/*
 * addLoadEvent function taken from Simon Willison
 * http://simonwillison.net/2004/May/26/addLoadEvent/
 */

function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			if (oldonload) {
				oldonload();
			}
			func();
		}
	}
}

/*
 * document.getElementsByClassName function taken from NetLobo
 * http://www.netlobo.com/javascript_getelementsbyclassname.html
 */

document.getElementsByClassName = function(clsName) {
	var retVal = new Array();
	var elements = document.getElementsByTagName("*");
	for(var i = 0;i < elements.length;i++) {
		if(elements[i].className.indexOf(" ") >= 0){
			var classes = elements[i].className.split(" ");
			for(var j = 0;j < classes.length;j++){
				if(classes[j] == clsName)
					retVal.push(elements[i]);
			}
		} else if(elements[i].className == clsName)
			retVal.push(elements[i]);
	}
	return retVal;
}

/*
 * Simple shorthand for document.getElementById
 */

function $(element) {
	return document.getElementById(element);
}