var site_number, site, site_len, site_path, site_file;
var bunner_len, bunner, bunner_file;

// サイト(契約社)数(-1)
site_number = 29;

site_len    = 3; // サイトを表す文字数
site_path   = "/user/kunyami/ad/";
/* 表示サイトの決定 */
site = "00000" + Math.floor(Math.random() * (site_number + 1));
site = site.substr(site.length - site_len);
site_file = site_path + site + ".js";
document.writeln("<SCRIPT type=\"text/javascript\" SRC=\"" + site_file + "\"></SCRIPT>");