 ((option.value == 1) || (option.value == 2) || (option.value == 3)) {
          option.style.color = '#999999';
          option.disabled = true;
          if (option.selected)
            obj.options[len-1].selected = true;
        }
        else {
          option.style.color = '';
          option.disabled = false;
        }
      }
      break;
    default:
      for (i=0; i<len; i++) {
        option = obj.options[i];
        option.style.color = '';
        option.disabled = false;
      }
  }
}
</sc