/************************************
 *
 * Automatically tag links for Google Analytics to
 * simplify tracking across domains. 
 *
 * Peter McKenna
 * peter.mckenna@iqcontent.com
 * 
 * v1. Initial script
 *
 ************************************/

// Config Variables.
var domains_to_track =
	[
	 '*.kennesaw.edu',
	 '*.campusce.net',
	 'www.kennesaw.edu/coned',
	 'www.kennesaw.edu/Coned',
	 'www.campusce.net/Kennesaw'
	];

// Get all the links on the page (could be slow for pages with lots of links)
var links = document.getElementsByTagName("a");
// Loop through links
for (i = 0; i < links.length; i++) {
    // Get the target for link
    var link_target = links[i].host;
    // Loop through domains to track
    for (j = 0; j < domains_to_track.length; j++) {
        var wildcard_domain = -1;
        // Check for wildcard domain (e.g. *.somedomain.com)
        if (domains_to_track[j].substr(0, 1) == '*') {
            wildcard_domain = domains_to_track[j].substr(2, (domains_to_track[j].length - 1));
        }
        // Checks if domain should be tracked
        if (link_target == domains_to_track[j] ||
		   link_target == domains_to_track[j] + ':80' ||
		   link_target.indexOf(wildcard_domain) >= 0) {
            links[i].onclick =
				function() {
				    // Run tagLink function when link is clicked
				    return tagLink(this.href);
				}
        }
    }
}

// This function is called when a tracked link is clicked
function tagLink(link_href) {
    // Check if pageTracker or urchinTracker are present
    if (typeof pageTracker != 'undefined') {
        pageTracker._link(link_href);
        return false;
    }
    else if (typeof urchinTracker != 'undefined') {
        __utmLinker(link_href);
        return false;
    }
    else {
        return true;
    }
}