var request=false;
function createrequest(){
try{
   request=new XMLHttpRequest();
}catch(trymicrosoft){
	try{
		request=new ActiveXObject("Msxml2.XMLHTTP");
	}catch(othermicrosoft){
		try{
		request=new ActiveXObject("Microsoft.XMLHTTP");
		}catch(failed){
			request=false;
		}
	}
}
if(!request){
 alert("error initializing XMLHttpRequest!!");
}
}
function tongji(){
	createrequest();
	var nowurl=document.URL;
	var fgavblock="";
	var tempurl=document.referrer;
	var realurl="";
	var zhuanti="";
	if(tempurl!=""){
		
			if(tempurl.indexOf("zhuanti")>=0){
				if(nowurl.indexOf("special")>=0){
					var firstindex=nowurl.indexOf("special");
				  firstindex=firstindex+13;
				  var endindex=nowurl.indexOf("/",firstindex);
				  zhuanti=nowurl.substring(firstindex,endindex);
				
				}
			}
			
			realurl="url="+tempurl;
				if(nowurl.indexOf("fgavblock")>=0){
					fgavblock=nowurl.substring(nowurl.indexOf("fgavblock")+10);
				}
				if(fgavblock==""){
					realurl=realurl+"&fgavblock=0";
				}else{
					realurl=realurl+"&fgavblock="+fgavblock;
				}
				if(zhuanti==""){
					realurl=realurl+"&zhuanti=test";
				}else{
					realurl=realurl+"&zhuanti="+zhuanti;
				}
				
				var url="/tongji.jsp";
				request.open("POST",url,true);
				request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
				request.onreadystatechange=updatepage;
				request.send(realurl);
	}
	
	
}
function updatepage(){
	if(request.readyState==4){
		if(request.status==200){
			var text=request.responseText;
			
		}
	}
}