 <!-- Hide from old browsers
  firstpic = new Image(); firstpic.src = "grafik/2.jpg";
  secondpic = new Image(); secondpic.src = "grafik/1.jg";
  threepic = new Image();threepic.src = "grafik/1.jpg";
  function showfirst() { document.exchange.src = firstpic.src }
  function showsecond() { document.exchange.src = secondpic.src }
  function showthree() { document.exchange.src = threepic.src }
 // end hiding -->