New gallery app I made

I was fed up with not being able to find a simple, elegant design.
The apps I saw out there we all kind of overkill to me. I don’t need comments to my photos, and just was a pain to manually upload a lot of photos through a web interface to get the images up and running.
Features that I required:
– manually parse a directory full of pictures.
– generate a thumb in small and medium sizes, cached to save server processing
– create a easy to use and understand interface [more html than programming]
– show the filename as the description of the photo.
– have subfolders as albums.
– link to the original large photo.
Features that I added:
– ability to show the size of the original file, in denominations of bytes, kilobytes, megabytes.
What I originally wanted to do was have to create and .htaccess file to link to a specific file at all times. So I would only need to upload the pictures. However I couldn’t figure it out, so I just put a < ? include("..index.php");?> as the index.php file in all folders, except the initial gallery page. Where it reference the actually gallery.php file.
If you have any suggestion to add to this same, simple app… let me know, I may add to it.