//	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].protocol == "javascript:") {
        startListening(hrefs[l],"click",trackJS);
	    } 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",trackDownloads);
	      }
	    } 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 trackJS (evnt) {
  var href = (evnt.srcElement) ? evnt.srcElement.href : this.href;
  var mailto = "/javascript" + href.substring(11);
  if (typeof(pageTracker) == "object") pageTracker._trackPageview(mailto);
}

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); 
}

function trackDownloads (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;
  lnk = "/downloads" + lnk;
  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); 
}