// 2009-04-22: D.Kozar obtained following script from http://www.goodwebpractices.com/roi/track-downloads-in-google-analytics-automatically.html
// 2009-04-27: D.Kozar documented and filed in ../docs/GoogleAnalytics.txt
if (document.getElementsByTagName) {
	var hrefs = document.getElementsByTagName("a");
	for (var l = 0; l < hrefs.length; l++) {
		try {
			if (hrefs[l].protocol == "mailto:") { startListening(hrefs[l],"click",trackMailto); }
			else if (hrefs[l].hostname == location.host) {
				var path = hrefs[l].pathname + hrefs[l].search;
				var isDoc = path.match(/\.(?:docx|doc|xlsx|xls|ppt|pdf|zip|txt|vsd|vxd|rar|wma|mov|avi|wmv|mp3)($|\&|\?)/);
				if (isDoc) { startListening(hrefs[l],"click",trackExternalLinks); }
			}
			else { startListening(hrefs[l],"click",trackExternalLinks); }
		}
		catch(e){ continue; }
	}
}
function startListening (obj,evnt,func) {
	if (obj.addEventListener) { obj.addEventListener(evnt,func,false); }
	else if (obj.attachEvent) { obj.attachEvent("on" + evnt,func); }
}
function trackMailto (evnt) {
	var href = (evnt.srcElement) ? evnt.srcElement.href : this.href;
	var mailto = "/mailto/" + href.substring(7);
	if (typeof(pageTracker) == "object") pageTracker._trackPageview(mailto);
}
function trackExternalLinks (evnt) {
	var e = (evnt.srcElement) ? evnt.srcElement : this;
	while (e.tagName != "A") { e = e.parentNode; }
	var lnk = (e.pathname.charAt(0) == "/") ? e.pathname : "/" + e.pathname;
	if (e.search && e.pathname.indexOf(e.search) == -1) lnk += e.search;
	if (e.hostname != location.host) lnk = "/external/" + e.hostname + lnk;
	if (typeof(pageTracker) == "object") pageTracker._trackPageview(lnk);
}