var fPreloadImages = false;

function newImage(img_src) {
  if (document.images) {
    tmp_img = new Image();
    tmp_img.src = img_src;
  }
}


function changeImages(img, img_src) {
  if (document.images) {
    img.src = img_src;
  }
}

// create a reference to an object in IE and most modern browsers
function getRef(id) {
        return (document.getElementById ? document.getElementById(id) : document.all[id]);
}