//	This javascript tags external links and mailto 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.
						

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{
				
	                if (hrefs[l].hostname != location.host) {
	                        startListening(hrefs[l],"click",trackExternalLinks);
	                } 
					if (hrefs[l].hostname == location.host) {
	                	var path = hrefs[l].pathname + hrefs[l].search;
						var isDoc = path.match(/\.(?:pdf)($|\&|\?)/);
	                    if (isDoc) {
	                    	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 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 = "/outgoing/" + e.hostname + lnk;
        if (typeof(pageTracker) == "object") pageTracker._trackPageview(lnk); 
}