if (typeof Event == 'undefined') Event = new Object();

Event.domReady = {
add: function(fn) {

if (Event.domReady.loaded) return fn();

var observers = Event.domReady.observers;

if (!observers) observers = Event.domReady.observers = [];
observers[observers.length] = fn;
if (Event.domReady.callback) return;
Event.domReady.callback = function() {
if (Event.domReady.loaded) return;
Event.domReady.loaded = true;
if (Event.domReady.timer) {
clearInterval(Event.domReady.timer);
Event.domReady.timer = null;
}

var observers = Event.domReady.observers;
for (var i = 0, length = observers.length; i < length; i++) {
var fn = observers[i];
observers[i] = null;
fn(); // make 'this' as window
}
Event.domReady.callback = Event.domReady.observers = null;
};

var ie = !!(window.attachEvent && !window.opera);
var webkit = navigator.userAgent.indexOf('AppleWebKit/') > -1;

if (document.readyState && webkit) {
// Apple WebKit (Safari, OmniWeb, ...)
Event.domReady.timer = setInterval(function() {
var state = document.readyState;
if (state == 'loaded' || state == 'complete') {
Event.domReady.callback();
}
}, 50);
} else if (document.readyState && ie) {
// Windows IE
var src = (window.location.protocol == 'https:') ? '://0' : 'javascript:void(0)';
document.write(
'<script type="text/javascript" defer="defer" src="' + src + '" ' +
'onreadystatechange="if (this.readyState == \'complete\') Event.domReady.callback();"' +
'><\/script>');
} else {
if (window.addEventListener) {
document.addEventListener("DOMContentLoaded", Event.domReady.callback, false);
window.addEventListener("load", Event.domReady.callback, false);
} else if (window.attachEvent) {
window.attachEvent('onload', Event.domReady.callback);
} else {
// Legacy browsers (e.g. Mac IE 5)
var fn = window.onload;
window.onload = function() {
Event.domReady.callback();
if (fn) fn();
}}}}}