function random_imglink(){
  var myimages=new Array()
  myimages[1]="../images/center_img1.jpg"
  myimages[2]="../images/center_img2.jpg"
  myimages[3]="../images/center_img3.jpg"
  myimages[4]="../images/center_img4.jpg"
  myimages[5]="../images/center_img5.jpg"
  myimages[6]="../images/center_img6.jpg"
  myimages[7]="../images/center_img7.jpg"
  myimages[8]="../images/center_img8.jpg"
  myimages[9]="../images/center_img9.jpg"
  myimages[10]="../images/center_img10.jpg"
  myimages[11]="../images/center_img11.jpg"
  myimages[12]="../images/center_img12.jpg"
  myimages[13]="../images/center_img13.jpg"
  myimages[14]="../images/center_img14.jpg"
  myimages[15]="../images/center_img15.jpg"
  myimages[16]="../images/center_img16.jpg"
 

  var ry=Math.floor(Math.random()*myimages.length)
  if (ry==0)
     ry=1
     document.write('<img src="'+myimages[ry]+'" border=0></a>')
}
  random_imglink()