//	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|docx|jpg|png|svg|xls|ppt|pdf|xlsx|zip|txt|vsd|pptx|js|css|rar|exe|wma|mov|avi|wmv|mp3|xml|rss)($|\&|\?)/);
                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.host) lnk = "/external/" + e.hostname + lnk;
    if (typeof (pageTracker) == "object") pageTracker._trackPageview(lnk);
}

function trackOutFileLinks (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;
	
  var category = '';
  var action = '';
  var label = document.location.pathname;
  if(e.hostname != location.host) {
    category = "Outbound";
    action = e.hostname + lnk;
  } else if(lnk.match(/\.(doc|xls|ppt|pdf|xls|zip|txt|vsd|vxd|js|css|rar|exe|wma|mov|avi|wmv|mp3|rss)($|\&|\?)/)) {
    var matches = lnk.match(/([^\/]*\.(doc|xls|ppt|pdf|xls|zip|txt|vsd|vxd|js|css|rar|exe|wma|mov|avi|wmv|mp3|rss))(?:$|\&|\?)/);
    category = "File";
    action = matches[1];  
  } else if(lnk.match(/\.(eps|jpg|png|svg|gif|jpeg)($|\&|\?)/)) {
    var matches = lnk.match(/([^\/]*\.(eps|jpg|png|svg|gif|jpeg))(?:$|\&|\?)/);
    category = "Image";
    action = matches[1];  
  }
  
  if (typeof(_gaq) == "object") _gaq.push(['_trackEvent', category, action, label]);
}