MooTools Analytics Tracker

tracker.js

/*
	Monitors link clicks and pushes them to google analytics
	It automatically tracks mail links and downloads, and if a link doesn't leed to the same domain it tracks it as an outbound link.
	based on the drupalmodule http://drupalcontrib.org/api/drupal/contributions--google_analytics--googleanalytics.module

	@author Leon Radley

	Custom tracking example:
	Tracker.track('download', 'customfile', 'mycustomfile');
*/
var _gaq = _gaq || [];
var Tracker = new Class({

	Implements: [Options],

	options: {
		// track downloads
		downloads: true,
		// what extensions to track
		extensions: '7z|aac|arc|arj|asf|asx|avi|bin|csv|doc|exe|flv|gif|gz|gzip|hqx|jar|jpe?g|js|mp(2|3|4|e?g)|mov(ie)?|msi|msp|pdf|phps|png|ppt|qtm?|ra(m|r)?|sea|sit|tar|tgz|torrent|txt|wav|wma|wmv|wpd|xls|xml|z|zip',
		// track mail links
		mailto: true,
		// track outbound links
		outbound: true,
		// outbound links show up under exit links
		outboundAsPageView: false,
		// subdomain.domain.com|subdomain2.domain.com
		crossDomains: null
	},

	initialize: function(options){
		this.setOptions(options);

		this.isInternal = new RegExp('^(https?):\/\/' + window.location.host, 'i');
		this.isDownload = new RegExp('\\.(' + this.options.extensions + ')$', 'i');
		this.options.crossDomains = this.options.crossDomains ? this.options.crossDomains.replace(/[-[\]{}()*+?.,\\^$#\s]/g, '\\$&') : '';
		this.isCrossDomain = new RegExp('^(https?|ftp|news|nntp|telnet|irc|ssh|sftp|webcal):\/\/.*(' + this.options.crossDomains + ')', 'i');

		document.addEvent('click:relay(a)', this.track.bind(this));
	},

	track: function(event, a){
		if(this.isInternal.test(a.href)){
			if(this.options.download && this.isDownload.test(a.href)){
				var extension = this.isDownload.exec(a.href);
				_gaq.push(['_trackEvent', 'Downloads', extension[1].toLowerCase(), a.href.replace(this.isInternal, '')]);
			}
		} else {
			if(this.options.mailto && a.href.test(/^mailto:/)){
				_gaq.push(['_trackEvent', 'Mails', 'Click', a.href.substring(7)]);
			} else if(this.options.outbound && a.href){
				if(this.isCrossDomain.test(a.href)){
					_gaq.push(["_link", a.href]);
				} else if(this.options.outboundAsPageView){
					_gaq.push(["_trackPageview", '/outbound/' + a.href.replace(/^(https?|ftp|news|nntp|telnet|irc|ssh|sftp|webcal):\/\//i, '').split('/').join('--')]);
				} else {
					_gaq.push(["_trackEvent", "Outbound links", "Click", a.href]);
				}
			}
		}
	}
});

Tracker.extend({
	pageView: function(url){
		_gaq.push(['_trackPageview', url]);
	},

	track: function(category, name, comment){
		_gaq.push(['_trackEvent', category, name, comment || '']);
	}
});
new Tracker();