test1 = new Image();
test1.src = "bilder/fb_bi_themen_01.jpg";
test12 = new Image();
test12.src = "bilder/fb_bi_themen_02.gif";

test2 = new Image();
test2.src = "bilder/fb_bi_themen_03.jpg";
test22 = new Image();
test22.src = "bilder/fb_bi_themen_04.gif";

test3 = new Image();
test3.src = "bilder/fb_bi_themen_05.jpg";
test32 = new Image();
test32.src = "bilder/fb_bi_themen_06.gif";

test4 = new Image();
test4.src = "bilder/fb_bi_themen_07.jpg";
test42 = new Image();
test42.src = "bilder/fb_bi_themen_08.gif";

test5 = new Image();
test5.src = "bilder/fb_bi_themen_09.jpg";
test52 = new Image();
test52.src = "bilder/fb_bi_themen_10.gif";

test6 = new Image();
test6.src = "bilder/fb_bi_themen_11.jpg";
test62 = new Image();
test62.src = "bilder/fb_bi_themen_12.gif";

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