var timer = 0;
var currentMenu = 0;
var currentDropMenu = 0;

function mo(id) //Menu Open
{
	stopTimeout();	
	closeMenu();
	currentDropMenu = document.getElementById(id);
	currentDropMenu.style.visibility = 'visible';
}

function closeMenu() 
{
	if(currentDropMenu)	{
		currentDropMenu.style.visibility = 'hidden';
	}
}

function mc() 
{
	timer = window.setTimeout(closeMenu, 100);
}

function stopTimeout() 
{
	if(timer) {
		window.clearTimeout(timer);
		timer = null;
	}
}

document.onclick = closeMenu;