var lnks;
var img	    = new Image();
var NS4		= (document.layers) ? true : false;
var NS6		= (navigator.appName == "Netscape")
var NS4old	= (NS4 && (parseFloat(navigator.appVersion) < 4.02));
var oldOnLoad;
var oldOnBeforeUnLoad;
var onLoadDefined;
var onBeforeUnLoadDefined;
var tmp = new Date();
var suffix = tmp.getTime();

if(window.onload){
	oldOnLoad=window.onload;
	onLoadDefined=true;
}

if(window.onunload){
	oldOnBeforeUnLoad=window.onunload;
	onBeforeUnLoadDefined=true;
}

window.onunload=function(){  	
	if(onBeforeUnLoadDefined){
		oldOnBeforeUnLoad();}		
	//postData("/p/evt5c.aspx")
}


function postData(url)
{		
	var xHttp;
	if (window.ActiveXObject){
		xHttp = new ActiveXObject("Microsoft.XMLHTTP")			
	}else{
		xHttp=new XMLHttpRequest()	
	}	
	xHttp.open("POST",url,false);	
	xHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");	
	xHttp.setRequestHeader("Content-Length",0);	
	xHttp.setRequestHeader("Connection", "close");
	xHttp.send(null);
}


window.onload=function(){	
	if (onLoadDefined)
		oldOnLoad
	lnks=new Object();
	var ln=document.links.length;
	lnks.li=new Array(ln);
		
	for (var i=0; i<ln; i++){				
		if(document.links[i].onclick){		
			lnks.li[i]=document.links[i];
			lnks.li[i].oldOnClick=document.links[i].onclick;
		}			
		eval("document.links[i].onclick=function(){return onClickTrack(this,lnks);}");
	}
}

function onClickTrack(x,y){	
	var i=0;
	var rv=true;
	
	while(document.links[i]!=x){
		i++;
	}

	if(y.li[i])
		rv=y.li[i].oldOnClick();

	if(getHost(location)==getHost(x))return true;
	
	var ln=escape(x.href);		
    img.src='/p/evt6c.aspx?el='+ ln +'&s=' + suffix;
	return rv
}

function getHost(x)
{
	var i=x.host.indexOf(":");
	return (i>=0)?x.host.substring(0,i):x.host;
}