//	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 {
        startListening(hrefs[l],"click",trackExternalLinks);
      }
		} catch(e) {
			continue;
		}
  }
}

function getHostname(str) {
	var re = new RegExp('^(?:f|ht)tp(?:s)?\://([^/]+)', 'im');
	return str.match(re)[1].toString();
}

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);
        _gaq.push(["_setAccount", "UA-2864277-2"]);
        _gaq.push(["_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;
        _gaq.push(["_setAccount", "UA-2864277-2"]);
        _gaq.push(["_trackPageview("+lnk+")"]);        
}