XMPP provider.
                 *
                 * Parameters:
                 *      (Submit Event) ev - Form submission event.
                 */
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var $form = $(ev.target),
                    $domain_input = $form.find('input[name=domain]'),
                    domain = $domain_input.val(),
                    errors = false;
                if (!domain) {
                    $domain_input.addClass('error');
                    return;
                }
                $form.find('input[type=submit]').hide()
                    .after(converse.templates.registration_request({
                        cancel: __('Cancel'),
                        info_message: __('Requesting a registration form from the XMPP server')
                    }));
                $form.find('button.cancel').on('click', $.proxy(this.cancelRegistration, this));
                this.reset({
                    domain: Strophe.getDomainFromJid(domain),
                    _registering: true
                });
                converse.connection.connect(this.domain, "", $.proxy(this.onRegistering, this));
                return false;
            },

            giveFeedback: function (message, klass) {
                this.$('.reg-feedback').attr('class', 'reg-feedback').text(message);
                if (klass) {
                    $('.reg-feedback').addClass(klass);
                }
            },

            onRegistering: function (status, error) {
                var that;
                console.log('onRegistering');
                if (_.contains([
                            Strophe.Status.DISCONNECTED,
                            Strophe.Status.CONNFAIL,
                            Strophe.Status.REGIFAIL,
                            Strophe.Status.NOTACCEPTABLE,
                            Strophe.Status.CONFLICT
                        ], status)) {

                    converse.log('Problem during registration: Strophe.Status is: '+status);
                    this.cancelRegistration();
                    if (error) {
                        this.giveFeedback(error, 'error');
                    } else {
                        this.giveFeedback(__(
                                'Something went wrong while establishing a connection with "%1$s". Are you sure it exists?',
                                this.domain
                            ), 'error');
                    }
                } else if (status == Strophe.Status.REGISTERED) {
                    converse.log("Registered successfully.");
                    converse.connection.reset();
                    that = this;
                    this.$('form').hide(function () {
                        $(this).replaceWith('<span class="spinner centered"/>');
                        if (that.fields.password && that.fields.username) {
                            // automatically log the user in
                            converse.connection.connect(
                                that.fields.username+'@'+that.domain,
                                that.fields.password,
                                converse.onConnect
                            );
                            converse.chatboxviews.get('controlbox')
                                .switchTab({target: that.$tabs.find('.current')})
                                .giveFeedback(__('Now logging you in'));
                        } else {
                            converse.chatboxviews.get('controlbox')
                                .renderLoginPanel()
                                .giveFeedback(__('Registered successfully'));
                        }
                        that.reset();
                    });
                }
            },

            renderRegistrationForm: function (stanza) {
                /* Renders the registration form based on the XForm fields
                 * received from the XMPP server.
                 *
                 * Parameters:
                 *      (XMLElement) stanza - The IQ stanza received from the XMPP server.
                 */
                var $form= this.$('form'),
                    $stanza = $(stanza),
                    $fields;
                $form.empty().append(converse.templates.registration_form({
                    'domain': this.domain,
                    'title': this.title,
                    'instructions': this.instructions
                }));
                if (this.form_type == 'xform') {
                    $fields = $stanza.find('field');
                    _.each($fields, $.proxy(function (field) {
                        $form.append(utils.xForm2webForm.bind(this, $(field), $stanza));
                    }, this));
                } else {
                    // Show fields
                    _.each(Object.keys(this.fields), $.proxy(function (key) {
                        $form.append('<label>'+key+'</label>');
                        var $input = $('<input placeholder="'+key+'" name="'+key+'"></input>');
                        if (key === 'password' || key === 'email') {
                            $input.attr('type', key);
                        }
                        $form.append($input);
                    }, this));
                    // Show urls
                    _.each(this.urls, $.proxy(function (url) {
                        $form.append($('<a target="blank"></a>').attr('href', url).text(url));
                    }, this));
                }
                if (this.fields) {
                    $form.append('<input type="submit" class="save-submit" value="'+__('Register')+'"/>');
                    $form.on('submit', $.proxy(this.submitRegistrationForm, this));
                    $form.append('<input type="button" class="cancel-submit" value="'+__('Cancel')+'"/>');
                    $form.find('input[type=button]').on('click', $.proxy(this.cancelRegistration, this));
                } else {
                    $form.append('<input type="button" class="submit" value="'+__('Return')+'"/>');
                    $form.find('input[type=button]').on('click', $.proxy(this.cancelRegistration, this));
                }
            },

            reportErrors: function (stanza) {
                /* Report back to the user any error messages received from the
                 * XMPP server after attempted registration.
                 *
                 * Parameters:
                 *      (XMLElement) stanza - The IQ stanza received from the
                 *      XMPP server.
                 */
                var $form= this.$('form'), flash;
                var $errmsgs = $(stanza).find('error text');
                var $flash = $form.find('.form-errors');
                if (!$flash.length) {
                   flash = '<legend class="form-errors"></legend>';
                    if ($form.find('p.instructions').length) {
                        $form.find('p.instructions').append(flash);
                    } else {
                        $form.prepend(flash);
                    }
                    $flash = $form.find('.form-errors');
                } else {
                    $flash.empty();
                }
                $errmsgs.each(function (idx, txt) {
                    $flash.append($('<p>').text($(txt).text()));
                });
                if (!$errmsgs.length) {
                    $flash.append($('<p>').text(
                        __('The provider rejected your registration attempt. '+
                           'Please check the values you entered for correctness.')));
                }
                $flash.show();
            },

            cancelRegistration: function (ev) {
                /* Handler, when the user cancels the registration form.
                 */
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                converse.connection.reset();
                this.render();
            },

            submitRegistrationForm : function (ev) {
                /* Handler, when the user submits the registration form.
                 * Provides form error feedback or starts the registration
                 * process.
                 *
                 * Parameters:
                 *      (Event) ev - the submit event.
                 */
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var $empty_inputs = this.$('input.required:emptyVal');
                if ($empty_inputs.length) {
                    $empty_inputs.addClass('error');
                    return;
                }
                var $inputs = $(ev.target).find(':input:not([type=button]):not([type=submit])'),
                    iq = $iq({type: "set"})
                        .c("query", {xmlns:Strophe.NS.REGISTER})
                        .c("x", {xmlns: Strophe.NS.XFORM, type: 'submit'});

                $inputs.each(function () {
                    iq.cnode(utils.webForm2xForm(this)).up();
                });
                converse.connection._addSysHandler(this._onRegisterIQ.bind(this), null, "iq", null, null);
                converse.connection.send(iq);
                this.setFields(iq.tree());
            },

            setFields: function (stanza) {
                /* Stores the values that will be sent to the XMPP server
                 * during attempted registration.
                 *
                 * Parameters:
                 *      (XMLElement) stanza - the IQ stanza that will be sent to the XMPP server.
                 */
                var $query = $(stanza).find('query'), $xform;
                if ($query.length > 0) {
                    $xform = $query.find('x[xmlns="'+Strophe.NS.XFORM+'"]');
                    if ($xform.length > 0) {
                        this._setFieldsFromXForm($xform);
                    } else {
                        this._setFieldsFromLegacy($query);
                    }
                }
            },

            _setFieldsFromLegacy: function ($query) {
                $query.children().each($.proxy(function (idx, field) {
                    var $field = $(field);
                    if (field.tagName.toLowerCase() === 'instructions') {
                        this.instructions = Strophe.getText(field);
                        return;
                    } else if (field.tagName.toLowerCase() === 'x') {
                        if ($field.attr('xmlns') === 'jabber:x:oob') {
                            $field.find('url').each($.proxy(function (idx, url) {
                                this.urls.push($(url).text());
                            }, this));
                        }
                        return;
                    }
                    this.fields[field.tagName.toLowerCase()] = Strophe.getText(field);
                }, this));
                this.form_type = 'legacy';
            },

            _setFieldsFromXForm: function ($xform) {
                this.title = $xform.find('title').text();
                this.instructions = $xform.find('instructions').text();
                $xform.find('field').each($.proxy(function (idx, field) {
                    var _var = field.getAttribute('var');
                    if (_var) {
                        this.fields[_var.toLowerCase()] = $(field).children('value').text();
                    } else {
                        // TODO: other option seems to be type="fixed"
                        console.log("WARNING: Found field we couldn't parse");
                    }
                }, this));
                this.form_type = 'xform';
            },

            _onRegisterIQ: function (stanza) {
                /* Callback method that gets called when a return IQ stanza
                 * is received from the XMPP server, after attempting to
                 * register a new user.
                 *
                 * Parameters:
                 *      (XMLElement) stanza - The IQ stanza.
                 */
                var i, field, error = null, that,
                    query = stanza.getElementsByTagName("query");
                if (query.length > 0) {
                    query = query[0];
                }
                if (stanza.getAttribute("type") === "error") {
                    converse.log("Registration failed.");
                    error = stanza.getElementsByTagName("error");
                    if (error.length !== 1) {
                        converse.connection._changeConnectStatus(Strophe.Status.REGIFAIL, "unknown");
                        return false;
                    }
                    error = error[0].firstChild.tagName.toLowerCase();
                    if (error === 'conflict') {
                        converse.connection._changeConnectStatus(Strophe.Status.CONFLICT, error);
                    } else if (error === 'not-acceptable') {
                        converse.connection._changeConnectStatus(Strophe.Status.NOTACCEPTABLE, error);
                    } else {
                        converse.connection._changeConnectStatus(Strophe.Status.REGIFAIL, error);
                    }
                    this.reportErrors(stanza);
                } else {
                    converse.connection._changeConnectStatus(Strophe.Status.REGISTERED, null);
                }
                return false;
            },

            remove: function () {
                this.$tabs.empty();
                this.$el.parent().empty();
            }
        });

        this.LoginPanel = Backbone.View.extend({
            tagName: 'div',
            id: "login-dialog",
            className: 'controlbox-pane',
            events: {
                'submit form#converse-login': 'authenticate'
            },

            initialize: function (cfg) {
                cfg.$parent.html(this.$el.html(
                    converse.templates.login_panel({
                        'label_username': __('XMPP Username:'),
                        'label_password': __('Password:'),
                        'label_login': __('Log In')
                    })
                ));
                this.$tabs = cfg.$parent.parent().find('#controlbox-tabs');
            },

            render: function () {
                this.$tabs.append(converse.templates.login_tab({label_sign_in: __('Sign in')}));
                this.$el.find('input#jid').focus();
                if (!this.$el.is(':visible')) {
                    this.$el.show();
                }
                return this;
            },

            authenticate: function (ev) {
                if (ev && ev.preventDefault) { ev.preventDefault(); }
                var $form = $(ev.target),
                    $jid_input = $form.find('input[name=jid]'),
                    jid = $jid_input.val(),
                    $pw_input = $form.find('input[name=password]'),
                    password = $pw_input.val(),
                    $bsu_input = null,
                    errors = false;

                if (! converse.bosh_service_url) {
                    $bsu_input = $form.find('input#bosh_service_url');
                    converse.bosh_service_url = $bsu_input.val();
                    if (! converse.bosh_service_url)  {
                        errors = true;
                        $bsu_input.addClass('error');
                    }
                }
                if (! jid) {
                    errors = true;
                    $jid_input.addClass('error');
                }
                if (! password)  {
                    errors = true;
                    $pw_input.addClass('error');
                }
                if (errors) { return; }
                this.connect($form, jid, password);
                return false;
            },

            connect: function ($form, jid, password) {
                if ($form) {
                    $form.find('input[type=submit]').hide().after('<span class="spinner login-submit"/>');
                }
                var resource = Strophe.getResourceFromJid(jid);
                if (!resource) {
                    jid += '/converse.js-' + Math.floor(Math.random()*139749825).toString();
                }
                converse.connection.connect(jid, password, converse.onConnect);
            },

            remove: function () {
                this.$tabs.empty();
                this.$el.parent().empty();
            }
        });

        this.ControlBoxToggle = Backbone.View.extend({
            tagName: 'a',
            className: 'toggle-controlbox',
            id: 'toggle-controlbox',
            events: {
                'click': 'onClick'
            },
            attributes: {
                'href': "#"
            },

            initialize: function () {
                this.render();
            },

            render: function () {
                $('#conversejs').prepend(this.$el.html(
                    converse.templates.controlbox_toggle({
                        'label_toggle': __('Toggle chat')
                    })
                ));
                // We let the render method of ControlBoxView decide whether
                // the ControlBox or the Toggle must be shown. This prevents
                // artifacts (i.e. on page load the toggle is shown only to then
                // seconds later be hidden in favor of the control box).
                this.$el.hide();
                return this;
            },

            hide: function (callback) {
                this.$el.fadeOut('fast', callback);
            },

            show: function (callback) {
                this.$el.show('fast', callback);
            },

            showControlBox: function () {
                var controlbox = converse.chatboxes.get('controlbox');
                if (!controlbox) {
                    controlbox = converse.addControlBox();
                }
                if (converse.connection.connected) {
                    controlbox.save({closed: false});
                } else {
                    controlbox.trigger('show');
                }
            },

            onClick: function (e) {
                e.preventDefault();
                if ($("div#controlbox").is(':visible')) {
                    var controlbox = converse.chatboxes.get('controlbox');
                    if (converse.connection.connected) {
                        controlbox.save({closed: true});
                    } else {
                        controlbox.trigger('hide');
                    }
                } else {
                    this.showControlBox();
                }
            }
        });

        this.addControlBox = function () {
            return this.chatboxes.add({
                id: 'controlbox',
                box_id: 'controlbox',
                height: this.default_box_height,
                closed: !this.show_controlbox_by_default
            });
        };

        this.setUpXMLLogging = function () {
            if (this.debug) {
                this.connection.xmlInput = function (body) { console.log(body); };
                this.connection.xmlOutput = function (body) { console.log(body); };
            }
        };

        this.initConnection = function () {
            var rid, sid, jid;
            if (this.connection && this.connection.connected) {
                this.setUpXMLLogging();
                this.onConnected();
            } else {
                // XXX: it's not yet clear what the order of preference should
                // be between RID and SID received via the initialize method or
                // those received from sessionStorage.
                //
                // What do you we if we receive values from both avenues?
                //
                // Also, what do we do when the keepalive session values are
                // expired? Do we try to fall back?
                if (!this.bosh_service_url && ! this.websocket_url) {
                    throw("Error: you must supply a value for the bosh_service_url or websocket_url");
                }
                if (('WebSocket' in window || 'MozWebSocket' in window) && this.websocket_url) {
                    this.connection = new Strophe.Connection(this.websocket_url);
                } else if (this.bosh_service_url) {
                    this.connection = new Strophe.Connection(this.bosh_service_url);
                } else {
                    throw("Error: this browser does not support websockets and no bosh_service_url specified.");
                }
                this.setUpXMLLogging();

                if (this.prebind) {
                    if (this.jid && this.sid && this.rid) {
                        this.connection.attach(this.jid, this.sid, this.rid, this.onConnect);
                    }
                    if (!this.keepalive) {
                        throw("If you use prebind and don't use keepalive, "+
                              "then you MUST supply JID, RID and SID values");
                    }
                }
                if (this.keepalive) {
                    rid = this.session.get('rid');
                    sid = this.session.get('sid');
                    jid = this.session.get('jid');
                    if (rid && jid && sid) {
                        // The RID needs to be increased with each request.
                        this.session.save({rid: rid});
                        this.connection.attach(jid, sid, rid, this.onConnect);
                    } else if (this.prebind) {
                        if (this.prebind_url) {
                            $.ajax({
                                url:  this.prebind_url,
                                type: 'GET',
                                success: function (response) {
                                    this.session.save({rid: rid});
                                    this.connection.attach(
                                            response.jid,
                                            response.sid,
                                            response.rid,
                                            this.onConnect
                                    );
                                }.bind(this),
                                error: function (response) {
                                    delete this.connection;
                                    this.emit('noResumeableSession');
                                }.bind(this)
                            });
                        } else {
                            delete this.connection;
                            this.emit('noResumeableSession');
                        }
                    }
                }
            }
        };

        this._tearDown = function () {
            /* Remove those views which are only allowed with a valid
             * connection.
             */
            this.initial_presence_sent = false;
            if (this.roster) {
                this.roster.off().reset(); // Removes roster contacts
            }
            this.connection.roster._callbacks = []; // Remove all Roster handlers (e.g. rosterHandler)
            if (this.rosterview) {
                this.rosterview.model.off().reset(); // Removes roster groups
                this.rosterview.undelegateEvents().remove();
            }
            this.chatboxes.remove(); // Don't call off(), events won't get re-registered upon reconnect.
            if (this.features) {
                this.features.reset();
            }
            if (this.minimized_chats) {
                this.minimized_chats.undelegateEvents().model.reset();
                this.minimized_chats.removeAll(); // Remove sub-views
                this.minimized_chats.tearDown().remove(); // Remove overview
                delete this.minimized_chats;
            }
            return this;
        };

        this._initialize = function () {
            this.chatboxes = new this.ChatBoxes();
            this.chatboxviews = new this.ChatBoxViews({model: this.chatboxes});
            this.controlboxtoggle = new this.ControlBoxToggle();
            this.otr = new this.OTR();
            this.initSession();
            this.initConnection();
            if (this.connection) {
                this.addControlBox();
            }
            return this;
        };

        this._initializePlugins = function () {
            _.each(this.plugins, $.proxy(function (plugin) {
                $.proxy(plugin, this)(this);
            }, this));
        };

        // Initialization
        // --------------
        // This is the end of the initialize method.
        if (settings.connection) {
            this.connection = settings.connection;
        }
        this._initializePlugins();
        this._initialize();
        this.registerGlobalEventHandlers();
        converse.emit('initialized');
    };

    var wrappedChatBox = function (chatbox) {
        var view = converse.chatboxviews.get(chatbox.get('jid'));
        return {
            'close': $.proxy(view.close, view),
            'endOTR': $.proxy(chatbox.endOTR, chatbox),
            'focus': $.proxy(view.focus, view),
            'get': $.proxy(chatbox.get, chatbox),
            'initiateOTR': $.proxy(chatbox.initiateOTR, chatbox),
            'maximize': $.proxy(chatbox.maximize, chatbox),
            'minimize': $.proxy(chatbox.minimize, chatbox),
            'set': $.proxy(chatbox.set, chatbox)
        };
    };
    return {
        'initialize': function (settings, callback) {
            converse.initialize(settings, callback);
        },
        'settings': {
            'get': function (key) {
                if (_.contains(Object.keys(converse.default_settings), key)) {
                    return converse[key];
                }
            },
            'set': function (key, val) {
                var o = {};
                if (typeof key === "object") {
                    _.extend(converse, _.pick(key, Object.keys(converse.default_settings)));
                } else if (typeof key === "string") {
                    o[key] = val;
                    _.extend(converse, _.pick(o, Object.keys(converse.default_settings)));
                }
            }
        },
        'contacts': {
            'get': function (jids) {
                var _transform = function (jid) {
                    var contact = converse.roster.get(Strophe.getBareJidFromJid(jid));
                    if (contact) {
                        return contact.attributes;
                    }
                    return null;
                };
                if (typeof jids === "undefined") {
                    jids = converse.roster.pluck('jid');
                } else if (typeof jids === "string") {
                    return _transform(jids);
                }
                return _.map(jids, _transform);
            }
        },
        'chats': {
            'open': function (jids) {
                var _transform = function (jid) {
                    var chatbox = converse.chatboxes.get(jid);
                    if (!chatbox) {
                        var roster_item = converse.roster.get(jid);
                        if (roster_item === undefined) {
                            converse.log('Could not get roster item for JID '+jid, 'error');
                            return null;
                        }
                        chatbox = converse.chatboxes.create({
                            'id': jid,
                            'jid': jid,
                            'fullname': _.isEmpty(roster_item.get('fullname'))? jid: roster_item.get('fullname'),
                            'image_type': roster_item.get('image_type'),
                            'image': roster_item.get('image'),
                            'url': roster_item.get('url')
                        });
                    }
                    return wrappedChatBox(chatbox);
                };
                if (typeof jids === "undefined") {
                    converse.log("chats.open: You need to provide at least one JID", "error");
                    return null;
                } else if (typeof jids === "string") {
                    return _transform(jids);
                }
                return _.map(jids, _transform);
            },
            'get': function (jids) {
                var _transform = function (jid) {
                    var chatbox = converse.chatboxes.get(jid);
                    if (!chatbox) {
                        return null;
                    }
                    return wrappedChatBox(chatbox);
                };
                if (typeof jids === "undefined") {
                    jids = converse.roster.pluck('jid');
                } else if (typeof jids === "string") {
                    return _transform(jids);
                }
                return _.filter(_.map(jids, _transform), function (i) {return i !== null;});
            }
        },
        'tokens': {
            'get': function (id) {
                if (!converse.expose_rid_and_sid || typeof converse.connection === "undefined") {
                    return null;
                }
                if (id.toLowerCase() === 'rid') {
                    return converse.connection.rid || converse.connection._proto.rid;
                } else if (id.toLowerCase() === 'sid') {
                    return converse.connection.sid || converse.connection._proto.sid;
                }
            }
        },
        'listen': {
            'once': function (evt, handler) {
                converse.once(evt, handler);
            },
            'on': function (evt, handler) {
                converse.on(evt, handler);
            },
            'not': function (evt, handler) {
                converse.off(evt, handler);
            },
        },
        'send': function (stanza) {
            converse.connection.send(stanza);
        },
        'plugins': {
            'add': function (name, callback) {
                converse.plugins[name] = callback;
            },
            'remove': function (name) {
                delete converse.plugins[name];
            },
            'extend': function (obj, attributes) {
                /* Helper method for overriding or extending Converse's Backbone Views or Models
                *
                * When a method is overriden, the original will still be available
                * on the _super attribute of the object being overridden.
                *
                * obj: The Backbone View or Model
                * attributes: A hash of attributes, such as you would pass to Backbone.Model.extend or Backbone.View.extend
                */
                if (!obj.prototype._super) {
                    obj.prototype._super = {};
                }
                _.each(attributes, function (value, key) {
                    if (key === 'events') {
                        obj.prototype[key] = _.extend(value, obj.prototype[key]);
                    } else {
                        if (typeof key === 'function') {
                            obj.prototype._super[key] = obj.prototype[key];
                        }
                        obj.prototype[key] = value;
                    }
                });
            }
        },
        'env': {
            'jQuery': $,
            'Strophe': Strophe,
            '$build': $build,
            '$iq': $iq,
            '$pres': $pres,
            '$msg': $msg,
            '_': _,
            'b64_sha1':  b64_sha1
        }
    };
}));

var config;
if (typeof(require) === 'undefined') {
    /* XXX: Hack to work around r.js's stupid parsing.
     * We want to save the configuration in a variable so that we can reuse it in
     * tests/main.js.
     */
    require = {
        config: function (c) {
            config = c;
        }
    };
}

require.config({
    baseUrl: '.',
    paths: {
        "backbone":                 "components/backbone/backbone",
        "backbone.browserStorage":  "components/backbone.browserStorage/backbone.browserStorage",
        "backbone.overview":        "components/backbone.overview/backbone.overview",
        "bootstrap":                "components/bootstrap/dist/js/bootstrap",           // XXX: Only required for https://conversejs.org website
        "bootstrapJS":              "components/bootstrapJS/index",                     // XXX: Only required for https://conversejs.org website
        "converse-dependencies":    "src/deps-website",
        "converse-templates":       "src/templates",
        "eventemitter":             "components/otr/build/dep/eventemitter",
        "jquery":                   "components/jquery/dist/jquery",
        "jquery-private":           "src/jquery-private",
        "jquery.browser":           "components/jquery.browser/dist/jquery.browser",
        "jquery.easing":            "components/jquery-easing-original/index",          // XXX: Only required for https://conversejs.org website
        "moment":                   "components/momentjs/moment",
        "strophe-base64":           "components/strophejs/src/base64",
        "strophe-bosh":             "components/strophejs/src/bosh",
        "strophe-core":             "components/strophejs/src/core",
        "strophe":                  "components/strophejs/src/wrapper",
        "strophe-md5":              "components/strophejs/src/md5",
        "strophe-sha1":             "components/strophejs/src/sha1",
        "strophe-websocket":        "components/strophejs/src/websocket",
        "strophe-polyfill":         "components/strophejs/src/polyfills",
        "strophe.disco":            "components/strophejs-plugins/disco/strophe.disco",
        "strophe.roster":           "src/strophe.roster",
        "strophe.vcard":            "src/strophe.vcard",
        "text":                     'components/requirejs-text/text',
        "tpl":                      'components/requirejs-tpl-jcbrand/tpl',
        "typeahead":                "components/typeahead.js/index",
        "underscore":               "components/underscore/underscore",
        "utils":                    "src/utils",

        // Off-the-record-encryption
        "bigint":               "src/bigint",
        "crypto":               "src/crypto",
        "crypto.aes":           "components/otr/vendor/cryptojs/aes",
        "crypto.cipher-core":   "components/otr/vendor/cryptojs/cipher-core",
        "crypto.core":          "components/otr/vendor/cryptojs/core",
        "crypto.enc-base64":    "components/otr/vendor/cryptojs/enc-base64",
        "crypto.evpkdf":        "components/crypto-js-evanvosberg/src/evpkdf",
        "crypto.hmac":          "components/otr/vendor/cryptojs/hmac",
        "crypto.md5":           "components/crypto-js-evanvosberg/src/md5",
        "crypto.mode-ctr":      "components/otr/vendor/cryptojs/mode-ctr",
        "crypto.pad-nopadding": "components/otr/vendor/cryptojs/pad-nopadding",
        "crypto.sha1":         "components/otr/vendor/cryptojs/sha1",
        "crypto.sha256":        "components/otr/vendor/cryptojs/sha256",
        "salsa20":              "components/otr/build/dep/salsa20",
        "otr":                  "src/otr",

        // Locales paths
        "locales":   "src/locales",
        "jed":       "components/jed/jed",
        "af":        "locale/af/LC_MESSAGES/converse.json",
        "de":        "locale/de/LC_MESSAGES/converse.json",
        "en":        "locale/en/LC_MESSAGES/converse.json",
        "es":        "locale/es/LC_MESSAGES/converse.json",
        "fr":        "locale/fr/LC_MESSAGES/converse.json",
        "he":        "locale/he/LC_MESSAGES/converse.json",
        "hu":        "locale/hu/LC_MESSAGES/converse.json",
        "id":        "locale/id/LC_MESSAGES/converse.json",
        "it":        "locale/it/LC_MESSAGES/converse.json",
        "ja":        "locale/ja/LC_MESSAGES/converse.json",
        "nb":        "locale/nb/LC_MESSAGES/converse.json",
        "nl":        "locale/nl/LC_MESSAGES/converse.json",
        "pl":        "locale/pl/LC_MESSAGES/converse.json",
        "pt_BR":     "locale/pt_BR/LC_MESSAGES/converse.json",
        "ru":        "locale/ru/LC_MESSAGES/converse.json",
        "zh":        "locale/zh/LC_MESSAGES/converse.json",

        // Templates
        "action":                   "src/templates/action",
        "add_contact_dropdown":     "src/templates/add_contact_dropdown",
        "add_contact_form":         "src/templates/add_contact_form",
        "change_status_message":    "src/templates/change_status_message",
        "chat_status":              "src/templates/chat_status",
        "chatarea":                 "src/templates/chatarea",
        "chatbox":                  "src/templates/chatbox",
        "chatroom":                 "src/templates/chatroom",
        "chatroom_password_form":   "src/templates/chatroom_password_form",
        "chatroom_sidebar":         "src/templates/chatroom_sidebar",
        "chatrooms_tab":            "src/templates/chatrooms_tab",
        "chats_panel":              "src/templates/chats_panel",
        "choose_status":            "src/templates/choose_status",
        "contacts_panel":           "src/templates/contacts_panel",
        "contacts_tab":             "src/templates/contacts_tab",
        "controlbox":               "src/templates/controlbox",
        "controlbox_toggle":        "src/templates/controlbox_toggle",
        "field":                    "src/templates/field",
        "form_captcha":             "src/templates/form_captcha",
        "form_checkbox":            "src/templates/form_checkbox",
        "form_input":               "src/templates/form_input",
        "form_select":              "src/templates/form_select",
        "form_textarea":            "src/templates/form_textarea",
        "form_username":            "src/templates/form_username",
        "group_header":             "src/templates/group_header",
        "info":                     "src/templates/info",
        "login_panel":              "src/templates/login_panel",
        "login_tab":                "src/templates/login_tab",
        "message":                  "src/templates/message",
        "new_day":                  "src/templates/new_day",
        "occupant":                 "src/templates/occupant",
        "pending_contact":          "src/templates/pending_contact",
        "pending_contacts":         "src/templates/pending_contacts",
        "register_panel":           "src/templates/register_panel",
        "register_tab":             "src/templates/register_tab",
        "registration_form":        "src/templates/registration_form",
        "registration_request":     "src/templates/registration_request",
        "requesting_contact":       "src/templates/requesting_contact",
        "requesting_contacts":      "src/templates/requesting_contacts",
        "room_description":         "src/templates/room_description",
        "room_item":                "src/templates/room_item",
        "room_panel":               "src/templates/room_panel",
        "roster":                   "src/templates/roster",
        "roster_item":              "src/templates/roster_item",
        "search_contact":           "src/templates/search_contact",
        "select_option":            "src/templates/select_option",
        "status_option":            "src/templates/status_option",
        "toggle_chats":             "src/templates/toggle_chats",
        "toolbar":                  "src/templates/toolbar",
        "trimmed_chat":             "src/templates/trimmed_chat"
    },

    map: {
        // '*' means all modules will get 'jquery-private'
        // for their 'jquery' dependency.
        '*': { 'jquery': 'jquery-private' },
        // 'jquery-private' wants the real jQuery module
        // though. If this line was not here, there would
        // be an unresolvable cyclic dependency.
        'jquery-private': { 'jquery': 'jquery' }
    },

    tpl: {
        // Configuration for requirejs-tpl
        // Use Mustache style syntax for variable interpolation
        templateSettings: {
            evaluate : /\{\[([\s\S]+?)\]\}/g,
            interpolate : /\{\{([\s\S]+?)\}\}/g
        }
    },

    // define module dependencies for modules not using define
    shim: {
        'underscore':           { exports: '_' },
        'crypto.aes':           { deps: ['crypto.cipher-core'] },
        'crypto.cipher-core':   { deps: ['crypto.enc-base64', 'crypto.evpkdf'] },
        'crypto.enc-base64':    { deps: ['crypto.core'] },
        'crypto.evpkdf':        { deps: ['crypto.md5'] },
        'crypto.hmac':          { deps: ['crypto.core'] },
        'crypto.md5':           { deps: ['crypto.core'] },
        'crypto.mode-ctr':      { deps: ['crypto.cipher-core'] },
        'crypto.pad-nopadding': { deps: ['crypto.cipher-core'] },
        'crypto.sha1':          { deps: ['crypto.core'] },
        'crypto.sha256':        { deps: ['crypto.core'] },
        'bigint':               { deps: ['crypto'] },
        'strophe.disco':        { deps: ['strophe'] },
        'strophe.register':     { deps: ['strophe'] },
        'strophe.roster':       { deps: ['strophe'] },
        'strophe.vcard':        { deps: ['strophe'] }
    }
});

if (typeof(require) === 'function') {
    require(["converse"], function(converse) {
        window.converse = converse;
    });
}
;
define("main", function(){});