//  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|dot|docx|dotx|eps|jpg|png|svg|xls|xlt|xlsx|xlst|ppt|pps|pptx|ppsx|pot|potx|pdf|xls|zip|txt|vsd|vxd|js|css|rar|exe|wma|mov|avi|wmv|mpg|mpeg|mp3)($|\&|\?)/i);
        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(secondTracker) == "object") secondTracker._trackPageview(mailto);
  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(secondTracker) == "object") secondTracker._trackPageview(lnk); 
  if (typeof(pageTracker)   == "object") pageTracker._trackPageview(lnk);
}