function trackDownload(linkElement)
{
	var url_split = linkElement.href.toLowerCase().match(/(\w+):\/\/([\w.]+)(\/\S*)/);
	var uri = url_split[3];
	if (pageTracker){
		pageTracker._trackPageview(uri);		
	}
	
}

window.onload = function() {
	
	// Get all links
	var x = document.body.getElementsByTagName("a");
	
	// add tracking function to selected links
	for (i=0;i<x.length;i++)
	{
		var fileExtension = x[i].href.toLowerCase().substr(x[i].href.lastIndexOf("."), x[i].href.length);
		
		if ((fileExtension == ".zip") || (fileExtension == ".pdf") || (fileExtension == ".mpg") || (fileExtension == ".wmv") || (fileExtension == ".ppt"))
		{
			x[i].target = "_blank";
			x[i].onclick=function(){trackDownload(this);};			
		}
	}	
}