birthday select dropdown, month and day

birthday-selects

<select name="birthday" id="birthday">
	<option value="january">January</option>
	<option value="february">February</option>
	<option value="march">March</option>
	<option value="april">April</option>
	<option value="may">May</option>
	<option value="june">June</option>
	<option value="july">July</option>
	<option value="august">August</option>
	<option value="september">September</option>
	<option value="october">October</option>
	<option value="november">November</option>
	<option value="december">December</option>
</select>
<select id="birthday-day">
	<option value="">Day</option>
	<option value="01">1</option>
	<option value="02">2</option>
	<option value="03">3</option>
	<option value="04">4</option>
	<option value="05">5</option>
	<option value="06">6</option>
	<option value="07">7</option>
	<option value="08">8</option>
	<option value="09">9</option>
	<option value="10">10</option>
	<option value="11">11</option>
	<option value="12">12</option>
	<option value="13">13</option>
	<option value="14">14</option>
	<option value="15">15</option>
	<option value="16">16</option>
	<option value="17">17</option>
	<option value="18">18</option>
	<option value="19">19</option>
	<option value="20">20</option>
	<option value="21">21</option>
	<option value="22">22</option>
	<option value="23">23</option>
	<option value="24">24</option>
	<option value="25">25</option>
	<option value="26">26</option>
	<option value="27">27</option>
	<option value="28">28</option>
	<option value="29">29</option>
	<option value="30">30</option>
	<option value="31">31</option>
</select>