function header(){
  var myimages=new Array()
  
  myimages[1]="http://www.art-in-web.com/img/banner/art-in-web-hosting-provider-01.jpg"
  myimages[2]="http://www.art-in-web.com/img/banner/art-in-web-hosting-provider-02.jpg"
  myimages[3]="http://www.art-in-web.com/img/banner/art-in-web-hosting-provider-03.jpg"


  var imagelinks=new Array()
  imagelinks[1]="http://www.art-in-web.com/"
  imagelinks[2]="http://www.art-in-web.com/"
  imagelinks[3]="http://www.art-in-web.com/"

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

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