if (document.images) {
  image1on = new Image();
  image1on.src = "img/menu-top2_03.gif";

  image2on = new Image();
  image2on.src = "img/menu-top2_04.gif";

  image3on = new Image();
  image3on.src = "img/menu-top2_05.gif";

  image4on = new Image();
  image4on.src = "img/menu-bottom2_19.gif";

  image5on = new Image();
  image5on.src = "img/menu-bottom2_20.gif";

  image6on = new Image();
  image6on.src = "img/menu-bottom2_21.gif";
  
  image7on = new Image();
  image7on.src = "img/menu-bottom2_22.gif";
  
  image8on = new Image();
  image8on.src = "img/menu-bottom2_24.gif";
  
  image9on = new Image();
  image9on.src = "img/menu-bottom2_25.gif";
  
  image10on = new Image();
  image10on.src = "img/menu-bottom2_26.gif";
  
  image11on = new Image();
  image11on.src = "img/front-011.jpg";
  
  image12on = new Image();
  image12on.src = "img/front-022.jpg";
  
  image13on = new Image();
  image13on.src = "img/front-033.jpg";
  
  image14on = new Image();
  image14on.src = "img/front-044.jpg";
  
  image1off = new Image();
  image1off.src = "img/menu-top_03.gif";

  image2off = new Image();
  image2off.src = "img/menu-top_04.gif";

  image3off = new Image();
  image3off.src = "img/menu-top_05.gif";

  image4off = new Image();
  image4off.src = "img/menu-bottom_19.gif";

  image5off = new Image();
  image5off.src = "img/menu-bottom_20.gif";

  image6off = new Image();
  image6off.src = "img/menu-bottom_21.gif";
  
  image7off = new Image();
  image7off.src = "img/menu-bottom_22.gif";
  
  image8off = new Image();
  image8off.src = "img/menu-bottom_24.gif";
  
  image9off = new Image();
  image9off.src = "img/menu-bottom_25.gif";
  
  image10off = new Image();
  image10off.src = "img/menu-bottom_26.gif";
  
  image11off = new Image();
  image11off.src = "img/front-01.jpg";
  
  image12off = new Image();
  image12off.src = "img/front-02.jpg";
  
  image13off = new Image();
  image13off.src = "img/front-03.jpg";
  
  image14off = new Image();
  image14off.src = "img/front-04.jpg";
  
  
}

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");
  }
}