// Au chargement du document, le code javascript suivant sera exécuté 
$(document).ready(   

function() 
{ 

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() 

 
{  $('#Menutop > li').bind('mouseover', MenuDeroulant_open) 
 
$('#Menutop > li').bind('mouseout',  MenuDeroulant_timer)}); 
document.onclick = MenuDeroulant_close; 
});