function random_imglink(){
  var myimages=new Array()
  myimages[1]="http://www.oldcity.com/images/buttons/ocws-yourad.jpg"
  myimages[2]="http://www.oldcity.com/images/buttons/ocws_buy-ad.gif"
  myimages[3]="http://www.oldcity.com/images/buttons/oldcity-7-mil.gif"
  var imagelinks=new Array()
  imagelinks[1]="http://www.oldcitywebservices.com"
  imagelinks[2]="http://www.oldcitywebservices.com"
  imagelinks[3]="http://www.oldcitywebservices.com"
  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()