function PopupCentrer(page,largeur,hauteur) {
  var top=(screen.height-hauteur)/2;
  var left=(screen.width-largeur)/2;
  window.open(page, "", "top="+top+", left="+left+", width="+largeur+", height="+hauteur+", resizable=no, location=no, menubar=no, status=no, scrollbars=no, menubar=no");
}