function random_imglink(){
  var myimages=new Array()
myimages[1]="images/sides/co-op_2.jpg"
myimages[2]="images/sides/blaydon_tennis_club.jpg"

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

  if (ry==0)
     ry=1
     document.write('<img src="'+myimages[ry]+'" height=107 width=165 border=0 hspace="3" vspace="3" alt=Image of roofing services which Longridge Roofing Limited has carried out.">')
}

  random_imglink()