function MostrarSubmenu(raiz) {
    var sub = document.getElementById('subMenu');
    sub.style.visibility = 'visible';
}

function Recolher() {
    var sub = document.getElementById('subMenu');
    sub.style.visibility = 'hidden';
}

function IrPara(destino) {
    document.open(destino, "_self","",true);
}