if (document.images) {
  side_image1on = new Image();
  side_image1on.src = "/images/demo_20_nav_whatis_r.gif";

  side_image2on = new Image();
  side_image2on.src = "/images/demo_20_nav_tellwhere_r.gif";

  side_image3on = new Image();
  side_image3on.src = "/images/demo_20_nav_tellwhat_r.gif";

  side_image4on = new Image();
  side_image4on.src = "/images/demo_20_nav_pick_r.gif";

  side_image5on = new Image();
  side_image5on.src = "/images/demo_20_nav_getdetails_r.gif";

  side_image6on = new Image();
  side_image6on.src = "/images/demo_20_nav_getdirect_r.gif";

  side_image7on = new Image();
  side_image7on.src = "/images/demo_20_nav_personalize_r.gif";

  side_image8on = new Image();
  side_image8on.src = "/images/demo_20_nav_switch_r.gif";

  side_image9on = new Image();
  side_image9on.src = "/images/demo_20_nav_uptodate_r.gif";

  side_image10on = new Image();
  side_image10on.src = "/images/demo_20_nav_thanks_r.gif";

  side_image1off = new Image();
  side_image1off.src = "/images/demo_20_nav_whatis.gif";

  side_image2off = new Image();
  side_image2off.src = "/images/demo_20_nav_tellwhere.gif";

  side_image3off = new Image();
  side_image3off.src = "/images/demo_20_nav_tellwhat.gif";

  side_image4off = new Image();
  side_image4off.src = "/images/demo_20_nav_pick.gif";

  side_image5off = new Image();
  side_image5off.src = "/images/demo_20_nav_getdetails.gif";

  side_image6off = new Image();
  side_image6off.src = "/images/demo_20_nav_getdirect.gif";

  side_image7off = new Image();
  side_image7off.src = "/images/demo_20_nav_personalize.gif";

  side_image8off = new Image();
  side_image8off.src = "/images/demo_20_nav_switch.gif";

  side_image9off = new Image();
  side_image9off.src = "/images/demo_20_nav_uptodate.gif";

  side_image10off = new Image();
  side_image10off.src = "/images/demo_20_nav_thanks.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");
    }
  }
}