// This javascript tags file downloads and external links in Google Analytics.
// You need to be using the Google Analytics Asynchronous Tracking for this script to work.
// Place this file just before your HTML </body> tag.
// All outbound links and links to non-html files should now be automatically tracked.
 
// Edited by Eivind Savio to work with Google Analytics Asynchronous Tracking.
// http://code.google.com/intl/nb/apis/analytics/docs/tracking/asyncTracking.html

if (document.getElementsByTagName) {
        // Initialize external link handlers
        var hrefs = document.getElementsByTagName("a");
        for (var l = 0; l < hrefs.length; l++) {
                //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|gif|svg|xls|ppt|pdf|xls|zip|txt|vsd|vxd|js|css|rar|exe|wma|mov|avi|wmv|mp3)($|\&)/);
                        if (isDoc) {	
                          startListening(hrefs[l],"click",trackFiles);
	                    }
                } else if (hrefs[l].protocol == "http:" || hrefs[l].protocol == "https:") {
                        startListening(hrefs[l],"click",trackExternalLinks);
                }
        }
}

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 = href.substring(7);
		// Track e-mail clicks as Events. We only track the click, not the email-adress.
        	var mailto = href.substring(7);
		_gaq.push(['_trackEvent', 'Clicks', 'Email']);
}
function trackFiles (evnt) {
        var e = (evnt.srcElement) ? evnt.srcElement : this;
        while (e.tagName != "A") {
                e = e.parentNode;
        }
        var tFile = (e.pathname.charAt(0) == "/") ? e.pathname : "/" + e.pathname;
        if (e.search && e.pathname.indexOf(e.search) == -1) tFile += e.search;
		var docRegEx = new RegExp(/[^\.]+$/); 
		var match = docRegEx.exec(tFile);
		var docT = match[0];
       		_gaq.push(['_trackPageview',tFile]);	
		_gaq.push(['_trackEvent','Download','Download: ' + docT,tFile]);
}
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.hostname != location.host) lnk = e.hostname + lnk;
        	_gaq.push(['_trackEvent', 'Clicks', 'Exit Clicks',lnk,,true]); //Use Event Tracking that doesn't affect Bounce Rate
}