over = function() {
	
	var itens = document.getElementById("for-menu").getElementsByTagName("LI");
	
	for (var i=0; i<itens.length;i++) {
		
		itens[i].onmouseover=function() {
			this.className += " over";
		}
		itens[i].onmouseout=function() {
			this.className = this.className.replace(new RegExp(" over\\b"), "");
		}
	}
	
}
if (window.attachEvent) {
	 window.attachEvent("onload", over);
}