document.write('<script type="text/javascript" src="/ads/banners/company_25years.js"></script>');
document.write('<script type="text/javascript" src="/ads/banners/company_kyusyu.js"></script>');
document.write('<script type="text/javascript" src="/ads/banners/enews.js"></script>');

function show_banner(){
  var random_banner = location.search.replace(/^\?/,"");
  if (random_banner != ""){ random_banner -= 0; }
  else { random_banner = Math.floor(Math.random() * 3); }

       if (random_banner == 1){ banner_company_25years(); }
  else if (random_banner == 2){ banner_company_kyusyu(); }
  else                        { banner_enews(); }
}