/*
* (c)2006 Dean Edwards/Matthias Miller/John Resig
* Special thanks to Dan Webb's domready.js Prototype extension
* and Simon Willison's addLoadEvent
*
* For more info, see:
* http://dean.edwards.name/weblog/2006/06/again/
* http://www.vivabit.com/bollocks/2006/06/21/a-dom-ready-extension-for-prototype
* http://simon.incutio.com/archive/2004/05/26/addLoadEvent
* 
* Thrown together by Jesse Skinner (http://www.thefutureoftheweb.com/)
*
*
* To use: call addDOMLoadEvent one or more times with functions, ie:
*
*    function something() {
*       // do something
*    }
*    addDOMLoadEvent(something);
*
*    addDOMLoadEvent(function() {
*        // do other stuff
*    });
*
*/

function addDOMLoadEvent(func) {
	if (!window.__load_events) {
		var init = function () {
			// quit if this function has already been called
			if (arguments.callee.done) return;
		
			// flag this function so we don't do the same thing twice
			arguments.callee.done = true;
		
			// kill the timer
			if (window.__load_timer) {
				clearInterval(window.__load_timer);
				window.__load_timer = null;
			}
		
			// execute each function in the stack in the order they were added
			for (var i=0;i < window.__load_events.length;i++) {
				window.__load_events[i]();
			}
			window.__load_events = null;
		};
   
		// for Mozilla/Opera9
		if (document.addEventListener) {
			document.addEventListener("DOMContentLoaded", init, false);
		}
      
		// for Internet Explorer
		/*@cc_on @*/
		/*@if (@_win32)
			document.write("<scr"+"ipt id=__ie_onload defer src=javascript:void(0)><\/scr"+"ipt>");
			var script = document.getElementById("__ie_onload");
			script.onreadystatechange = function() {
				if (this.readyState == "complete") {
					init(); // call the onload handler
				}
			};
		/*@end @*/
	
		// for Safari
		if (/WebKit/i.test(navigator.userAgent)) { // sniff
			window.__load_timer = setInterval(function() {
				if (/loaded|complete/.test(document.readyState)) {
					init(); // call the onload handler
				}
			}, 10);
		}
	
		// for other browsers
		window.onload = init;
	  
		// create event function stack
		window.__load_events = [];
	}
   
	// add function to event stack
	window.__load_events.push(func);
}