Springboard diving scorer

I dive for my High School's swim team, and my dad likes to compute my score as I'm diving. A few times, the officials have messed up with the math and I've brought it to their attention and gotten higher scores.

Anyways, he has an Iphone, and he has to switch been the Notes application and the calculator to keep track of everything. To make it easier, I made a little javascript application to do it all for him.
You can find (and use it) at divescorer.weebly.com
It looks best on an IPhone/Itouch