var iFr;
function AdSenseLog()
{ 
	var theAd=""+ escape(window.status);
	var channel=queryString('channel',iFr.src);
	var bug = new Image();
	bug.src = '/adsense.aspx?referer=' + document.referrer + '&destination=' + theAd + '&channel='+channel ; 
}  
	
function queryString(item, source)
{
var itemLoc=source.indexOf(item);
var newSrc=source.substring(itemLoc);
var endLoc=newSrc.indexOf("&");
var lstSrc=newSrc.substring(0,endLoc);
var itm=lstSrc.substring(item.length+1);
return itm;
} 
	
var elements; 
elements = document.getElementsByTagName("iframe"); 

for (var i = 0; i < elements.length; i++) 
{ 
if(elements[i].src.indexOf('googlesyndication.com') > -1) 
{ 
	elements[i].attachEvent("onfocus",AdSenseLog) 
	iFr=elements[i];
} 
}