function print_column_headers( $with_id = true ) {
		if ( isset( $_POST['pb_catalog_search'] ) ) {
			if ( ! wp_verify_nonce( esc_attr( $_POST['pb_catalog_search'] ), 'pb_catalog_search' ) ) {
				die( 'Security check.' );
			}
		}

		if ( empty( $_GET['s'] ) && ! empty( $_POST['s'] ) ) {
			$_SERVER['REQUEST_URI'] = esc_url( add_query_arg( 's', $_POST['s'] ) );
		}

		if ( empty( $_GET['orderby'] ) && ! empty( $_POST['orderby'] ) ) {
			$_GET['orderby'] = $_POST['orderby'];
		}

		if ( empty( $_GET['order'] ) && ! empty( $_POST['order'] ) ) {
			$_GET['order'] = $_POST['order'];
		}

		parent::print_column_headers( $with_id );
	}