function setImage(imgName, type) {
  if (document.images) {
    if (type == "hilite") {
      document.images[imgName].src = imagesHilite[imgName].src
      return true;
    } else if (type == "normal") {
      document.images[imgName].src = imagesNormal[imgName].src
      return true;
    }
  }
  return false;
}