If you modify a theme then all files you use need to be modified to get a consistent look of the site.
In your case the album.php and image.php files have been altered to get what you see right now.
You will also have to modify the register.php, search.php and archive.php files to get the same look.
Try a search. It will redirect you to the un-modified search page (search.php)
Click on "Archive View". It will redirect you to the un-modified archive page (archive.php)
Please also read the theming tutorial.
http://www.zenphoto.org/news/theming-tutorial