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

// This function is called when a tracked link is clicked
function tagLink(link_href) {
	// Check if pageTracker or urchinTracker are present
	if (typeof _gaq != 'undefined') {
		//_gaq.push(['_link', link_href]);
		_gaq.push(['t2._link', link_href]);
		return false;
	}
	else if (typeof urchinTracker != 'undefined') {
		__utmLinker(link_href);
		return false;
	}
	else {
		return true;
	}
}

$(document).ready(function() {
	// Config Variables.
	var domains_to_track = 
		[
		 'shop.naturalwellnessonline.com'
		 //'www.maximummilkthistle.com'
		];
	
	// 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);
					}
			}
		}
	}
});