function Bildwechsel(Bildnr,Bildobjekt) {
if (browserVer == 1) {
 window.document.images[Bildnr].src = Bildobjekt.src;
}}

function random_img() {
 images = new Array(
  new Array("templates/twinplan/img/random_01.jpg"),
 new Array("templates/twinplan/img/random_02.jpg"),
 new Array("templates/twinplan/img/random_03.jpg"),
  new Array("templates/twinplan/img/random_04.jpg")



 );
for (i=0;i<images.length+i;i++) {
 a = Math.round(Math.random()*images.length);
 if ((a >= 0) && (a < images.length)) {
  bild = images[a];
  URL = bild[0];

   if (navigator.appName.indexOf('Netscape') != -1) { FensterBreite = self.innerWidth }
   else if (navigator.appName.indexOf('Microsoft') != -1) { FensterBreite = document.body.clientWidth };
   
   document.write("<img src=\""+URL+"\" border=\"0\" >");
  break;
  }
 }
}