// JavaScript Document

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

function nav_links_open()
{  
	nav_links_canceltimer();
   	nav_links_close();
  	ddmenuitem = $(this).find('ul').css('visibility', 'visible');
}

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

function nav_links_timer()
{  
	closetimer = window.setTimeout(nav_links_close, timeout);
}

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

$(document).ready(function()
{  
	$('#nav_links > li').bind('mouseover', nav_links_open)
	$('#nav_links > li > ul').css('visibility', 'hidden');
   	$('#nav_links > li').bind('mouseout',  nav_links_timer);
});

document.onclick = nav_links_close;