var ad_cnt4 = 4;
  var now4 = new Date()
  var sec4 = now4.getSeconds()
  var ad4 = sec4 % ad_cnt4;
  ad4 +=1;
  if (ad4==1) {
  url4="../products/breastfeeding_avent.htm";
  banner4="../images/banners/avent.gif";
  width4="468";
  height4="60";
  alt4="Avent Banner";
  }
  if (ad4==2) {
  url4="../products/formance.htm";
  banner4="../images/banners/abbott.gif";
  width4="468";
  height4="60";
  alt4="Formance Banner";
  }
  if (ad4==3) {
  url4="../products/bottles_pigeon.htm";
  banner4="../images/banners/pigeon.gif";
  width4="468";
  height4="60";
  alt4="Pigeon Banner";
  }
  if (ad4==4) {
  url4="../products/bottles_bclub";
  banner4="../images/banners/bclub.gif";
  width4="468";
  height4="60";
  alt4="Baby Club Banner";
  }
  document.write('<center><a href="' + url4 + '" target="_top">');
  document.write('<img src="' + banner4 + '" width=' + width4 + ' height=' + height4 + ' border=0 alt="' + alt4 + '"></a>');
  document.write('</center>');