thumbs in individual photo folders

[intermedion]

I am looking for a version of the createthumb.php file which puts thumbs in a thumbnails folder under the individual photo albums (as opposed all thumbs together in a single folder).

As per the comments on http://sebsauvage.net/wiki/doku.php?id=minigal_nano_en#customisation
somebody already did this but then they removed the file from the site.

Could somebody please post a link to the custom createthumb.php file here?

Thanks