/* namespacing object */
var net=new Object();
net.READY_STATE_UNINITIALIZED=0;net.READY_STATE_LOADING=1;
net.READY_STATE_LOADED=2;
net.READY_STATE_INTERACTIVE=3;
net.READY_STATE_COMPLETE=4;
/*--- content loader object for cross-browser requests ---*/
net.ContentLoader=function(url,on_load,on_error,method,params,contentType)
{this.req=null;this.on_load=on_load;this.on_error=(on_error) ? on_error : this.defaultError;
this.loadXMLDoc(url,method,params,contentType);}
net.ContentLoader.prototype.loadXMLDoc=function(url,method,params,contentType)
{if (!method){method="GET";}if (!contentType && method=="POST")
{contentType='application/x-www-form-urlencoded';}
if (window.XMLHttpRequest){this.req=new XMLHttpRequest();}
else if (window.ActiveXObject){//add try catch;
try {this.req = new ActiveXObject("Msxml2.XMLHTTP");
}catch (e1){
try {this.req = new ActiveXObject("Microsoft.XMLHTTP");     } 
catch (e2){}}////
this.req=new ActiveXObject("Microsoft.XMLHTTP");}
if (this.req){
try{
	var loader=this;this.req.onreadystatechange=function(){
		net.ContentLoader.onReadyState.call(loader);
		}
		this.req.open(method,url,true);
		if (contentType){
			this.req.setRequestHeader('Content-Type', contentType);
			}
			this.req.send(params);
			}catch (err){
				this.on_error.call(this);
				}
			}
		}
				net.ContentLoader.onReadyState=function(){
					var req=this.req;
					var ready=req.readyState;
					if (ready==net.READY_STATE_COMPLETE){
						var httpStatus=req.status;
						if (httpStatus==200 || httpStatus==0){
							this.on_load.call(this);
							}
						else{this.on_error.call(this);}
					}
				}
				net.ContentLoader.prototype.defaultError=function(){
					alert("error fetching data!"+"\n\nreadyState:"+this.req.readyState+"\nstatus: "+this.req.status+"\nheaders: "+this.req.getAllResponseHeaders());
				}