function {my_theme_name_here}_regions() {
  return array(
    'sidebar_left' => t('left sidebar'),
    'sidebar_right' => t('right sidebar'),
    'content_top' => t('content top'),
    'content_bottom' => t('content bottom'),
    'header' => t('header'),
    'footer_block' => t('footer'),
    'navigation' => t('navigation'),
  );
}