function trackGoogleAdsenseClicks() 
{
	var ig=new Image();
	ig.src='/images/click.php';
} 

var elements;

if(document.getElementsByTagName) 
{

	elements = document.body.getElementsByTagName("IFRAME");


} 
else if (document.body.all) 
{
	elements = document.body.all.tags("IFRAME");

} 
else 
{
  	elements = array();

}


for(var i = 0; i < elements.length; i++) 
{
	if(elements[i].src.indexOf("pagead2.googlesyndication.com/pagead/ads") > -1) 
	{
		elements[i].onfocus = trackGoogleAdsenseClicks;
	} 
}