function random_imglink(){
  var myimages=new Array()
  //specify random images below. You can have as many as you wish
myimages[1]="images/D_flash.jpg"
myimages[2]="images/D_flash2.jpg"
myimages[3]="images/D_flash3.jpg"
myimages[4]="images/D_flash4.jpg"
myimages[5]="images/D_flash5.jpg"

  //specify corresponding links below
  var imagelinks=new Array()
  imagelinks[1]=""
  imagelinks[2]=""
  imagelinks[3]=""
  imagelinks[4]=""
  imagelinks[5]=""
  
  var ry=Math.floor(Math.random()*myimages.length)

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

  random_imglink()