', esc_url( get_bloginfo( 'pingback_url' ) ) ); } } add_action( 'wp_head', 'acoustics_pingback_header' ); if ( ! function_exists( 'acoustics_layout_classes' ) ) : function acoustics_layout_classes( $layout ) { switch ( $layout ) { case 'left-sidebar': $acoustics_class = "col-md-9 col-sm-12 pull-right"; break; case 'no-sidebar': $acoustics_class = "col-md-12"; break; case 'right-sidebar': $acoustics_class = "col-md-9 col-sm-12 pull-left"; break; default: $acoustics_class = "col-md-12"; break; } return $acoustics_class; } endif;