var how_many_ads = 09;
  var now = new Date()
  var sec = now.getSeconds()
  var ad = sec % how_many_ads;
  ad +=1;
  
  if (ad==1) {
    banner="imagens/index/p01.jpg";
    width="386";
    height="257";
  }
  
  if (ad==2) {
    banner="imagens/index/p02.jpg";
    width="386";
    height="257";
  }
  
  if (ad==3) {
    banner="imagens/index/p03.jpg";
    width="386";
    height="257";
  }
  
  if (ad==4) {
    banner="imagens/index/p04.jpg";
    width="386";
    height="257";
  }
  
  if (ad==5) {
    banner="imagens/index/p05.jpg";
    width="386";
    height="257";
  }
  
  if (ad==6) {
    banner="imagens/index/p06.jpg";
    width="386";
    height="257";
  }
  
  if (ad==7) {
    banner="imagens/index/p07.jpg";
    width="386";
    height="257";
  }
  
  if (ad==8) {
    banner="imagens/index/p08.jpg";
    width="386";
    height="257";
  }
  
  if (ad==9) {
    banner="imagens/index/p09.jpg";
    width="386";
    height="257";
  }
  
  document.write('<center>');
  document.write('<img style="border:0px #CCCCCC solid;" src=\"' + banner + '\" width=')
  document.write(width + ' height=' + height + ' ');
  document.write('</center>');