Normal3 = new Image();
Normal3.src = "pics/goleft.jpg";
Highlight3 = new Image();
Highlight3.src = "pics/golefton.jpg";

Normal4 = new Image();
Normal4.src = "pics/goright.jpg";
Highlight4 = new Image();
Highlight4.src = "pics/gorighton.jpg";

function Bildwechsel(Bildnr,Bildobjekt) {
 window.document.images[Bildnr].src = Bildobjekt.src;
}