var ObjetImage, ObjetNumero, BaseNom, NbIm, ObjetEnCours;
var MaxIm = 12;

function Init() {
  var i;
  ObjetImage = document.images[3];
  ObjetNumero = document.images[4]; 
  for (i=NbIm+1; i<=MaxIm; i++) {
    ObjetEnCours = document.getElementById("P"+i);
    ObjetEnCours.style.visibility="hidden"; } }

function Affiche(num) {
  var ImageAct = BaseNom + num + ".jpg";
  var ImageNum = "../Outils/M" + num + ".jpg";
  ObjetImage.src= ImageAct;
  ObjetNumero.src = ImageNum; }