if (document.images) {
  image1on = new Image();
  image1on.src = "images/home_on.gif";
  image2on = new Image();
  image2on.src = "images/clicker_on.gif";
  image3on = new Image();
  image3on.src = "images/tailwaggers_on.gif";
  image3bon = new Image();
  image3bon.src = "images/class_overview_on.gif";
  image4on = new Image();
  image4on.src = "images/class1_on.gif";
  image5on = new Image();
  image5on.src = "images/class2_on.gif";
  image6on = new Image();
  image6on.src = "images/class3_on.gif";
  image7on = new Image();
  image7on.src = "images/class4_on.gif";
  image8on = new Image();
  image8on.src = "images/class5_on.gif";
  image9on = new Image();
  image9on.src = "images/class6_on.gif";
  image10on = new Image();
  image10on.src = "images/class7_on.gif";
  image11on = new Image();
  image11on.src = "images/contact_on.gif";
  image12on = new Image();
  image12on.src = "images/store_on.gif";
  image13on = new Image();
  image13on.src = "images/resources_on.gif";
  image14on = new Image();
  image14on.src = "images/topsites_on.gif";
  image15on = new Image();
  image15on.src = "images/guestbook_on.gif";
  image16on = new Image();
  image16on.src = "images/pictures_on.gif";
  image17on = new Image();
  image17on.src = "images/topeka_vets_on.gif";

  image1off = new Image();
  image1off.src = "images/home.gif";
  image2off = new Image();
  image2off.src = "images/clicker.gif";
  image3off = new Image();
  image3off.src = "images/tailwaggers.gif";
  image3boff = new Image();
  image3boff.src = "images/class_overview.gif";
  image4off = new Image();
  image4off.src = "images/class1.gif";
  image5off = new Image();
  image5off.src = "images/class2.gif";
  image6off = new Image();
  image6off.src = "images/class3.gif";
  image7off = new Image();
  image7off.src = "images/class4.gif";
  image8off = new Image();
  image8off.src = "images/class5.gif";
  image9off = new Image();
  image9off.src = "images/class6.gif";
  image10off = new Image();
  image10off.src = "images/class7.gif";
  image11off = new Image();
  image11off.src = "images/contact.gif";
  image12off = new Image();
  image12off.src = "images/store.gif";
  image13off = new Image();
  image13off.src = "images/resources.gif";
  image14off = new Image();
  image14off.src = "images/topsites.gif";
  image15off = new Image();
  image15off.src = "images/guestbook.gif";
  image16off = new Image();
  image16off.src = "images/pictures.gif";
  image17off = new Image();
  image17off.src = "images/topeka_vets.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");
    }
  }
}