//  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", trackDocuments);
                          }
                  } 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);	
	  	}
		else {
			_gaq.push(['_trackEvent', 'Contact', 'mailto', href.substring(7)]);
		}
}

function trackDocuments(evnt) {
        var e = (evnt.srcElement) ? evnt.srcElement : this;
        while (e.tagName != "A") {
                e = e.parentNode;
        }
        var lnk = '/document' + ( (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/document/" + e.hostname + lnk;
		
        if (typeof(pageTracker) == "object") {
     		pageTracker._trackPageview(lnk); 
  		}
		else {
			_gaq.push(['_trackEvent', 'Documents', 'Download', lnk]);
		}

}

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); 
			}
			else {
				_gaq.push(['_trackEvent', 'Links', 'Follow',  e.hostname + lnk]);
			}
		}
}