on>
          <option value="5">Another choice could be here</option>
          <option value="6">Yet another item to be chosen</option>
        </optgroup>
        <optgroup label="Group 3">
          <option value="7">Some text goes here</option>
          <option value="8">Another choice could be here</option>
          <option value="9">Yet another item to be chosen</option>
        </optgroup>
      </select>
      <input class="error" type="text" id="text_inline" name="text_inline" />
      <input typ