Simple calculations in Finite Fields

As part of coursework in Paul Bamberg’s Discrete Math class, I wrote this little app in php that does some simple maniputation of finite field elements. So far the app can add, multiply and exponentiate, find element order and log (base x) . There is still a lot that can be done with it. The calculator is available as a google gadget and you can add it to your google page by clicking on:  
Add to Google