if (document.images) {
  image1on = new Image();
  image1on.src = "menus/about_over.gif";
  image2on = new Image();
  image2on.src = "menus/vision_over.gif";
  image3on = new Image();
  image3on.src = "menus/resource_over.gif";
  image4on = new Image();
  image4on.src = "menus/comment_over.gif";
  image5on = new Image();
  image5on.src = "menus/workshop_over.gif";
  image6on = new Image();
  image6on.src = "menus/links_over.gif";
  image7on = new Image();
  image7on.src = "menus/survey_over.gif";
  image8on = new Image();
  image8on.src = "menus/submit_over.gif";
  image9on = new Image();
  image9on.src = "menus/clear_over.gif";
  image10on = new Image();
  image10on.src = "menus/r3_over.gif";
  image11on = new Image();
  image11on.src = "menus/r4_over.gif";
  image12on = new Image();
  image12on.src = "menus/r5_over.gif";
  image13on = new Image();
  image13on.src = "menus/r6_over.gif";
  image14on = new Image();
  image14on.src = "menus/r7_over.gif";

  image1off = new Image();
  image1off.src = "menus/about.gif";
  image2off = new Image();
  image2off.src = "menus/vision.gif";
  image3off = new Image();
  image3off.src = "menus/resource.gif";
  image4off = new Image();
  image4off.src = "menus/comment.gif";
  image5off = new Image();
  image5off.src = "menus/workshop.gif";
  image6off = new Image();
  image6off.src = "menus/links.gif";
  image7off = new Image();
  image7off.src = "menus/survey.gif";
  image8off = new Image();
  image8off.src = "menus/submit.gif";
  image9off = new Image();
  image9off.src = "menus/clear.gif";
  image10off = new Image();
  image10off.src = "menus/r3.gif";
  image11off = new Image();
  image11off.src = "menus/r4.gif";
  image12off = new Image();
  image12off.src = "menus/r5.gif";
  image13off = new Image();
  image13off.src = "menus/r6.gif";
  image14off = new Image();
  image14off.src = "menus/r7.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");
    }
  }
}