Disable a jqueryui datepicker

Question

I have a jqueryui datepicker associated with a input text. When i make the input textbox readonly i dont want the datepicker to show up . Is that possible? I would be setting the readonly property to true or false from the code.

<script>
    $(function() {
        $( "#datepicker" ).datepicker();
    });
    </script>



<div class="demo">

<p>Date: <input type="text" id="CompleteDate"> <input class="change" type="checkbox" name="chkBoxb" id="chkBoxb"> </p>

</div>


j$('#chkBoxb').click(function(){
   var paramChangeBoxes = j$('input:checkbox.change');

 if (j$(this).is(':checked')) {

  paramChangeBoxes.removeAttr('checked');
    j$('#chkBoxb').attr('checked', 'checked');

     j$('#CompleteDate').attr('readonly',false);
     j$("#CompleteDate").datepicker();


 }
 else
 {
  j$('#CompleteDate').attr('readonly',true);
 $( "#CompleteDate:not([readonly])"  ).datepicker();
 }

});

Updated the code

Answer 1

disable it like this:

$('#dateSelector').datepicker('disable');

and enable it like this:

$('#dateSelector').datepicker('enable');

Here's a working sample: http://jsfiddle.net/CG64h/8/