function PopupCentrer(page,largeur,hauteur) {
  var top=(screen.height-hauteur)/2;
  var left=(screen.width-largeur)/2;
  var w=window.open(page,"name", "top="+top+",left="+left+",width="+largeur+",height="+hauteur+",resizable=yes,scrollbars=yes");
  w.document.close();
    w.focus();
}