var timeout         = 500;
var closetimer		= 0;
var ddmenuitem      = 0;
var divContainer    = 0;

// open hidden layer
function mopen(id)
{	
	// cancel close timer
	//mcancelclosetime();

	// close old layer
	if(ddmenuitem) 
	{
	    divContainer = document.getElementById(ddmenuitem);
	    divContainer.style.display = "none";
	}

	// get new layer and show it
	ddmenuitem = id;
	//ddmenuitem.style.visibility = 'visible';
	Effect.Appear(id, { duration: 0.5 });
}
// close showed layer
function mclose()
{
	if(ddmenuitem) 
	{
	    divContainer = document.getElementById(ddmenuitem);
	    divContainer.style.display = "none";
	}
}

// go close timer
function mclosetime()
{
	closetimer = window.setTimeout(mclose, timeout);
}

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

// close layer when click-out
document.onclick = mclose; 
// -->