//	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.	
//  Fix to ignore JavaScript in hrefs by Adviso

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|gif|jpeg|svg|xls|ppt|pdf|xls|zip|txt|vsd|vxd|js|css|rar|exe|wma|mov|avi|wmv|mp3|rss)($|\&|\?)/);
                if (isDoc) {
                    startListening(hrefs[l], "click", trackOutFileLinks);
                }
                // Fix to ignore JavaScript in hrefs and ignore links without href
            } else if (!hrefs[l].href.match(/^javascript:/) && hrefs[l].href) {
                startListening(hrefs[l], "click", trackOutFileLinks);
            }
        }
        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 category = 'Mailto';
    var action = href.substring(7);
    var label = document.location.pathname;

    if (typeof (_gaq) == "object") _gaq.push(['_trackEvent', category, action, label]);

}

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 | " + matches[2].toUpperCase();
        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]);
}