(function() {
var TrackExternal = new Class({
	ie: false,
	event: {},
	initialize: function() {
		document.addEvents({
			mousedown: function(e) {
				this.event.down = e;
			}.bind(this),
			mouseup: function(e) {
				this.event.up = e;

				var target = this.getTarget();
				var rel = target.getProperty('rel');

				if(target && target.getTag() == 'a' && target.getProperty('target') == '_blank') {
					var ev = new AnalyticsEvent({
						category: this.getLinkType(),
						action: this.getLinkLabel(),
						label: this.getLinkUri(),
						value: this.getValue()
					});

					ev.track();
				}
			}.bind(this)
		});

		this.ie = this.getIEVersion();
	},
	getButton: function() {
		if(this.event.up.button === this.event.down.button) {
			e = this.event.up;
			if(this.ie !== false && this.ie < 9) {
				if(e.button === 1) {
					return 'left';
				}
				else if(e.button === 4) {
					return 'middle';
				}
				else if(e.button === 2) {
					return 'right';
				}
			}
			else {
				if(e.button === 0) {
					return 'left';
				}
				else if(e.button === 1) {
					return 'middle';
				}
				else if(e.button === 2) {
					return 'right';
				}
			}
		}

		return false;
	},
	getIEVersion: function() {
		var match = /MSIE (\d)/.exec(navigator.appVersion);

		if(match && match.length == 2) {
			return Number(match[1]);
		}
		else {
			return false;
		}
	},
	getLinkType: function() {
		var target = this.getTarget();

		if(target) {
			var type = target.getProperty('data-type');

			if(type) {
				return type;
			}
		}

		if(window.location.pathname.match(/\/companies\//)) {
			return 'Company Profile';
		}
		else if(window.location.pathname.match(/\/product\//)) {
			return 'Product Snapshot';
		}
		else if(target.hasClass('gs-title')) {
			return 'Custom Search';
		}
		else {
			return 'Outbound Links';
		}
	},
	getLinkLabel: function() {
		var label = '';

		if(typeof QueryString != 'undefined') {
			var qs = new QueryString();
			label = qs.get('query');
		}

		if(!label) {
			return document.title.split(' |', 1)[0];
		}
		else {
			return label;
		}
	},
	getLinkUri: function() {
		var target = this.getTarget();

		if(target && target.getProperty('data-label')) {
			return target.getProperty('data-label');
		}
		else if(target && target.getProperty('data-ctorig')) {
			return target.getProperty('data-ctorig');
		}
		else if(target && target.getProperty('href')) {
			return target.getProperty('href');
		}
	},
	getTarget: function() {
		var target;

		if(typeof this.event.up.target !== 'undefined'
			&& this.event.up.target === this.event.down.target
		) {
			target = $(this.event.up.target);
		}
		else if(typeof this.event.up.srcElement !== 'undefined'
			&& this.event.up.srcElement === this.event.down.srcElement
		) {
			target = $(this.event.up.srcElement);
		}
		else {
			return false;
		}

		if(target.getTag() == 'img') {
			return target.getParent();
		}
		else {
			return target;
		}
	},
	getValue: function() {
		var button = this.getButton();
		if(button == 'left' || button == 'middle') {
			return 1;
		}
		else {
			return 0;
		}
	}
});

var AnalyticsEvent = new Class({
	options: {
		category: 'Outbound Links',
		action: 'Category',
		label: '/',
		value: 0
	},
	initialize: function(options) {
		this.setOptions(options);
	},
	track: function() {
		_gaq = _gaq || [];
		_gaq.push([
			'_trackEvent', 
			this.options.category, 
			this.options.action, 
			this.options.label, 
			this.options.value
		]);
		_gaq.push([
			'b._trackEvent', 
			this.options.category, 
			this.options.action, 
			this.options.label, 
			this.options.value
		]);
	}
});

AnalyticsEvent.implement(new Options);

window.addEvent('domready', function(e) {
	new TrackExternal();
});
})();