gistfile1.txt

    # Block empty blocked or whitelisted referers
    location ~ ^/gallery/(\d+)/(\d+)/(\d+)-(\d+)-(\d+)\.(.+)$
    {
        valid_referers none blocked scenekids.com ~(google.|yahoo.|bing.|facebook.|fbcdn.);

        if ($invalid_referer)
        {
            return 403;
        }
    }

    # Redirect empty referrer back to the gallery
    location ~ ^/gallery/(\d+)/(\d+)/(\d+)-(\d+)-(\d+)\.(.+)$
    {
        valid_referers blocked scenekids.com ~(google.|yahoo.|bing.|facebook.|fbcdn.);
        
        if ($invalid_referer)
        {
            rewrite ^/gallery/(\d+)/(\d+)/(\d+)-(\d+)-(\d+)\.(.+)$ /gallery?image=$1-$2 last;
        }
    }