// We dont want the try adding the tracking code until the page links are loaded
if (document.addEventListener) {
	document.addEventListener("DOMContentLoaded", addEvents, null); // Firefox
} else {
	addEvents(); // IE : Call the function immediately because the script is referenced with the defer attribute supported by IE
}

function addEvents() {
	// quit if this function has already been called
	if (arguments.callee.done) return;
	// flag this function so we don't do the same thing twice
	arguments.callee.done = true;
	for (i=0; i <document.links.length; i++) {
		var x = document.links[i];
		// Only attach tracking code to specific file types
		var extensions = new RegExp(".+\.(zip|pdf|xls|doc|csv|txt|ppt|xml|rtf)$");
		var doc = x.href.toLowerCase().match(extensions);
		if (doc) {
			if (x.attachEvent) {
				x.attachEvent('onclick', function () {TrackIt(window.event.srcElement)}); // IE
			} else {
			x.addEventListener('click', function () {TrackIt(this)}, false); // Firefox
			}
		}
	}
}

function TrackIt(link)
{
	// Remove the conversion to Lowercase if you are on a Case sensitive web server
	var slashes = link.href.indexOf("//") + 2;
	var docPath = link.href.toLowerCase().substring(slashes, link.href.length);
	urchinTracker(docPath);
}