//	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.

$(document).ready(function(){
	addDownloadHandler();
});

function addDownloadHandler()
{
	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.hostname) {
								var path = hrefs[l].pathname + hrefs[l].search;
					var isDoc = path.match(/(\&|\?)ausgabeart\=DL($|\&)/);
								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.hostname) lnk = "/external/" + e.hostname + lnk;
        
		var pageTracker = _gat._createTracker('UA-374759-1');
		
		if (typeof(pageTracker) == "object")
		{
			pageTracker._trackPageview(lnk);
		}

}