php and jquery datepicker problem

[dadamssg87]

I'm developing with php and trying to work jquery's datepicker into my app. I'm trying to display a datepicker that's tied to a particular input field. I have the following code. The problem is that the first time i click on the input, nothing happens. Only when I unfocus and then reclick on it will it display the picker like i want. How do i get it to display the datepicker on the first click?

 

 

    <script>
    function open_picker(X)
        {
            $( X ).datepicker({
                autoSize: true,
                showOtherMonths: true,
                selectOtherMonths: true });       
        };
    </script>

 

<?php $datepickerid = "datepicker" ?>
    <input id='<?php echo $datepickerid; ?>' onClick='open_picker("<?php echo "#".$datepickerid; ?>");' type='text' value='05/21/2011' size='10'>