// tracking downloads with Google Analytics:

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 {
	                        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); 
}