var timeout    = 500;
var closetimer = 0;
var ddmenuitem = 0;
function navBar_open()
{
	navBar_canceltimer();
	navBar_close();
	ddmenuitem = $(this).find('ul').css('visibility', 'visible');
}

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

function navBar_timer()
{  
	closetimer = window.setTimeout(navBar_close, timeout);
}

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

$(document).ready(
	function()
	{  
		$('#navBar > li').bind('mouseover', navBar_open)
		$('#navBar > li').bind('mouseout',  navBar_timer)
	}
);

document.onclick = navBar_close;