ajax=Class.create();ajax.prototype={initialize:function(url,options){this.transport=this.getTransport();this.postBody=options.postBody||'';this.method='post';this.update=options.update||null;this.request(url)},request:function(url){this.transport.open(this.method,url,true);this.transport.onreadystatechange=this.onStateChange.bind(this);this.transport.setRequestHeader('Content-type','application/x-www-form-urlencoded');if(this.transport.overrideMimeType)this.transport.setRequestHeader('Connection','close');this.transport.send(this.postBody)},onStateChange:function(){if(this.transport.readyState==4&&this.transport.status==200){if(this.update)setTimeout(function(){$(this.update).innerHTML=this.transport.responseText}.bind(this),10);this.transport.onreadystatechange=function(){}}},getTransport:function(){if(window.ActiveXObject)return new ActiveXObject('Microsoft.XMLHTTP');else if(window.XMLHttpRequest)return new XMLHttpRequest();else return false}};