var timeout         = 0;
var closetimer		= 0;
var ddmenuitem      = 0;
var mainmenu = 0;

// open hidden layer
function menu_open(id,menuid)
{	
	// cancel close timer
	menu_cancel_close();

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	if(mainmenu) mainmenu.className='main';
	
	
	mainmenu = document.getElementById(menuid);
	mainmenu.className = "selectedmain";
	
	// 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';
	if(mainmenu) mainmenu.className='main';
}

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

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

// open hidden layer
function menu_open1(menuid)
{	
	// cancel close timer
	menu_cancel_close();

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	if(mainmenu) mainmenu.className='main';
	
	
	mainmenu = document.getElementById(menuid);
	mainmenu.className = "selectedmain";
	
}


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