simple_form datetime output

dom.html

<div class="input datetime optional">
  <label class="datetime optional" for="service_request_requested_on_1i">Requested on</label>

  <select class="datetime optional" id="service_request_requested_on_1i" name="service_request[requested_on(1i)]">
    <option selected="selected" value="2012">
      2012
    </option>
  </select> 

  <select class="datetime optional" id="service_request_requested_on_2i" name="service_request[requested_on(2i)]">
    <option selected="selected" value="3">
      March
    </option>
  </select> 

  <select class="datetime optional" id="service_request_requested_on_3i" name="service_request[requested_on(3i)]">
    <option selected="selected" value="5">
      5
    </option>
  </select> — 

  <select class="datetime optional" id="service_request_requested_on_4i" name="service_request[requested_on(4i)]">
    <option selected="selected" value="17">
      17
    </option>

  </select> : 

  <select class="datetime optional" id="service_request_requested_on_5i" name="service_request[requested_on(5i)]">
    <option selected="selected" value="16">
      16
    </option>
  </select>
</div>