Simple, easy and v.g coding structure, thank you for the author efforts

Anyone with a little experience in php can add background, distortion and new numbers images to this plugin, also we can remove or add it from/to a certain form, i like it :), but for ppl who doesn’t know web programming basic’s i hope from the author just a simple form for adding new numbers, bg and dist images, choosing which module (logon, comments …etc) i can add this plugin, changing text header, the difficulty and the picture size options, then there is nothing more to add ! it will be the most popular plugin for captcha, if the author did that form i hope he takes care for right to left language RTL.
thank you for the author and his efforts in doing such organized plugin code.