var timeout         = 5000;
var closetimer		= 0;
var ddmenuitem      = 0;

function dat_open()
{	dat_canceltimer();
	dat_close();
	ddmenuitem = $(this).find('ul').eq(0).css('visibility', 'visible');}

function dat_close()
{	if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');}

function dat_timer()
{	closetimer = window.setTimeout(dat_close, timeout);}

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

$(document).ready(function()
{	$('#dat > li').bind('mouseover', dat_open);
	$('#dat > li').bind('mouseout',  dat_timer);});

document.onclick = dat_close;