Fixed Bug: IE fires onbeforeunload event

select2.js

@@ -1333,7 +1333,7 @@
             var container = $("<div></div>", {
                 "class": "select2-container"
             }).html([
-                "    <a href='javascript:void(0)' class='select2-choice'>",
+                "    <a href='#' onclick='return false;' class='select2-choice'>",
                 "   <span></span><abbr class='select2-search-choice-close' style='display:none;'></abbr>",
                 "   <div><b></b></div>" ,
                 "</a>",