stored=null;
  storedLocation=null;
  if (document.images!=null){
    arwb=load("http://mweb.ru/images/arrow.gif");
	bull=load("http://mweb.ru/images/bull_over.gif");
  }
  function load(location){
    image=new Image();
    image.src=location;
    return image;
  }
  function show(where,what){
    if (document.images!=null){
      stored=where;
      storedLocation=document.images[where].src;
      document.images[where].src=eval(what+".src");
    }
  }
  function hide(){
    if (document.images!=null && stored != null) document.images[stored].src=storedLocation;
  }