Show div when radio button selected

<form id='form-id'>
<input id='watch-me' name='test' type='radio' /> Show Div<br />
<input name='test' type='radio' /><br />
<input name='test' type='radio' />
 </form>
 <div id='show-me' style='display:none'>Hello</div>

$(document).ready(function() {
   $('input[type="radio"]').click(function() {
       if($(this).attr('id') == 'watch-me') {
            $('#show-me').show('slow');           
       }

       else {
            $('#show-me').hide();   
       }
   });
});