[jQuery] Dialog confirmation before submit

[Edgar Méndez .]

I'm using the jquery validation plugin and when all the fields of the
form are correct I want to show a dialog that inform that the data
will be submited, the problem is that the dialog just show for about
1/2 second and the form is submited, how can I do some kind of delay
or pause before submit the form to show the confirmation.

There is my code:

<script type="text/javascript">
        $(function() {

                $("#dialog").dialog({
                        bgiframe: true,
                        autoOpen: false,
                        modal: true,
                        buttons: {
                                Ok: function() {
                                        $(this).dialog('close');
                                }
                        }
                });

                $('#create-user').click(function() {
                if($("#RegisterForm").valid())
                        $('#dialog').dialog('open');
                });
        });
        </script>

<button id="create-user" >Create new user</button>

Thanks in advance...