function newImage(arg) {
   if (document.images) {
      rslt = new Image();
      rslt.src = arg;
      return rslt;
   }
}

function changeImages() {
   if (document.images && (preloadFlag == true)) {
      for (var i=0; i<changeImages.arguments.length; i+=2) {
         document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
      }
   }
}

var preloadFlag = false;
function preloadImages() {
   if (document.images) {
      menu2_03_over = newImage("/images/menu2_03-over.gif");
      menu2_05_over = newImage("/images/menu2_05-over.gif");
      menu2_07_over = newImage("/images/menu2_07-over.gif");
      menu2_09_over = newImage("/images/menu2_09-over.gif");
      menu2_11_over = newImage("/images/menu2_11-over.gif");
      menu2_13_over = newImage("/images/menu2_13-over.gif");
      preloadFlag = true;
   }
}