function random_imglink(){
  var myimages=new Array()
  //specify random images below. You can have as many as you wish
  myimages[1]="cattle-banner1.gif"
  myimages[2]="cattle-banner2.gif"
  myimages[3]="cattle-banner3.gif"
  myimages[4]="cattle-banner4.gif"
  myimages[5]="cattle-banner5.gif"
  myimages[6]="cattle-banner6.gif"
  myimages[7]="cattle-banner7.gif"
  myimages[8]="cattle-banner8.gif"
  myimages[9]="cattle-banner9.gif"
  myimages[10]="cattle-banner10.gif"
  myimages[11]="cattle-banner11.gif"
  myimages[12]="cattle-banner12.gif"
  myimages[13]="cattle-banner13.gif"
  myimages[14]="cattle-banner14.gif"
  myimages[15]="cattle-banner15.gif"
  myimages[16]="cattle-banner16.gif"
  myimages[17]="cattle-banner17.gif"
  myimages[18]="cattle-banner18.gif"
  myimages[19]="cattle-banner19.gif"
  myimages[20]="cattle-banner20.gif"
  myimages[21]="cattle-banner21.gif"
  myimages[22]="cattle-banner22.gif"
  myimages[23]="cattle-banner23.gif"
  myimages[24]="cattle-banner24.gif"
  myimages[25]="cattle-banner25.gif"
  myimages[26]="cattle-banner26.gif"
  myimages[27]="cattle-banner27.gif"
  myimages[28]="cattle-banner28.gif"
  myimages[29]="cattle-banner29.gif"
  

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

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

random_imglink()