// Copyright 2006-2007 javascript-array.com

var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;
var arrowright = 0;
var arrowdown = 0;

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

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	if(arrowright) arrowright.style.display = 'inline';
	if(arrowdown) arrowdown.style.display = 'none';

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';
	arrowdown = document.getElementById(downarrow);
	arrowright = document.getElementById(rightarrow);
	oldattrib = arrowright.style.display;
	arrowdown.style.display = 'inline';
	arrowright.style.display = 'none';

}
// close showed layer
function mclose()
{
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	if(arrowright) arrowright.style.display = 'inline';
	if(arrowdown) arrowdown.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;