// Copyright 2006-2007 javascript-array.com

var timeout	= 250;
var closetimer	= 0;
var closetimer_sub = 0;
var ddmenuitem	= 0;
var ddmenuitem2 = 0;

var menu1Shown = false;
var menu2Shown = false;

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

	// close old layer
	if (ddmenuitem)  ddmenuitem.style.visibility  = 'hidden';
	if (ddmenuitem2) ddmenuitem2.style.visibility = 'hidden';

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';
	menu1Shown = true;
}

function mopen_sub(id)
{	
	// cancel close timer
	mcancelclosetime_sub();

	// close old layer
	if(ddmenuitem2) ddmenuitem2.style.visibility = 'hidden';

	// get new layer and show it
	ddmenuitem2 = document.getElementById(id);
	ddmenuitem2.style.visibility = 'visible';	
	menu2Shown = true;
}

// close showed layer
function mclose()
{
	if (menu1Shown && !menu2Shown && ddmenuitem) {
		ddmenuitem.style.visibility = 'hidden';
		menu1Shown = false;
	}
}

function mclose_sub()
{				
	if(ddmenuitem2 && menu2Shown) {
		ddmenuitem2.style.visibility = 'hidden';
		menu2Shown = false;
	}
}

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

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

function mclosetime_sub()
{
	closetimer_sub = window.setTimeout(mclose_sub, timeout);
}

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

function mcancelclosetime_sub()
{
	if(closetimer_sub)
	{
		window.clearTimeout(closetimer_sub);
		closetimer_sub = null;
	}
}						

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