[Ntfu2]

Try this script instead, place it where you want the image+link to appear.

<script language="JavaScript">
<!--

function random_imglink(){
  var myimages=new Array()
  //specify random images below. You can have as many as you wish
  myimages[1]="img1.gif"
  myimages[2]="img2.gif"
  myimages[3]="img3.gif"

  //specify corresponding links below
  var imagelinks=new Array()
  imagelinks[1]="http://www.link.com"
  imagelinks[2]="http://www.link.com"
  imagelinks[3]="http://www.link.net"

  var ry=Math.floor(Math.random()*myimages.length)

  if (ry==0)
     ry=1
     document.write('<div align='"center'"><a href='+'"'+imagelinks[ry]+'"'+'><img src="'+myimages[ry]+'" border=0></a></div>')
}

  random_imglink()
//-->
</script>