Rotter

Rotter is a simple program for encrypting and decrypting text using the ROT13 and ROT13N5 algorithms.

ROT13 rotates each letter of the text 13 places forward in the alphabet, so A => N, B => O, etc. ROT13N5 is a variation of ROT13 that, in addition to rotating letters, rotates numbers (digits) 5 places forward, so 0 => 5, 1 => 6, etc. Here are some examples:

Text:	Meet me at 1:45 PM.
ROT13:	Zrrg zr ng 1:45 CZ.
ROT13N5:	Zrrg zr ng 6:90 CZ.

To encrypt a message, enter the text, then click the "Rot13" button or the "Rot13n5" button. To decrypt a message, do the same thing. To clear the text, click the "Clear" button.