// Copyright 2006-2007 javascript-array.com

var demci_timeout	= 500;
var demci_closetimer	= 0;
var demci_ddmenuitem	= 0;

// open hidden layer
function demci_mopen(id)
{	
	// cancel close timer
	demci_mcancelclosetime();

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

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

}
// close showed layer
function demci_mclose()
{
	if(demci_ddmenuitem) demci_ddmenuitem.style.visibility = 'hidden';
}

// go close timer
function demci_mclosetime()
{
	demci_closetimer = window.setTimeout(demci_mclose, demci_timeout);
}

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

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