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) {
    topmenu1_over = newImage("./layouts/wellnesslife/images/topmenu1_over.gif");
    topmenu2_over = newImage("./layouts/wellnesslife/images/topmenu2_over.gif");
    topmenu3_over = newImage("./layouts/wellnesslife/images/topmenu3_over.gif");
    topmenu4_over = newImage("./layouts/wellnesslife/images/topmenu4_over.gif");
    topmenu5_over = newImage("./layouts/wellnesslife/images/topmenu5_over.gif");
    preloadFlag = true;
  }
}