function genesis_content_width( $default, $small, $large ) {

  switch ( genesis_site_layout( 0 ) ) {
    case 'full-width-content':
      $width = $large;
      break;
    case 'content-sidebar-sidebar':
    case 'sidebar-content-sidebar':
    case 'sidebar-sidebar-content':
      $width = $small;
      break;
    default:
      $width = $default;
  }

  return $width;

}