function random_imglink_01(){
  var myimages=new Array()

  myimages[1]="images/top_image_01.png"
  myimages[2]="images/top_image_02.png"
  myimages[3]="images/top_image_03.png"
  myimages[4]="images/top_image_04.png"
  myimages[5]="images/top_image_05.png"

  var imagelinks=new Array()
  imagelinks[1]="index.php"
  imagelinks[2]="index.php"
  imagelinks[3]="index.php"
  imagelinks[4]="index.php"
  imagelinks[5]="index.php"

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

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