if (document.images) {
  image1on = new Image();
  image1on.src = "images/home_on.jpg";
  image2on = new Image();
  image2on.src = "images/about_on.jpg";
  image3on = new Image();
  image3on.src = "images/services_on.jpg";
  image4on = new Image();
  image4on.src = "images/contact_on.jpg";
  image5on = new Image();
  image5on.src = "images/terms_on.jpg";
  image6on = new Image();
  image6on.src = "images/faqs_on.jpg";
  image7on = new Image();
  image7on.src = "images/support_on.jpg";
  image8on = new Image();
  image8on.src = "images/members_on.jpg";

  image1off = new Image();
  image1off.src = "images/home.jpg";
  image2off = new Image();
  image2off.src = "images/about.jpg";
  image3off = new Image();
  image3off.src = "images/services.jpg";
  image4off = new Image();
  image4off.src = "images/contact.jpg";
  image5off = new Image();
  image5off.src = "images/terms.jpg";
  image6off = new Image();
  image6off.src = "images/faqs.jpg";
  image7off = new Image();
  image7off.src = "images/support.jpg";
  image8off = new Image();
  image8off.src = "images/members.jpg";

}
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");
    }
  }
}