/* Funcionamento do menu dropdown para IE 6 */
over = function() {
	var sfEls = document.getElementById("menu").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		if(sfEls[i].getAttribute("nivel") == "1"){
			sfEls[i].onmouseover=function() {
				this.className+=" over";
			}
			sfEls[i].onmouseout=function() {
				this.className=this.className.replace(new RegExp(" over\\b"), "");
			}
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", over);