function subMn_mostrar(divname, tdname, varX, varY) {
	var div = document.getElementById(divname);
	div.style.visibility='visible';
	if (varX) div.style.marginLeft = varX+"px";
	if (varY) div.style.marginTop = varY+"px";
}
function subMn_ocultar(divname) {
	document.getElementById(divname).style.visibility='hidden';
}

function setHoverLI(divname) {
	//aplica ações de :hover na árvore abaixo:
	//divname > li
	var div = document.getElementById(divname);
	var li_s = div.getElementsByTagName('li');
	for(i=0;i<li_s.length;i++){
		li_s[i].funcOver = (li_s[i].onmouseover) ? li_s[i].onmouseover : function () {};
		li_s[i].onmouseover = function (){ this.className = 'hover';this.funcOver();}
		li_s[i].funcOut = (li_s[i].onmouseout) ? li_s[i].onmouseout : function () {};
		li_s[i].onmouseout  = function (){ this.className = null;this.funcOut();}

	}
}