//	This javascript tags file downloads and external links in Google Analytics.
//	You need to be using the Google Analytics New Tracking Code (ga.js) 
//	for this script to work.
//	To use, place this file on all pages just above the Google Analytics tracking code.
//	All outbound links and links to non-html files should now be automatically tracked.
//
//	This script has been provided by Goodwebpractices.com
//	Thanks to ShoreTel, MerryMan and Colm McBarron
//
//	www.goodwebpractices.com
//	VKI has made changes as indicated below.								

if (document.getElementsByTagName) {
	// Initialize external link handlers
	var hrefs = document.getElementsByTagName("a");
	for (var l = 0; l < hrefs.length; l++) {
		// try {} catch{} block added by erikvold VKI
		try {
			//protocol, host, hostname, port, pathname, search, hash
			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(/\.(?:doc|eps|jpg|png|svg|xls|ppt|pdf|xls|zip|txt|vsd|vxd|js|css|rar|exe|wma|mov|avi|wmv|mp3)($|\&|\?)/);
				if (isDoc) {
					startListening(hrefs[l], "click", trackExternalLinks);
				}
			} else if (!hrefs[l].href.match(/^javascript:/)) {
				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._trackEvent("Document", "Download", e.pathname.toString())
		pageTracker._trackPageview(lnk);
	}
}