var pList = new Array("wandl", "wandr");
function PreloadImages(suf)
{
 for (var i=0; i< pList.length; i++) {
   this[pList[i]] = new Image()
   this[pList[i]].src="../images/" + pList[i] + suf
 }
 return this;
}
function ImageLoader() {
 norm = new PreloadImages('n.gif')
 over = new PreloadImages('i.gif')
}
function revImg(I) {
 if (document.images) {
   document.images[I].src="../images/" + I + "i.gif"
   }
 }
function norImg(I) {
 if (document.images) {
  document.images[I].src="../images/" + I + "n.gif"
   }
}