jquery.ba-hashchange.min.js

/*
 * jQuery hashchange event - v1.3 - 7/21/2010
 * http://benalman.com/projects/jquery-hashchange-plugin/
 * 
 * Copyright (c) 2010 "Cowboy" Ben Alman
 * Dual licensed under the MIT and GPL licenses.
 * http://benalman.com/about/license/
 */
(function($,window,undefined){'$:nomunge';var str_hashchange='hashchange',doc=document,fake_onhashchange,special=$.event.special,doc_mode=doc.documentMode,supports_onhashchange='on'+str_hashchange in window&&(doc_mode===undefined||doc_mode>7);function get_fragment(url){url=url||location.href;var index=url.indexOf('#');return index===-1?'#':url.substr(index);};$.fn[str_hashchange]=function(fn){return fn?this.bind(str_hashchange,fn):this.trigger(str_hashchange);};$.fn[str_hashchange].delay=50;special[str_hashchange]=$.extend(special[str_hashchange],{setup:function(){if(supports_onhashchange){return false;}
$(fake_onhashchange.start);},teardown:function(){if(supports_onhashchange){return false;}
$(fake_onhashchange.stop);}});fake_onhashchange=(function(){var self={},timeout_id,last_hash=get_fragment(),fn_retval=function(val){return val;},history_set=fn_retval,history_get=fn_retval;self.start=function(){timeout_id||poll();};self.stop=function(){timeout_id&&clearTimeout(timeout_id);timeout_id=undefined;};function poll(){var hash=get_fragment(),history_hash=history_get(last_hash);if(hash!==last_hash){history_set(last_hash=hash,history_hash);$(window).trigger(str_hashchange);}else if(history_hash!==last_hash){location.href=location.href.replace(/#.*/,'')+history_hash;}
timeout_id=setTimeout(poll,$.fn[str_hashchange].delay);};window.attachEvent&&!window.addEventListener&&!supports_onhashchange&&(function(){var iframe,iframe_src;self.start=function(){if(!iframe){iframe_src=$.fn[str_hashchange].src;iframe_src=iframe_src&&iframe_src+get_fragment();iframe=$('<iframe tabindex="-1" title="empty"/>').hide().one('load',function(){iframe_src||history_set(get_fragment());poll();}).attr('src',iframe_src||'javascript:0').insertAfter('body')[0].contentWindow;doc.onpropertychange=function(){try{if(event.propertyName==='title'){iframe.document.title=doc.title;}}catch(e){}};}};self.stop=fn_retval;history_get=function(){return get_fragment(iframe.location.href);};history_set=function(hash,history_hash){var iframe_doc=iframe.document,domain=$.fn[str_hashchange].domain;if(hash!==history_hash){iframe_doc.title=doc.title;iframe_doc.open();domain&&iframe_doc.write('<script>document.domain="'+domain+'"</script>');iframe_doc.close();iframe.location.hash=hash;}};})();return self;})();})(jQuery,this);