function kanken3Tag() {
  var path = 'http://' + location.host;
  var elems = document.getElementsByTagName('script');
  var param = '';
  var amazon_id = document.getElementById('amazon_id').value;
  var target = document.getElementById('content');
  for(var i = 0; i < elems.length ; i++) {
    if(elems[i].src && elems[i].src.match(/amazon\.js/)) {
      var amazon = (amazon_id) ? amazon_id.match(/^[a-zA-Z0-9-]+$/) : '';
      param = (amazon) ? '?amazon_id=' + amazon : '';
      break;
    }
  }
  var tag = '<script type="text/javascript" charset="Shift_JIS" src="'
      + path + '/kanken3/blogparts/js/parts.js' + param + '" ></script><noscript><a href="' + path + '">漢検DS3デラックスブログパーツ</a>はJavascriptが利用できる環境でのみで動作します。</noscript> ';
  target.value = tag;
}