// 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._trackPageview(lnk); 
}