var max      = 22;
  var nrImages = 22;  function makeImages() {
    this[1]     = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif"; 
    this[2]     = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[3]     = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[4]     = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[5]     = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[6]     = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[7]     = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[8]     = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[9]     = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[10]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[11]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60.gif";
    this[12]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[13]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[14]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[15]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[16]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[17]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[18]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[19]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[20]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[21]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this[22]    = "http://megaconta.net/images/banners_anuncios/afiliado468x60-1.gif";
    this.length = nrImages;
  }
  function makeLinks() {
    this[1]     = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[2]     = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[3]     = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[4]     = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[5]     = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[6]     = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[7]     = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[8]     = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[9]     = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[10]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[11]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[12]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[13]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[14]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[15]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[16]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[17]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[18]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[19]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[20]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[21]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    this[22]    = "http://megaconta.net/affiliate_info.php?ref=1104";
    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;
    }
  }