// Random Image
// ランダムにバナーを表示する
function randomBanner() {
  img = new Array();
  img[0] = "banner/ouen_mifuyu.jpg";
  img[1] = "banner/ouen_mituki.jpg";
  img[2] = "banner/ouen_kana.jpg";
  img[3] = "banner/ouen_kadoya.jpg";
  img[4] = "banner/ouen_oonishi.jpg";
  img[5] = "banner/ouen_kouyama.jpg";
  img[6] = "banner/ouen_takamiya.jpg";
  img[7] = "banner/ouen_sakaki.jpg";
  img[8] = "banner/ouen_ryota.jpg";
  img[9] = "banner/ouen_sakamaki.jpg";
  img[10] = "banner/ouen_kazumi.jpg";
  img[11] = "banner/ouen_hanyo.jpg";
  n = Math.floor(Math.random()*img.length);
  document.write("<a href='index.html'><img src='"+img[n]+"' width='600' height='141' border='0' alt='追憶の向こう側　バナー' /></a>");
}