function menu2()
{
  document.getElementById("sousmenu2").style.visibility="visible";
  document.getElementById("sousmenu3").style.visibility="hidden";
}

function outmenu2(e)
{
    document.getElementById("sousmenu2").style.visibility="hidden";
}

function menu3()
{
  document.getElementById("sousmenu3").style.visibility="visible";
  document.getElementById("sousmenu2").style.visibility="hidden";
}

function outmenu3()
{
  document.getElementById("sousmenu3").style.visibility="hidden";
}