if (document.images) {
  image01on = new Image();
  image01on.src = "/images/nav_01r.png";

  image02on = new Image();
  image02on.src = "/images/nav_02r.png";

  image03on = new Image();
  image03on.src = "/images/nav_03r.png";

  image04on = new Image();
  image04on.src = "/images/nav_04r.gif";

  image05on = new Image();
  image05on.src = "/images/nav_05r.png";

  image06on = new Image();
  image06on.src = "/images/nav_06r.gif";
  
  image03projon = new Image();
  image03projon.src = "/images/nav3_03r.gif";
  
  image03servon = new Image();
  image03servon.src = "/images/nav2_03r.gif";

  image04servon = new Image();
  image04servon.src = "/images/nav2_04r.gif";

  image05servon = new Image();
  image05servon.src = "/images/nav2_05r.gif";

  image06servon = new Image();
  image06servon.src = "/images/nav2_06r.gif";
  
  image07on = new Image();
  image07on.src = "/images/nav_07r.png";
  
  image08on = new Image();
  image08on.src = "/images/nav_08r.gif";
  
  image09on = new Image();
  image09on.src = "/images/nav_09r.png";  
  
  image10on = new Image();
  image10on.src = "/images/nav_10r.png";
  
  image11on = new Image();
  image11on.src = "/images/nav_11r.png";
  
  image12on = new Image();
  image12on.src = "/images/nav_12r.png";

  image01off = new Image();
  image01off.src = "/images/nav_01.png";

  image02off = new Image();
  image02off.src = "/images/nav_02.png";

  image03off = new Image();
  image03off.src = "/images/nav_03.png";

  image04off = new Image();
  image04off.src = "/images/nav_04.gif";

  image05off = new Image();
  image05off.src = "/images/nav_05.png";

  image06off = new Image();
  image06off.src = "/images/nav_06.gif";
  
  image03projoff = new Image();
  image03projoff.src = "/images/nav3_03.gif";
  
  image03servoff = new Image();
  image03servoff.src = "/images/nav2_03.gif";

  image04servoff = new Image();
  image04servoff.src = "/images/nav2_04.gif";

  image05servoff = new Image();
  image05servoff.src = "/images/nav2_05.gif";

  image06servoff = new Image();
  image06servoff.src = "/images/nav2_06.gif";

  image07off = new Image();
  image07off.src = "/images/nav_07.png";
  
  image08off = new Image();
  image08off.src = "/images/nav_08.gif";
  
  image09off = new Image();
  image09off.src = "/images/nav_09.png";

  image10off = new Image();
  image10off.src = "/images/nav_10.png";
  
  image11off = new Image();
  image11off.src = "/images/nav_11.png";
  
  image12off = new Image();
  image12off.src = "/images/nav_12.png";
}

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");
    }
  }
}