loadList = function() {
	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 emailValidate(ele) {
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(ele.email.value)){
	return true;
}
	alert("Please enter a valid email address.")
	return false;
}