var max      = 5;
  var nrImages = 5;
  function makeImages() {
    this[0]     = "http://www.mp3filmesgratis.kit.net/imagens/banner468x60curioso.gif";
    this[1]     = "http://www.mp3filmesgratis.kit.net/imagens/banner468x60vitrinedabene.gif";
	this[2]     = "http://www.topinho.com/images/b2.gif";
    this[3]     = "http://www.topinho.com/images/b4.gif";
    this[4]     = "http://www.mp3filmesgratis.kit.net/imagens/publicidade/banners/top30.gif";
    this.length = nrImages;
  }
  function makeLinks() {
    this[0]     = "http://curiosolegal.blogspot.com";
    this[1]     = "http://vitrinedabene.blogspot.com";
    this[2]     = "http://www.topinho.com/index.php?a=in&u=bomfim17";
    this[3]     = "http://www.topinho.com/index.php?a=in&u=bomfim17";
    this[4]     = "http://www.top30.com.br/cgi/votar.cgi?ID=95308";
    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;
    }
  }