var timeout    = 500;

var closetimer = 0;

var ddmenuitem = 0;



function jsddm_open()

{  jsddm_canceltimer();

   jsddm_close();

   ddmenuitem = $(this).find('ul').css('visibility', 'visible');}



function jsddm_close()

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



function jsddm_timer()

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



function jsddm_canceltimer()

{  if(closetimer)

   {  window.clearTimeout(closetimer);

      closetimer = null;}}



$(document).ready(function()

{  $('#jsddm > li').bind('mouseover', jsddm_open)

   $('#jsddm > li').bind('mouseout',  jsddm_timer)});



document.onclick = jsddm_close;