<script type="text/javascript" charset="utf-8">
        $(document).ready(function() {
            $('.del_form').submit(function(event){
                event.preventDefault();
                
                var response = true;
                
                $('#dialog').dialog({
                    bgiframe: true,
                    resizable: false,
                    height:140,
                    modal: true,
                    overlay: {
                        backgroundColor: '#000',
                        opacity: 0.5
                    },
                    buttons: {
                        'Delete all items in recycle bin': function() {
                            response = true;
                            $(this).dialog('close');
                        },
                        Cancel: function() {
                            response = false;
                            $(this).dialog('close');
                        }
                    },
                    close: function(event, ui) {
                        if( response ) {
                            // decide to submit by releasing this event
                            $('.del_form').unbind('submit').submit()
                        }
                    }
                });
                
            });
            
            return false;
        });
    </script>