See the code below.

 
	<select name="DateOfBirth_Month">
		<option>- Month -</option>
		<option value="1">January</option>
		<option value="2">February</option>
		<option value="3">March</option>
		<option value="4">April</option>
		<option value="5">May</option>
		<option value="6">June</option>
		<option value="7">July</option>
		<option value="8">August</option>