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


function nav_open()

{  nav_canceltimer();

	nav_close();

   ddmenuitem = $(this).find('ul').css('display', 'block');}



function nav_close()

{  if(ddmenuitem) ddmenuitem.css('display', 'none');}



function nav_timer()

{  closetimer = window.setTimeout(nav_close, timeout);}



function nav_canceltimer()

{  if(closetimer)

   {  window.clearTimeout(closetimer);

      closetimer = null;}}



$(document).ready(function()

{  $('#nav > li').bind('mouseover', nav_open)

   $('#nav > li').bind('mouseout',  nav_timer)

   $('#navsec > li').bind('mouseover', nav_open)

   $('#navsec > li').bind('mouseout',  nav_timer) 

});



document.onclick = nav_close;