var timeout	= 300;
var closetimer	= 0;
var ddmenuitem	= 0;
var defaultitem = 0;
var Section = 0;
var currentSection = 0;
var currentMenu = 0;

// open hidden layer
function mopen(id)
{	
	currentSection = ('section'+Section);
	currentMenu = ('menu'+Section);
	
	// cancel close timer
	mcancelclosetime();

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	
	
	document.getElementById(currentMenu).style.visibility= 'hidden'; 
	
	document.getElementById(currentSection).className= 'inactive';

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

}
// close showed layer
function mclose()
{
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	defaultitem = document.getElementById(currentMenu);
	defaultitem.style.visibility = 'visible';
	document.getElementById(currentSection).className= '';
	
}

// 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;