function random_btn() {
banner = new Array();
banner[0] = "/shared/bnr/59toukai_minowa125x125.jpg";
banner[1] = "/shared/bnr/60toukai_hanei125x125.jpg";
banner[2] = "/shared/bnr/61toukai_akebono125x125.jpg";
banner[3] = "/shared/bnr/52gihu_umebayashi125x125.jpg";
banner[4] = "/shared/bnr/192shinshusagami_minaminagano125x125.jpg";
banner[5] = "/shared/bnr/50gihu_tsurumi125x125.jpg";
banner[6] = "/shared/bnr/08ainetgrp_heianplaza125x125.jpg";
banner[7] = "/shared/bnr/06ainetgrp_shiinoo125x125.jpg";
banner[8] = "/shared/bnr/119fuji_fujigohouden125x125.jpg";
banner[9] = "/shared/bnr/115lifeplan_yokkaichi125x125.jpg";

link = new Array();
link[0] = "/hall/detail/SAIJOCD/59";
link[1] = "/hall/detail/SAIJOCD/60";
link[2] = "/hall/detail/SAIJOCD/61";
link[3] = "/hall/detail/SAIJOCD/52";
link[4] = "/hall/detail/SAIJOCD/192";
link[5] = "/hall/detail/SAIJOCD/50";
link[6] = "/hall/detail/SAIJOCD/8";
link[7] = "/hall/detail/SAIJOCD/6";
link[8] = "/hall/detail/SAIJOCD/119";
link[9] = "/hall/detail/SAIJOCD/115";

rand = Math.floor(Math.random()*banner.length);
document.write("<a href="+link[rand]+"><img src="+banner[rand]+" style='border-style:none'></a>");
}