// 2008-10-30 added by isao
function writeCookie(name, value, expdays, path) {
// Cookie を書き込む
  t = new Date;
  t.setTime(t.getTime() + expdays * 24 * 60 * 60 * 1000);
  document.cookie = name + '=' + escape(value) + '; expires=' + t.toGMTString() + '; path=' + path;
}

function readCookie(name) {
// Cookie を読み込む
  allcookie = document.cookie + ';'
  start1 = allcookie.indexOf(name);
  if (start1 != -1) {
    target = allcookie.substring(start1, allcookie.length);
    start2 = target.indexOf('=', 0) + 1;
    end = target.indexOf(';', start2);
  }
  return(unescape(target.substring(start2, end)));
  return("");
}