var timeout         = 500;
var closetimer		= 0;
var ddmenuitem      = 0;
//var keepHL;


// close when user clicks outside
document.onclick = menuclose;

// open hidden
function menuopen(id)
{	
	// cancel close timer
	menucancelclosetime();

	// close old
	if(ddmenuitem)
	{ 
		ddmenuitem.style.visibility = 'hidden';
		keepHL.style.background = '';
	}

	// get menu and show
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';
	keepHL = document.getElementById(id+'head');
	keepHL.style.background = '#333333';

}
// close visible
function menuclose()
{
	if(ddmenuitem)
	{
		ddmenuitem.style.visibility = 'hidden';
		keepHL.style.background = '';
	}
}

// close timer
function menuclosetime()
{
	closetimer = window.setTimeout(menuclose, timeout);
}

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

// close old menu
function singlecloseold()
{
	if(ddmenuitem)
	{
		ddmenuitem.style.visibility = 'hidden';
		keepHL.style.background = '';
	}
}