function random_imglink(){
  var myimages=new Array()
  myimages[1]="/images/education/education-(1).jpg"
  myimages[2]="/images/education/education-(2).jpg"
  myimages[3]="/images/education/education-(3).jpg"
  myimages[4]="/images/education/education-(4).jpg"
  myimages[5]="/images/education/education-(5).jpg"
  myimages[6]="/images/education/education-(6).jpg"
  myimages[7]="/images/education/education-(7).jpg"
  myimages[8]="/images/education/education-(8).jpg"
  myimages[9]="/images/education/education-(9).jpg"
  myimages[10]="/images/education/education-(10).jpg"
  myimages[11]="/images/education/education-(11).jpg"
  myimages[12]="/images/education/education-(12).jpg"
  myimages[13]="/images/education/education-(13).jpg"
  

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

  if (ry==0)
     ry=1
     document.write('<img src="'+myimages[ry]+'" width="550" height="173" border=0>')
}

  random_imglink()