diff --git a/app/inc/smarty.php b/app/inc/smarty.php
index 90afe4b..96f57ac 100644
--- a/app/inc/smarty.php
+++ b/app/inc/smarty.php
@@ -75,3 +75,29 @@ function smarty_modifier_addslashes_single_quote($string) {
 function smarty_modifier_html($html) {
     return Utils::htmlEscape($html);
 }
+
+function smarty_modifier_datepicker_path($lang) {
+    $i = 0;
+    while (!is_file(path_for_datepicker_locale($lang)) && $i < 3) {
+        $lang_arr = explode('-', $lang);
+        if ($lang_arr && count($lang_arr) > 1) {
+            $lang = $lang_arr[0];
+        } else {
+            $lang = 'en';
+        }
+        $i += 1;
+    }
+    return 'js/locales/bootstrap-datepicker.' . $lang . '.js';
+}
+
+function smarty_modifier_locale_2_lang($locale) {
+    $lang_arr = explode('-', $locale);
+    if ($lang_arr && count($lang_arr) > 1) {
+        return $lang_arr[0];
+    }
+    return $locale;
+}
+
+function path_for_datepicker_locale($lang) {
+    return __DIR__ . '/../../js/locales/bootstrap-datepicker.' . $lang . '.js';
+}
diff --git a/tpl/page.tpl b/tpl/page.tpl
index e307e59..f04705d 100644
--- a/tpl/page.tpl
+++ b/tpl/page.tpl
@@ -23,8 +23,8 @@
     <script type="text/javascript" src="{'js/jquery-1.12.4.min.js'|resource}"></script>
     <script type="text/javascript" src="{'js/bootstrap.min.js'|resource}"></script>
     <script type="text/javascript" src="{'js/bootstrap-datepicker.js'|resource}"></script>
-    {if "en" != $locale}
-    <script type="text/javascript" src="{"js/locales/bootstrap-datepicker.$locale.js"|resource}"></script>
+    {if 'en' != $locale}
+    <script type="text/javascript" src="{$locale|datepicker_path|resource}"></script>
     {/if}
     <script type="text/javascript" src="{'js/core.js'|resource}"></script>
 
diff --git a/tpl/part/description_markdown.tpl b/tpl/part/description_markdown.tpl
index e2bb823..7a407df 100644
--- a/tpl/part/description_markdown.tpl
+++ b/tpl/part/description_markdown.tpl
@@ -26,9 +26,9 @@
                     </p>
                     <p>
                         {__('Step 1', 'More informations here:')}
-                        <a href="http://{$locale}.wikipedia.org/wiki/Markdown">http://{$locale}.wikipedia.org/wiki/Markdown</a>
+                        <a href="http://{$locale|locale_2_lang}.wikipedia.org/wiki/Markdown">http://{$locale|locale_2_lang}.wikipedia.org/wiki/Markdown</a>
                     </p>
             </div>
         </div>
     </div>
-</div>
\ No newline at end of file
+</div>