<!--
if (document.images) {
  homeOn = new Image();
  homeOn.src = "home_on.gif";
  homeOff = new Image();
  homeOff.src = "home_off.gif";

  newsOn = new Image();
  newsOn.src = "button_news_on.gif";
  newsOff = new Image();
  newsOff.src = "button_news_off.gif";

  awardsOn = new Image();
  awardsOn.src = "button_awards_on.gif";
  awardsOff = new Image();
  awardsOff.src = "button_awards_off.gif";

  linksOn = new Image();
  linksOn.src = "button_links_on.gif";
  linksOff = new Image();
  linksOff.src = "button_links_off.gif";

  collectionOn = new Image();
  collectionOn.src = "button_images_on.gif";
  collectionOff = new Image();
  collectionOff.src = "button_images_off.gif";

  tutorialOn = new Image();
  tutorialOn.src = "button_tutorial_on.gif";
  tutorialOff = new Image();
  tutorialOff.src = "button_tutorial_off.gif";
}
function turnOn(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "On.src");
  }
}
function turnOff(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "Off.src");
  }
}
// -->