if (document.images) {
  image1on = new Image();
  image1on.src = "images/sidehomeon2a.gif";

  image1off = new Image();
  image1off.src = "images/sidehomeoff2a.gif";

  image2on = new Image();
  image2on.src = "images/sideabouton2a.gif";

  image2off = new Image();
  image2off.src = "images/sideaboutoff2a.gif";

  image3on = new Image();
  image3on.src = "images/sideserviceson2a.gif";

  image3off = new Image();
  image3off.src = "images/sideservicesoff2a.gif";

  image4on = new Image();
  image4on.src = "images/sidescheduleon2a.gif";

  image4off = new Image();
  image4off.src = "images/sidescheduleoff2a.gif";

  image5on = new Image();
  image5on.src = "images/sidedirectionson2a.gif";

  image5off = new Image();
  image5off.src = "images/sidedirectionsoff2a.gif";

  image6on = new Image();
  image6on.src = "images/sideresourceson2a.gif";

  image6off = new Image();
  image6off.src = "images/sideresourcesoff2a.gif";

  image7on = new Image();
  image7on.src = "images/sidecontacton2a.gif";

  image7off = new Image();
  image7off.src = "images/sidecontactoff2a.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");
    }
  }
}