//	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.								

window.onload = tagTags;

function tagTags()
{
	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|pdf)($|\&|\?)/);
						if (isDoc) {
							startListening(hrefs[l],"click",trackDocument);
						}
					} else {
						if (hrefs[l].pathname.toLowerCase().indexOf('_dopostback') < 0) 
							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 = href.substring(7);
	if (typeof (pageTracker) == "object") pageTracker._trackEvent('Links', mailto, getRole());
}

function trackDocument(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 (typeof (pageTracker) == "object") pageTracker._trackEvent('Documenten', lnk, getRole());

}

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;
	lnk = e.hostname + lnk;
	if (typeof (pageTracker) == "object") pageTracker._trackEvent('Links', lnk, getRole());
}

function getRole() {
	try {
		return _rol;
	} catch (exc) {
	return "";
	}
	
}