jQuery-based outbound link tracking with cases for new window as well as same window locations

Outbound Link Tracking - Google Analytics.js

/**
 * Outbound link tracking
 * 
 * This code largely based on examples from 
 * [Google Analytics Help](http://www.google.com/support/googleanalytics/bin/answer.py?answer=55527).
 */
jQuery(function($){
	$('a:not([href*="' + document.domain + '"])').click(function(event){
		// Just in case, be safe and don't do anything
		if (typeof _gat == 'undefined') {
			return;
		}
		
		// Stop our browser-based redirect, we'll do that in a minute
		event.preventDefault();
		
		var link = $(this);
		var href = link.attr('href');
		var noProtocol = href.replace(/http[s]?:\/\//, '');
		
		// Track the event
		_gat._getTrackerByName()._trackEvent('Outbound Links', noProtocol);

		// Opening in a new window?
		if (link.attr('target') == '_blank') {
			/* If we are opening a new window, go ahead and open it now
			instead of in a setTimeout callback, so that popup blockers
			don't block it. */
			window.open(href);
		}
		else {
			/* If we're opening in the same window, we need to delay 
			for a brief moment to ensure the _trackEvent has had time
			to fire */
			setTimeout('document.location = "' + href + '";', 100);
		}
	});
});

mousedown doesn't mean they clicked the link. You could get false data if they click on the element and drag away (not finishing the mouseup on the element).