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


function MenuDeroulant_open()

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


function MenuDeroulant_close()

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


function MenuDeroulant_timer()

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


function MenuDeroulant_canceltimer()

{  if(closetimer)

   {  window.clearTimeout(closetimer);

      closetimer = null;}}


$(document).ready(function()

{  $('#MenuDeroulant > li').bind('mouseover', MenuDeroulant_open)
	$('#MenuDeroulant > li').bind('mouseout',  MenuDeroulant_timer)});