var timeout	= 500;
var timeout2 = 0;
var closetimer	= 0;
var closetimer2 = 0;
var ddmenuitem	= 0;
var ddmenuitem2 = 0;

// close showed layer
function mclose()
{
	if(ddmenuitem) {ddmenuitem.style.visibility = 'hidden';}
}
// go close timer
function mclosetime()
{
	closetimer = window.setTimeout(mclose, timeout);
}
// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

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

	// close old layer
	if(ddmenuitem) {ddmenuitem.style.visibility = 'hidden';}

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';

}



function mclose2()
{
	if(ddmenuitem2) {ddmenuitem2.style.visibility = 'hidden';}
}

function mclosetime2()
{
  closetimer2 = window.setTimeout(mclose2, timeout2);
}

function mcancelclosetime2()
{
	if(closetimer2)
	{
		window.clearTimeout(closetimer2);
		closetimer2 = null;
	}
}

function mopen2(id)
{
		mcancelclosetime();
		mcancelclosetime2();
		
		ddmenuitem2 = document.getElementById(id);
		ddmenuitem2.style.visibility = 'visible';
}

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