var max      = 10;
  var nrImages = 6;
  function makeImages() {
    this[0]     = "http://www.webscripts.hostbrasil.net/img/anuncio120.gif";
    this[1]     = "http://www.buscalinks.net/banners/buscalinks.gif";
    this[2]     = "http://www.hostbrasil.net/imagens/banners/banner120x60.gif";
    this[3]     = "http://www.ganheafiliados.com/banners/ban11.gif";
    this[4]     = "http://www.rtcestasemensagens.6te.net/img/rt120x60.gif";
    this[5]     = "http://www.webscripts.hostbrasil.net/trocabanner120/img/banner120.gif";
    this.length = nrImages;
  }
  function makeLinks() {
    this[0]     = "http://www.webscripts.hostbrasil.net/contato.htm";
    this[1]     = "http://www.buscalinks.net/";
    this[2]     = "http://www.hostbrasil.net/";
    this[3]     = "http://www.ganheafiliados.com/?ref=1198";
    this[4]     = "http://www.rtcestasemensagens.rg3.net/";
    this[5]     = "http://www.webscripts.hostbrasil.net/trocabanner120";
    this.length = nrImages;

  }
  var vetImages = new makeImages();
  var vetLinks  = new makeLinks();
  var x = Math.round(Math.random()*max);
  var y    = max / nrImages;
  for(var cont = 1;cont*y <= max;cont++) {
    if (x <= (cont*y)) {
      document.write("<a href="+vetLinks[cont-1]+" target=_blank><img  src="+vetImages[cont-1]+" border=0></a>");
      break;
    }
  }