Object.extend(Event,{_domReady:function(){if(arguments.callee.done)return;arguments.callee.done=true;if(this._timer)clearInterval(this._timer);this._readyCallbacks.each(function(f){f()});this._readyCallbacks=null},onDOMReady:function(f){if(!this._readyCallbacks){var domReady=this._domReady.bind(this);if(document.addEventListener)document.addEventListener("DOMContentLoaded",domReady,false);/*@cc_on@*//*@if(@_win32)var dummy=location.protocol=="https:"?"https://javascript:void(0)":"javascript:void(0)";document.write("<script id=__ie_onload defer src='"+dummy+"'><\/script>");document.getElementById("__ie_onload").onreadystatechange=function(){if(this.readyState=="complete")domReady()};/*@end@*/if(/WebKit/i.test(navigator.userAgent)){this._timer=setInterval(function(){if(/loaded|complete/.test(document.readyState))domReady()},10)}Event.observe(window,'load',domReady);Event._readyCallbacks=[]}Event._readyCallbacks.push(f)}});