if (document.images) {
  Blank = new Image();
  Blank.src = "gallery/blank.gif";

  GallerieOn = new Image();
  GallerieOn.src = "images/menu-gallerie-on.gif";

  AProposOn = new Image();
  AProposOn.src = "images/menu-apropos-on.gif";

  ContactOn = new Image();
  ContactOn.src = "images/menu-contact-on.gif";

  ExpositionsOn = new Image();
  ExpositionsOn.src = "images/menu-expositions-on.gif";



  GallerieOff = new Image();
  GallerieOff.src = "images/menu-gallerie.gif";

  AProposOff = new Image();
  AProposOff.src = "images/menu-apropos.gif";

  ContactOff = new Image();
  ContactOff.src = "images/menu-contact.gif";

  ExpositionsOff = new Image();
  ExpositionsOff.src = "images/menu-expositions.gif";
}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}