agenda-libre-ruby/public/webshims/shims/picture.js

/*! respimage - v1.2.1 - 2014-12-23
 Licensed MIT */
!function(window, document, undefined) {
	"use strict";
	function trim(str) {
		return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, "");
	}
	function updateMetrics() {
		var dprM;
		isVwDirty = !1, DPR = window.devicePixelRatio, cssCache = {}, sizeLengthCache = {},
			dprM = (DPR || 1) * cfg.xQuant, cfg.uT || (cfg.maxX = Math.max(1.3, cfg.maxX), dprM = Math.min(dprM, cfg.maxX),
			ri.DPR = dprM), units.width = Math.max(window.innerWidth || 0, docElem.clientWidth),
			units.height = Math.max(window.innerHeight || 0, docElem.clientHeight), units.vw = units.width / 100,
			units.vh = units.height / 100, units.em = ri.getEmValue(), units.rem = units.em,
			lazyFactor = cfg.lazyFactor / 2, lazyFactor = lazyFactor * dprM + lazyFactor, substractCurRes = .1 * dprM,
			lowTreshHold = .5 + .2 * dprM, partialLowTreshHold = .5 + .25 * dprM, tMemory = dprM + 1.3,
		(isLandscape = units.width > units.height) || (lazyFactor *= .9), supportAbort && (lazyFactor *= .9);
	}
	function chooseLowRes(lowRes, diff, dpr) {
		var add = diff * Math.pow(lowRes, 2);
		return isLandscape || (add /= 1.3), lowRes += add, lowRes > dpr;
	}
	function inView(el) {
		if (!el.getBoundingClientRect) return !0;
		var bottom, right, left, top, rect = el.getBoundingClientRect();
		return !!((bottom = rect.bottom) >= -9 && (top = rect.top) <= units.height + 9 && (right = rect.right) >= -9 && (left = rect.left) <= units.height + 9 && (bottom || right || left || top));
	}
	function applyBestCandidate(img) {
		var srcSetCandidates, matchingSet = ri.getSet(img), evaluated = !1;
		"pending" != matchingSet && (evaluated = !0, matchingSet && (srcSetCandidates = ri.setRes(matchingSet),
			evaluated = ri.applySetCandidate(srcSetCandidates, img))), img[ri.ns].evaled = evaluated;
	}
	function ascendingSort(a, b) {
		return a.res - b.res;
	}
	function setSrcToCur(img, src, set) {
		var candidate;
		return !set && src && (set = img[ri.ns].sets, set = set && set[set.length - 1]),
			candidate = getCandidateForSrc(src, set), candidate && (src = ri.makeUrl(src), img[ri.ns].curSrc = src,
			img[ri.ns].curCan = candidate, candidate.res || setResolution(candidate, candidate.set.sizes)),
			candidate;
	}
	function getCandidateForSrc(src, set) {
		var i, candidate, candidates;
		if (src && set) for (candidates = ri.parseSet(set), src = ri.makeUrl(src), i = 0; i < candidates.length; i++) if (src == ri.makeUrl(candidates[i].url)) {
			candidate = candidates[i];
			break;
		}
		return candidate;
	}
	function getAllSourceElements(picture, candidates) {
		var i, len, source, srcset, sources = picture.getElementsByTagName("source");
		for (i = 0, len = sources.length; len > i; i++) source = sources[i], source[ri.ns] = !0,
			srcset = source.getAttribute("srcset"), srcset && candidates.push({
			srcset: srcset,
			media: source.getAttribute("media"),
			type: source.getAttribute("type"),
			sizes: source.getAttribute("sizes")
		});
	}
	document.createElement("picture");
	var lowTreshHold, partialLowTreshHold, isLandscape, lazyFactor, tMemory, substractCurRes, eminpx, alwaysCheckWDescriptor, resizeThrottle, ri = {}, noop = function() {}, image = document.createElement("img"), getImgAttr = image.getAttribute, setImgAttr = image.setAttribute, removeImgAttr = image.removeAttribute, docElem = document.documentElement, types = {}, cfg = {
		xQuant: 1,
		lazyFactor: .4,
		maxX: 2
	}, srcAttr = "data-risrc", srcsetAttr = srcAttr + "set", reflowBug = "webkitBackfaceVisibility" in docElem.style, ua = navigator.userAgent, supportNativeLQIP = /AppleWebKit/i.test(ua), supportAbort = /rident/.test(ua) || /ecko/.test(ua) && ua.match(/rv\:(\d+)/) && RegExp.$1 > 35, imgAbortCount = 0, curSrcProp = "currentSrc", regWDesc = /\s+\+?\d+(e\d+)?w/, regSize = /(\([^)]+\))?\s*(.+)/, regDescriptor = /^([\+eE\d\.]+)(w|x)$/, regHDesc = /\s*\d+h\s*/, setOptions = window.respimgCFG, baseStyle = ("https:" == location.protocol,
		"position:absolute;left:0;visibility:hidden;display:block;padding:0;border:none;font-size:1em;width:1em;overflow:hidden;clip:rect(0px, 0px, 0px, 0px)"), fsCss = "font-size:100%!important;", isVwDirty = !0, cssCache = {}, sizeLengthCache = {}, DPR = window.devicePixelRatio, units = {
		px: 1,
		"in": 96
	}, anchor = document.createElement("a"), alreadyRun = !1, on = function(obj, evt, fn, capture) {
		obj.addEventListener ? obj.addEventListener(evt, fn, capture || !1) : obj.attachEvent && obj.attachEvent("on" + evt, fn);
	}, off = function(obj, evt, fn, capture) {
		obj.removeEventListener ? obj.removeEventListener(evt, fn, capture || !1) : obj.detachEvent && obj.detachEvent("on" + evt, fn);
	}, memoize = function(fn) {
		var cache = {};
		return function(input) {
			return input in cache || (cache[input] = fn(input)), cache[input];
		};
	}, evalCSS = function() {
		var regLength = /^([\d\.]+)(em|vw|px)$/, replace = function() {
			for (var args = arguments, index = 0, string = args[0]; ++index in args; ) string = string.replace(args[index], args[++index]);
			return string;
		}, buidlStr = memoize(function(css) {
			return "return " + replace((css || "").toLowerCase(), /\band\b/g, "&&", /,/g, "||", /min-([a-z-\s]+):/g, "e.$1>=", /max-([a-z-\s]+):/g, "e.$1<=", /calc([^)]+)/g, "($1)", /(\d+[\.]*[\d]*)([a-z]+)/g, "($1 * e.$2)", /^(?!(e.[a-z]|[0-9\.&=|><\+\-\*\(\)\/])).*/gi, "");
		});
		return function(css, length) {
			var parsedLength;
			if (!(css in cssCache)) if (cssCache[css] = !1, length && (parsedLength = css.match(regLength))) cssCache[css] = parsedLength[1] * units[parsedLength[2]]; else try {
				cssCache[css] = new Function("e", buidlStr(css))(units);
			} catch (e) {}
			return cssCache[css];
		};
	}(), setResolution = function(candidate, sizesattr) {
		return candidate.w ? (candidate.cWidth = ri.calcListLength(sizesattr || "100vw"),
			candidate.res = candidate.w / candidate.cWidth) : candidate.res = candidate.x, candidate;
	}, respimage = function(opt) {
		var elements, i, plen, options = opt || {};
		if (options.elements && 1 == options.elements.nodeType && ("IMG" == options.elements.nodeName.toUpperCase() ? options.elements = [ options.elements ] : (options.context = options.elements,
				options.elements = null)), elements = options.elements || ri.qsa(options.context || document, options.reevaluate || options.reparse ? ri.sel : ri.selShort),
				plen = elements.length) {
			for (ri.setupRun(options), alreadyRun = !0, i = 0; plen > i; i++) imgAbortCount++,
			6 > imgAbortCount && !elements[i].complete && imgAbortCount++, ri.fillImg(elements[i], options);
			ri.teardownRun(options), imgAbortCount++;
		}
	}, reevaluateAfterLoad = function() {
		var onload = function() {
			off(this, "load", onload), off(this, "error", onload), ri.fillImgs({
				elements: [ this ]
			});
		};
		return function(img) {
			off(img, "load", onload), off(img, "error", onload), on(img, "error", onload), on(img, "load", onload);
		};
	}(), parseDescriptor = memoize(function(descriptor) {
		var descriptorObj = [ 1, "x" ], parsedDescriptor = trim(descriptor || "");
		return parsedDescriptor && (parsedDescriptor = parsedDescriptor.replace(regHDesc, ""),
			descriptorObj = parsedDescriptor.match(regDescriptor) ? [ 1 * RegExp.$1, RegExp.$2 ] : !1),
			descriptorObj;
	});
	curSrcProp in image || (curSrcProp = "src"), types["image/jpeg"] = !0, types["image/gif"] = !0,
		types["image/png"] = !0, types["image/svg+xml"] = document.implementation.hasFeature("http://wwwindow.w3.org/TR/SVG11/feature#Image", "1.1"),
		ri.ns = ("ri" + new Date().getTime()).substr(0, 9), ri.supSrcset = "srcset" in image,
		ri.supSizes = "sizes" in image, ri.selShort = "picture>img,img[srcset]", ri.sel = ri.selShort,
		ri.cfg = cfg, ri.supSrcset && (ri.sel += ",img[" + srcsetAttr + "]"), ri.DPR = DPR || 1,
		ri.u = units, ri.types = types, alwaysCheckWDescriptor = ri.supSrcset && !ri.supSizes,
		ri.setSize = noop, ri.makeUrl = memoize(function(src) {
		return anchor.href = src, anchor.href;
	}), ri.qsa = function(context, sel) {
		return context.querySelectorAll(sel);
	}, ri.matchesMedia = function() {
		return ri.matchesMedia = window.matchMedia && (matchMedia("(min-width: 0.1em)") || {}).matches ? function(media) {
			return !media || matchMedia(media).matches;
		} : ri.mMQ, ri.matchesMedia.apply(this, arguments);
	}, ri.mMQ = function(media) {
		return media ? evalCSS(media) : !0;
	}, ri.calcLength = function(sourceSizeValue) {
		var value = evalCSS(sourceSizeValue, !0) || !1;
		return 0 > value && (value = !1), value;
	}, ri.supportsType = function(type) {
		return type ? types[type] : !0;
	}, ri.parseSize = memoize(function(sourceSizeStr) {
		var match = (sourceSizeStr || "").match(regSize);
		return {
			media: match && match[1],
			length: match && match[2]
		};
	}), ri.parseSet = function(set) {
		if (!set.cands) {
			var pos, url, descriptor, last, descpos, can, srcset = set.srcset;
			for (set.cands = []; srcset; ) srcset = srcset.replace(/^\s+/g, ""), pos = srcset.search(/\s/g),
				descriptor = null, -1 != pos ? (url = srcset.slice(0, pos), last = url.charAt(url.length - 1),
			"," != last && url || (url = url.replace(/,+$/, ""), descriptor = ""), srcset = srcset.slice(pos + 1),
			null == descriptor && (descpos = srcset.indexOf(","), -1 != descpos ? (descriptor = srcset.slice(0, descpos),
				srcset = srcset.slice(descpos + 1)) : (descriptor = srcset, srcset = ""))) : (url = srcset,
				srcset = ""), url && (descriptor = parseDescriptor(descriptor)) && (can = {
				url: url.replace(/^,+/, ""),
				set: set
			}, can[descriptor[1]] = descriptor[0], "x" == descriptor[1] && 1 == descriptor[0] && (set.has1x = !0),
				set.cands.push(can));
		}
		return set.cands;
	}, ri.getEmValue = function() {
		var body;
		if (!eminpx && (body = document.body)) {
			var div = document.createElement("div"), originalHTMLCSS = docElem.style.cssText, originalBodyCSS = body.style.cssText;
			div.style.cssText = baseStyle, docElem.style.cssText = fsCss, body.style.cssText = fsCss,
				body.appendChild(div), eminpx = div.offsetWidth, body.removeChild(div), eminpx = parseFloat(eminpx, 10),
				docElem.style.cssText = originalHTMLCSS, body.style.cssText = originalBodyCSS;
		}
		return eminpx || 16;
	}, ri.calcListLength = function(sourceSizeListStr) {
		if (!(sourceSizeListStr in sizeLengthCache) || cfg.uT) {
			var sourceSize, parsedSize, length, media, i, len, sourceSizeList = trim(sourceSizeListStr).split(/\s*,\s*/), winningLength = !1;
			for (i = 0, len = sourceSizeList.length; len > i && (sourceSize = sourceSizeList[i],
				parsedSize = ri.parseSize(sourceSize), length = parsedSize.length, media = parsedSize.media,
			!length || !ri.matchesMedia(media) || (winningLength = ri.calcLength(length)) === !1); i++) ;
			sizeLengthCache[sourceSizeListStr] = winningLength ? winningLength : units.width;
		}
		return sizeLengthCache[sourceSizeListStr];
	}, ri.setRes = function(set) {
		var candidates;
		if (set) {
			candidates = ri.parseSet(set);
			for (var i = 0, len = candidates.length; len > i; i++) setResolution(candidates[i], set.sizes);
		}
		return candidates;
	}, ri.setRes.res = setResolution, ri.applySetCandidate = function(candidates, img) {
		if (candidates.length) {
			var candidate, dpr, i, j, diff, length, bestCandidate, curSrc, curCan, isSameSet, candidateSrc, abortCurSrc, oldRes, imageData = img[ri.ns], evaled = !0, lazyF = lazyFactor, sub = substractCurRes;
			if (curSrc = imageData.curSrc || img[curSrcProp], curCan = imageData.curCan || setSrcToCur(img, curSrc, candidates[0].set),
					dpr = ri.DPR, oldRes = curCan && curCan.res, !bestCandidate && curSrc && (abortCurSrc = supportAbort && !img.complete && curCan && oldRes > dpr,
				abortCurSrc || curCan && !(tMemory > oldRes) || (curCan && dpr > oldRes && oldRes > lowTreshHold && (partialLowTreshHold > oldRes && (lazyF *= .87,
					sub += .04 * dpr), curCan.res += lazyF * Math.pow(oldRes - sub, 2)), isSameSet = !imageData.pic || curCan && curCan.set == candidates[0].set,
					curCan && isSameSet && curCan.res >= dpr ? bestCandidate = curCan : supportNativeLQIP || img.complete || !getImgAttr.call(img, "src") || img.lazyload || supportAbort && !(5 > imgAbortCount) || !isSameSet && inView(img) || (bestCandidate = curCan,
						candidateSrc = curSrc, evaled = "L", reevaluateAfterLoad(img)))), !bestCandidate) for (oldRes && (curCan.res = curCan.res - (curCan.res - oldRes) / 2),
																												   candidates.sort(ascendingSort), length = candidates.length, bestCandidate = candidates[length - 1],
																												   i = 0; length > i; i++) if (candidate = candidates[i], candidate.res >= dpr) {
				j = i - 1, bestCandidate = candidates[j] && (diff = candidate.res - dpr) && (abortCurSrc || curSrc != ri.makeUrl(candidate.url)) && chooseLowRes(candidates[j].res, diff, dpr) ? candidates[j] : candidate;
				break;
			}
			return oldRes && (curCan.res = oldRes), bestCandidate && (candidateSrc = ri.makeUrl(bestCandidate.url),
				imageData.curSrc = candidateSrc, imageData.curCan = bestCandidate, candidateSrc != curSrc && ri.setSrc(img, bestCandidate),
				ri.setSize(img)), evaled;
		}
	}, ri.setSrc = function(img, bestCandidate) {
		var origStyle;
		img.src = bestCandidate.url, reflowBug && (origStyle = img.style.zoom, img.style.zoom = "0.999",
			img.style.zoom = origStyle);
	}, ri.getSet = function(img) {
		var i, set, supportsType, match = !1, sets = img[ri.ns].sets;
		for (i = 0; i < sets.length && !match; i++) if (set = sets[i], set.srcset && ri.matchesMedia(set.media) && (supportsType = ri.supportsType(set.type))) {
			"pending" == supportsType && (set = supportsType), match = set;
			break;
		}
		return match;
	}, ri.parseSets = function(element, parent) {
		var srcsetAttribute, imageSet, isWDescripor, srcsetParsed, hasPicture = "PICTURE" == parent.nodeName.toUpperCase(), imageData = element[ri.ns];
		imageData.src === undefined && (imageData.src = getImgAttr.call(element, "src"),
			imageData.src ? setImgAttr.call(element, srcAttr, imageData.src) : removeImgAttr.call(element, srcAttr)),
		imageData.srcset === undefined && (srcsetAttribute = getImgAttr.call(element, "srcset"),
			imageData.srcset = srcsetAttribute, srcsetParsed = !0), imageData.sets = [], hasPicture && (imageData.pic = !0,
			getAllSourceElements(parent, imageData.sets)), imageData.srcset ? (imageSet = {
			srcset: imageData.srcset,
			sizes: getImgAttr.call(element, "sizes")
		}, imageData.sets.push(imageSet), isWDescripor = (alwaysCheckWDescriptor || imageData.src) && regWDesc.test(imageData.srcset || ""),
		isWDescripor || !imageData.src || getCandidateForSrc(imageData.src, imageSet) || imageSet.has1x || (imageSet.srcset += ", " + imageData.src,
			imageSet.cands.push({
				url: imageData.src,
				x: 1,
				set: imageSet
			}))) : imageData.src && imageData.sets.push({
			srcset: imageData.src,
			sizes: null
		}), imageData.curCan = null, imageData.supported = !(hasPicture || imageSet && !ri.supSrcset || isWDescripor),
		srcsetParsed && ri.supSrcset && !imageData.supported && (srcsetAttribute ? (setImgAttr.call(element, srcsetAttr, srcsetAttribute),
			element.srcset = "") : removeImgAttr.call(element, srcsetAttr)), imageData.supported && !imageData.srcset && (!imageData.src && element.src || element.src != ri.makeUrl(imageData.src)) && (null == imageData.src ? element.removeAttribute("src") : element.src = imageData.src),
			imageData.parsed = !0;
	}, ri.fillImg = function(element, options) {
		var parent, imageData, extreme = options.reparse || options.reevaluate;
		if (element[ri.ns] || (element[ri.ns] = {}), imageData = element[ri.ns], "L" == imageData.evaled && element.complete && (imageData.evaled = !1),
			extreme || !imageData.evaled) {
			if (!imageData.parsed || options.reparse) {
				if (parent = element.parentNode, !parent) return;
				ri.parseSets(element, parent, options);
			}
			imageData.supported ? imageData.evaled = !0 : applyBestCandidate(element);
		}
	}, ri.setupRun = function(options) {
		(!alreadyRun || options.reevaluate || isVwDirty) && (updateMetrics(), options.elements || options.context || clearTimeout(resizeThrottle));
	}, window.HTMLPictureElement ? (respimage = noop, ri.fillImg = noop) : !function() {
		var isDomReady, regReady = window.attachEvent ? /d$|^c/ : /d$|^c|^i/, run = function() {
			var readyState = document.readyState || "";
			timerId = setTimeout(run, "loading" == readyState ? 200 : 999), document.body && (isDomReady = isDomReady || regReady.test(readyState),
				ri.fillImgs(), isDomReady && (imgAbortCount += 6, clearTimeout(timerId)));
		}, resizeEval = function() {
			ri.fillImgs({
				reevaluate: !0
			});
		}, onResize = function() {
			clearTimeout(resizeThrottle), isVwDirty = !0, resizeThrottle = setTimeout(resizeEval, 99);
		}, timerId = setTimeout(run, document.body ? 9 : 99);
		on(window, "resize", onResize), on(document, "readystatechange", run);
	}(), ri.respimage = respimage, ri.fillImgs = respimage, ri.teardownRun = noop, respimage._ = ri,
		window.respimage = respimage, window.respimgCFG = {
		ri: ri,
		push: function(args) {
			var name = args.shift();
			"function" == typeof ri[name] ? ri[name].apply(ri, args) : (cfg[name] = args[0],
			alreadyRun && ri.fillImgs({
				reevaluate: !0
			}));
		}
	};
	for (;setOptions && setOptions.length; ) window.respimgCFG.push(setOptions.shift());
}(window, document);
(function( factory ) {
	"use strict";
	var interValId;
	var intervalIndex = 0;
	var run = function(){
		if ( window.respimage ) {
			factory( window.respimage );
		}
		if(window.respimage || intervalIndex > 9999){
			clearInterval(interValId);
		}
		intervalIndex++;
	};
	interValId = setInterval(run, 8);

	run();

}( function( respimage ) {
	"use strict";

	var ri = respimage._;
	var runningTests = 0;
	var setTypeValue = function(types, value){
		var i;
		for(i = 0; i < types.length; i++){
			ri.types[types[i]] = value;
		}
	};

	if(window.HTMLPictureElement && !ri.cfg.uT){
		respimage.testTypeSupport = function(){};
		return;
	}

	ri.types["image/bmp"] = true;
	ri.types["image/x-bmp"] = true;

	respimage.testTypeSupport = function(types, url, width, useCanvas){
		if(typeof types == "string"){
			types = types.split(/\s*\,*\s+/g);
		}
		var canvas;
		var supports = "pending";
		var img = document.createElement('img');
		var onComplete = function(){
			runningTests--;
			setTypeValue(types, supports);
			if(runningTests < 1){
				respimage({reevaluate: true});
			}
		};

		if(useCanvas){
			canvas = document.createElement('canvas');
			if(!canvas.getContext){
				setTypeValue(types, false);
				return;
			}
		}

		img.onload = function(){
			var ctx;
			supports = true;
			if(width){
				supports = img.width == width;
			}

			if(useCanvas){
				ctx = canvas.getContext('2d');
				ctx.drawImage(img, 0, 0);
				supports = ctx.getImageData(0, 0, 1, 1).data[3] === 0;
			}
			onComplete();
		};

		img.onerror = function(){
			supports = false;
			onComplete();
		};
		runningTests++;
		setTypeValue(types, "pending");
		img.src = url;
	};


	respimage.testTypeSupport("image/webp", "data:image/webp;base64,UklGRkoAAABXRUJQVlA4WAoAAAAQAAAAAAAAAAAAQUxQSAwAAAABBxAR/Q9ERP8DAABWUDggGAAAADABAJ0BKgEAAQADADQlpAADcAD++/1QAA==", 1);
	respimage.testTypeSupport("image/jp2 image/jpx image/jpm", "data:image/jp2;base64,/0//UQAyAAAAAAABAAAAAgAAAAAAAAAAAAAABAAAAAQAAAAAAAAAAAAEBwEBBwEBBwEBBwEB/1IADAAAAAEAAAQEAAH/XAAEQED/ZAAlAAFDcmVhdGVkIGJ5IE9wZW5KUEVHIHZlcnNpb24gMi4wLjD/kAAKAAAAAABYAAH/UwAJAQAABAQAAf9dAAUBQED/UwAJAgAABAQAAf9dAAUCQED/UwAJAwAABAQAAf9dAAUDQED/k8+kEAGvz6QQAa/PpBABr994EAk//9k=", 1);
	respimage.testTypeSupport("image/vnd.ms-photo", "data:image/vnd.ms-photo;base64,SUm8AQgAAAAFAAG8AQAQAAAASgAAAIC8BAABAAAAAQAAAIG8BAABAAAAAQAAAMC8BAABAAAAWgAAAMG8BAABAAAAHwAAAAAAAAAkw91vA07+S7GFPXd2jckNV01QSE9UTwAZAYBxAAAAABP/gAAEb/8AAQAAAQAAAA==", 1);
	respimage.testTypeSupport("video/png video/apng video/x-mng video/x-png", "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACGFjVEwAAAABAAAAAcMq2TYAAAANSURBVAiZY2BgYPgPAAEEAQB9ssjfAAAAGmZjVEwAAAAAAAAAAQAAAAEAAAAAAAAAAAD6A+gBAbNU+2sAAAARZmRBVAAAAAEImWNgYGBgAAAABQAB6MzFdgAAAABJRU5ErkJggg==", false, true);

}));

(function( factory ) {
	"use strict";
	var interValId;
	var intervalIndex = 0;
	var run = function(){
		if ( window.respimage ) {
			factory( window.respimage );
		}
		if(window.respimage || intervalIndex > 9999){
			clearInterval(interValId);
		}
		intervalIndex++;
	};
	interValId = setInterval(run, 8);

	run();

}( function( respimage, undefined ) {
	"use strict";

	var ri = respimage._;
	var knownWidths = {};
	var cfg = ri.cfg;
	var curSrcProp = "currentSrc";
	var setSize = function(width, img, data){
		var curCandidate = data.curCan;

		if ( width ) {
			img.setAttribute( "width", parseInt(width / curCandidate.res, 10) );
		}
	};
	var loadBg = function(url, img, data){
		var bgImg, curCandidate, clear;


		if(knownWidths[url]){
			setSize(knownWidths[url], img, data);
		} else {
			clear = function(){
				data.pendingURLSize = null;
				bgImg.onload = null;
				bgImg.onerror = null;
				img = null;
				bgImg = null;
			};

			data.pendingURLSize = url;
			curCandidate = data.curCan;

			if(curCandidate.w){
				setSize(curCandidate.w, img, data);
			}

			bgImg = document.createElement('img');

			bgImg.onload = function(){
				knownWidths[url] = bgImg.naturalWidth || bgImg.width;
				if(url == img[curSrcProp]){
					setSize(knownWidths[url], img, data);
				}
				clear();
			};
			bgImg.onerror = clear;

			bgImg.src = url;

			if(bgImg && bgImg.complete){
				bgImg.onload();
			}
		}

	};
	var reeval = (function(){
		var running, timer;

		var run = function(){
			var i, len, imgData;
			var imgs = document.getElementsByTagName('img');
			var options = {elements: []};

			ri.setupRun(options);

			running = false;
			clearTimeout(timer);

			for(i = 0, len = imgs.length; i < len; i++){
				imgData = imgs[i][ri.ns];

				if(imgData && imgData.curCan){
					ri.setRes.res(imgData.curCan, imgData.curCan.set.sizes);
					ri.setSize(imgs[i]);
				}
			}

			ri.teardownRun( options );
		};

		return function(){
			if(!running && cfg.addSize){
				running = true;
				clearTimeout(timer);
				timer = setTimeout(run);
			}
		};

	})();

	if( !(curSrcProp in document.createElement("img")) ){
		curSrcProp = "src";
	}

	ri.setSize = function( img ) {
		var url;
		var data = img[ ri.ns ];
		var curCandidate = data.curCan;

		if ( data.dims === undefined ) {
			data.dims = img.getAttribute( "height" ) && img.getAttribute( "width" );
		}

		if ( !cfg.addSize || !curCandidate || data.dims ) {return;}
		url = ri.makeUrl(curCandidate.url);

		if(url == img[curSrcProp] && url !== data.pendingURLSize){
			loadBg(url, img, data);
		}
	};


	if(window.addEventListener){
		addEventListener('resize', reeval, false);
	}

	if(!('addSize' in cfg)){
		cfg.addSize = true;
	} else {
		cfg.addSize = !!cfg.addSize;
	}

	reeval();
}));


(function(){

	webshim.isReady('picture', true);
	var sel = 'picture, img[srcset]';
	webshim.addReady(function(context){
		if(context.querySelector(sel)){
			window.respimage();
		}
	});
})();