sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfHover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfHover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);
function MantemHoverMenu(MenuId, cssPadraoHover) {
    if (!cssPadraoHover) cssPadraoHover = 'MenuTopoHover';
    document.getElementById(MenuId).className = cssPadraoHover;
}
function RemoveHoverMenu(MenuId, cssPadrao) {
    if (!cssPadrao) cssPadrao = '';
    document.getElementById(MenuId).className = cssPadrao;
}