var edit = false;
// Retourne l'objet id
function $(id) {
  if (document.getElementById != null) {
	return document.getElementById(id);
  }
  else if (document.all != null) {
	return document.all[id];
  }
  else {
	return null;
  }
}
   function toggle_edit (section) {
        var edit = $ (section);

        if (edit != null) {
          if (edit.style.visibility == "hidden") {
            edit.style.visibility = "visible";
            edit.style.display = "block";
          } else {
            edit.style.visibility = "hidden";
            edit.style.display = "none";
          }
        }
      }

      function toggle_show (section) {
        var show = $(section + "_show");
        var hide = $ (section + "_hide");
   
        if ((show != null) && (hide != null)) {
          if (show.style.visibility == "hidden") {
            show.style.visibility = "visible";
            show.style.display = "inline";
            hide.style.visibility = "hidden";
            hide.style.display = "none";
          } else {
            hide.style.visibility = "visible";
            hide.style.display = "inline";
            show.style.visibility = "hidden";
            show.style.display = "none";
          }
        }
      }