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).ready(function ()
{
  $('#ul_sottomenu_complementi > li').bind('mouseover', jsddm_open)
  $('#ul_sottomenu_complementi > li').bind('mouseout', jsddm_timer)
});

document.onclick = jsddm_close;