var id_banner=1;
 
function banner_change(){
  if(document.getElementById('no_flash_banner')){
    if (!document.getElementById('no_flash_banner_'+id_banner)){ id_banner=0; }
    document.getElementById('no_flash_banner').innerHTML = document.getElementById('no_flash_banner_'+id_banner).innerHTML;
    id_banner=id_banner+1;
    setTimeout('banner_change()', 4000);
  }
}