In line 48 in your gpf1.js file

$.dialog();

This $. sign applies the dialog method to the whole jquery element. you should use the dialog method to a DOM element you want like:

$(foo).dialog()

And here's part of the DEMO from jqueryui.com.

    $(function() {

        $( #dialog ).dialog();

    });

    </script>







<div class=demo>

<div id=dialog title=Basic dialog>

<p>This is the default dialog which is useful for displaying information. The dialog window can be moved, resized and closed with the 'x' icon.</p>

</div>

</div>