//	This script has been provided by Goodwebpractices.com
//	Thanks to ShoreTel, MerryMan and Colm McBarron							

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); 
}