if (document.images) {
  image1on = new Image(); image1on.src = "images/audio2.gif";
  image2on = new Image(); image2on.src = "images/nav1/tours1.gif";
  image3on = new Image(); image3on.src = "images/nav1/upcoming1.gif";
  image4on = new Image(); image4on.src = "images/nav1/about1.gif";
  image5on = new Image(); image5on.src = "images/nav1/where1.gif";
  image6on = new Image(); image6on.src = "images/nav1/things1.gif";
  image7on = new Image(); image7on.src = "images/nav1/outdoor1.gif";
  image8on = new Image(); image8on.src = "images/nav1/dining1.gif";
  image9on = new Image(); image9on.src = "images/nav1/group1.gif";
  image10on = new Image(); image10on.src = "images/nav1/legends1.gif";
  image11on = new Image(); image11on.src = "images/nav1/souvenirs1.gif";
  image12on = new Image(); image12on.src = "images/nav1/joinnews1.gif";
  image13on = new Image(); image13on.src = "images/nav1/taketour1.gif";
  image14on = new Image(); image14on.src = "images/nav1/moreevents1.gif";

  image1off = new Image();  image1off.src = "images/audio1.gif";
  image2off = new Image();  image2off.src = "images/nav1/tours.gif";
  image3off = new Image();  image3off.src = "images/nav1/upcoming.gif";
  image4off = new Image();  image4off.src = "images/nav1/about.gif";
  image5off = new Image();  image5off.src = "images/nav1/where.gif";
  image6off = new Image();  image6off.src = "images/nav1/things.gif";
  image7off = new Image();  image7off.src = "images/nav1/outdoor.gif";
  image8off = new Image();  image8off.src = "images/nav1/dining.gif";
  image9off = new Image();  image9off.src = "images/nav1/group.gif";
  image10off = new Image();  image10off.src = "images/nav1/legends.gif";
  image11off = new Image();  image11off.src = "images/nav1/souvenirs.gif";
  image12off = new Image();  image12off.src = "images/nav1/joinnews.gif";
  image13off = new Image();  image13off.src = "images/nav1/taketour.gif";
  image14off = new Image();  image14off.src = "images/nav1/moreevents.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");  }}
    function clickOn(imageName) {
      if (document.images) {
      document[imageName].src = eval(imageName + "click.src");  }}