//**************************************************************************************
//     Automatically tag links for Google Analytics to simplify tracking across domains. 
//     Author: Peter McKenna @ iQ Content
//     Adjusted by Allaedin Ezzedin @ E-Nor to make the code work with Asynchronous
//**************************************************************************************

function links_finder(domains_to_track)
{
	// 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 Async, Sync (pageTracker) or urchinTracker are present
	if (typeof _gaq != 'undefined') {
		_gaq.push(['_link', link_href]);
		return false;
	}
	else if (typeof pageTracker != 'undefined') {
		pageTracker._link(link_href);
		return false;
	}
	else if (typeof urchinTracker != 'undefined') {
		__utmLinker(link_href);
	}
	else {
		return true;
	}
}