Using a print_r (dump) function to show return data within a <pre> tag. Nice way of presenting data.
Added preloader for AJAX Calls & changed the dump() function a little. Added @link to original source file.
Preloader / respsonsive CSS for image gallery. Naice.
Implemented colorbox & some css/js tweaks to make this image gallery look sweat & nice :-)
Formatting JS.
Documentation tweak, changed minimum PHP version to 5.2.17 with custom set_error_handler (sad story.)