loadList = function() {
	if (document.all && document.getElementById) {
		var nav = document.getElementById("nav");
		for (i=0; i<nav.childNodes.length; i++) {
			node = nav.childNodes[i];
			if (node.nodeName=="LI" &&  node.className.indexOf('parent')!=-1) {
				node.onmouseover=function() {
					this.className+=" over";
				}
				node.onmouseout=function() {
					this.className=this.className.replace(" over", "");
				}
			}
		}
	}
}
window.onload=loadList; 

function getElementsByClassName(classname) {
	var node = document.getElementsByTagName("body")[0];
	var a = [];
	var re = new RegExp('\\b' + classname + '\\b');
	var els = node.getElementsByTagName("*");
	for(var i=0,j=els.length; i<j; i++)
	if(re.test(els[i].className))a.push(els[i]);
	return a;
}