var timeout         = 500;
var closetimer		= 0;
var drMenuitem      = 0;

function drMenu_open()
{	drMenu_canceltimer();
	drMenu_close();
	drMenuitem = jQuery(this).find('ul').eq(0).css('visibility', 'visible');}
	//jQuery('#interfaceholder').css('visibility', 'visible');}

function drMenu_close()
{	//jQuery('#interfaceholder').css('visibility', 'hidden');
	if(drMenuitem) drMenuitem.css('visibility', 'hidden');
	}

function drMenu_timer()
{	closetimer = window.setTimeout(drMenu_close, timeout);}

function drMenu_canceltimer()
{	if(closetimer)
	{	window.clearTimeout(closetimer);
		closetimer = null;}}

document.onclick = drMenu_close;