if (document.images) {
  image1on = new Image();
  image1on.src = "../images/tophome_on.gif";
  image2on = new Image();
  image2on.src = "../images/tophtml_on.gif";
  image3on = new Image();
  image3on.src = "../images/topflash_on.gif";
  image4on = new Image();
  image4on.src = "../images/topfreeflash_on.gif";
  image5on = new Image();
  image5on.src = "../images/toplogos_on.gif";
  image6on = new Image();
  image6on.src = "../images/topcid_on.gif";
  image7on = new Image();
  image7on.src = "../images/toptopsites_on.gif";
  image8on = new Image();
  image8on.src = "../images/topsearch_on.gif";

  image1off = new Image();
  image1off.src = "../images/tophome_off.gif";
  image2off = new Image();
  image2off.src = "../images/tophtml_off.gif";
  image3off = new Image();
  image3off.src = "../images/topflash_off.gif";
  image4off = new Image();
  image4off.src = "../images/topfreeflash_off.gif";
  image5off = new Image();
  image5off.src = "../images/toplogos_off.gif";
  image6off = new Image();
  image6off.src = "../images/topcid_off.gif";
  image7off = new Image();
  image7off.src = "../images/toptopsites_off.gif";
  image8off = new Image();
  image8off.src = "../images/topsearch_off.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");
    }
  }
}