<label for="type">Type</label>
     <select name="type" id='type'>
          <option value="Customer">Customer</option>
	  <option value="Revenue">Revenue</option>
	  <option value="Guide">Guide</option>
	  <option value="Internal">Internal</option>
     </select>

<label>SMS_Outage</label>
<input id='outage' type="radio" name="to1" value="1" checked='checked'>
<label>AD_Outage</label>
<input id='ads' type="radio"name="to1" value="2">
<br/>

<script>
			$('#type').change(function() {
			if ($('#type').attr('value')=='Guide') {
				$("input#outage").check();
				}
			else
				{
				$("input#ads").check();
				}
		});
</script>