var idMenu=0;
var timeout=500;
var closetimer=0;

function mostraMenu(id){
	
	// Oculta o menu antigo
	if(idMenu) idMenu.style.display="none";
	
	// Mostra o submenu
	idMenu=document.getElementById(id);
	idMenu.style.display="block";
}


function closeMenu(){
	if(idMenu.style.display=="block") idMenu.style.display="none";
}

function mclosetime(){
	closetimer = window.setTimeout(closeMenu, timeout);
}

// cancel close timer
function mcancelclosetime(){
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}