wp_list_widget_controls_dynamic_sidebar

	static $i = 0;
	$i++;

	$widget_id = $params[0]['widget_id'];
	$id        = isset( $params[0]['_temp_id'] ) ? $params[0]['_temp_id'] : $widget_id;
	$hidden    = isset( $params[0]['_hide'] ) ? ' style="display:none;"' : '';

	$params[0]['before_widget'] = "<div id='widget-{$i}_{$id}' class='widget'$hidden>";
	$params[0]['after_widget']  = '</div>';
	$params[0]['before_title']  = '%BEG_OF_TITLE%'; // Deprecated.
	$params[0]['after_title']   = '%END_OF_TITLE%'; // Deprecated.

	if ( is_callable( $wp_registered_widgets[ $widget_id ]['callback'] ) ) {
		$wp_registered_widgets[ $widget_id ]['_callback'] = $wp_registered_widgets[ $widget_id ]['callback'];
		$wp_registered_widgets[ $widget_id ]['callback']  = 'wp_widget_control';
	}

	return $params;
}