function random_imglink(){
  var myimages=new Array()
  myimages[3]="http://www.bauerstefan.at/images/hintergrund008.jpg"
  myimages[1]="http://www.bauerstefan.at/images/hintergrund007.jpg"
  myimages[2]="http://www.bauerstefan.at/images/hintergrund005.jpg"
  var ry=Math.floor(Math.random()*myimages.length)

  if (ry==0)
     ry=1
     document.write('<img id="background-img"  class="bg"  src="'+myimages[ry]+'" border=0 />')
}

  random_imglink()