function open_popup(name, internal_name)
{
	window.open (name, internal_name, config='height=650, width=800, toolbar=no, menubar=no, scrollbars=no, resizable=no, location=no, directories=no, status=no')
}

function displayHideElement(id) {
  
  var elt = document.getElementById(id);

  // On ouvre ou ferme
  if (elt.style.display == "none"){
    // Cas ou le tableau est caché
    elt.style.display = ""
  } else {
    // On le cache
    elt.style.display = "none"
   }
}