Captchagen With Math CAPTCHA

Hi, the name's Chris, we talked previously via email. Sorry it took so long to get this all figured out. Anyhow this is my revised version of CAPTCHAGEN with math captcha features. I also added some extra configuration options to make the graphics and captcha in general a little more variable.

A lot of those options, if you think they're a problem, can be stripped out. The core of my features are in Captcha.js, generateText.js and drawText.js, and getFontSize.js. The other files just use those extra options I mentioned.

Anyhow, let me know what you think. I look forward to working with you to implement this new feature. :)