protected function display_tablenav($which)
    {
        if ('top' == $which) {
            wp_nonce_field('bulk-' . $this->args['plural']);
        }
?>
    <div class="tablenav <?php echo esc_attr($which) ?>">

        <div class="alignleft actions">
            <?php $this->bulk_actions() ?>
        </div>
<?php
        $this->extra_tablenav($which);
        $this->pagination($which);
?>

        <br class="clear">
    </div>
<?php
    }