//	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.								

function gatag_setup() {
   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:") {
               gatag_startListening(hrefs[l],"click",gatag_trackMailto);
            } else if (hrefs[l].hostname == location.host) {
               var path = hrefs[l].pathname + hrefs[l].search;
               var isDoc = path.match(/\.(?:avi|bat|csv|dll|doc|docx|dot|dotx|eps|exe|inf|mov|mp3|mpg|pdf|png|pps|ppsx|ppt|pptx|pub|ram|rar|rtf|svg|swf|txt|vsd|vxd|wav|wma|wmv|wvx|xls|xlsx|zip)($|\&|\?)/);
               if (isDoc) {
                  gatag_startListening(hrefs[l],"click",gatag_trackExternalLinks);
               }
            } else {
               gatag_startListening(hrefs[l],"click",gatag_trackExternalLinks);
            }
         }
         catch(e){
            continue;
         }
      }
   }
}

function gatag_startListening (obj,evnt,func) {
   if (obj.addEventListener) {
      obj.addEventListener(evnt,func,false);
   } else if (obj.attachEvent) {
      obj.attachEvent("on" + evnt,func);
   }
}

function gatag_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 gatag_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); 
}