// ***** Configuratie *****

// Uitgaande links naar deze domeinen negeren: ("domein1.nl www.domein2.nl")
var ignore_urls      = "margrietwinterfair.nl doubleclick.net google.com";

// Set this value to zero, if you want to use virtual pageviews instead of events
var event_tracking   = 0;

// Url prefixes for virtual tracking
var prefix_clickouts = "/clickout/";
var prefix_mailto    = "/mailto/";

// ***** Configuratie *****

if (typeof _gaq == 'undefined') {
//	alert("Asynchronous analytics object not found");
}

function addEvent(element, type, handler)
{
	if (element.addEventListener)
	{
		element.addEventListener(type, handler, false);
	}
	else
	{
		if (!handler.$$guid) handler.$$guid = addEvent.guid++;
		if (!element.events) element.events = {};
		var handlers = element.events[type];
		if (!handlers)
		{
			handlers = element.events[type] = {};
			if (element["on" + type])
			{
				handlers[0] = element["on" + type];
			}
		}
		handlers[handler.$$guid] = handler;
		element["on" + type] = handleEvent;
	}
}
addEvent.guid = 1;

function handleEvent(event)
{
	var returnValue = true;
	event = event || fixEvent(((this.ownerDocument || this.document || this).parentWindow || window).event);
	var handlers = this.events[event.type];
	for (var i in handlers)
	{
		this.$$handleEvent = handlers[i];
		if (this.$$handleEvent(event) === false)
		{
			returnValue = false;
		}
	}
	return returnValue;
}

function fixEvent(event)
{
	event.preventDefault = fixEvent.preventDefault;
	event.stopPropagation = fixEvent.stopPropagation;
	return event;
}

fixEvent.preventDefault = function()
{
	this.returnValue = false;
}

fixEvent.stopPropagation = function()
{
	this.cancelBubble = true;
}

ignore_urls = document.domain + " " + ignore_urls;
ignore_urls = ignore_urls.replace(/^\s+/,'').replace(/\s+$/,'');
ignore_urls = ignore_urls.split(" ");

function checkLinkToOwnDomains(txt)
{
	for (var i = 0; i <= ignore_urls.length; i++)
	{
		if (txt.indexOf(ignore_urls[i]) > -1) { return false; }
	}
	return true;
}

elm = document.getElementsByTagName("a");
for (var i = 0; i < elm.length; i++)
{
	var path = elm[i].href + "";

	// Downloads
	if (path.match(/\.(doc|eps|jpg|png|svg|xls|ppt|pdf|xls|zip|txt|vsd|vxd|js|css|rar|exe|wma|mov|avi|wmv|mp3)$/) != null)
	{
		if ((path.indexOf("http://" + location.host) > -1) || (checkLinkToOwnDomains(path) == false))
		{
			if (event_tracking == 1) {
			addEvent(elm[i], 'click', function() {
//				alert("download");
				_gaq.push(['_trackEvent', 'default', 'download', this.href, 0]);
			} );
			} else {
			addEvent(elm[i], 'click', function() {
//				alert("download virtual");
				_gaq.push(['_trackPageview', this.href]);
			} );
			}
		}
	}

	// Mailto's
	else if (path.indexOf("mailto:") > -1)
	{
		if (event_tracking == 1) {
		addEvent(elm[i], 'click', function() {
//			alert("mailto");
			_gaq.push(['_trackEvent', 'default', 'mailto', (this.href).substr(7), 0]);
		} );
		} else {
		addEvent(elm[i], 'click', function() {
//			alert("mailto virtual");
			_gaq.push(['_trackPageview', prefix_mailto + (this.href).substr(7)]);
		} );
		}
	}

	// Uitgaande links
	else if (checkLinkToOwnDomains(path) && (path.indexOf("javascript:") == -1))
	{
		if (event_tracking == 1) {
		addEvent(elm[i], 'click', function() {
//			alert("event");
			_gaq.push(['_trackEvent', 'default', 'clickout', (this.href).substr(7), 0]);
		} );
		} else {
		addEvent(elm[i], 'click', function() {
//			alert("event virtual");
			_gaq.push(['_trackPageview', prefix_clickouts + (this.href).substr(7)]);
		} );
		}
	}
}