function IEHoverPseudo() {
	var navItems = document.getElementById("menu").getElementsByTagName("li");
	for ( var i = 0; i < navItems.length; i++) {
		if (navItems[i].className == "submenu") {
			navItems[i].onmouseover = function() {
				this.className += " over";
			}
			navItems[i].onmouseout = function() {
				this.className = "submenu";
			}
		}
	}
}
adicionarEventoOnLoad(IEHoverPseudo);