[pincmonkey]

My friend gave me this code to build on, and I was wondering what advice you guys had/mods.
Heres what he needs(knowledge of the interworking of pokemon would be helpful):
I want a Pokemon type multiplyer in JavaScript. Here's how it needs to work.

*Each Pokemon type must be stored at one. These are the Types:
Water
Flying
Electric
Fire

*There must be a way to use a drop-down menu to choose one or two types. This is how the multiplyer works:
Water
Water x 0.5
Flying x 1
Electric x 0.5
Fire x 2

Flying
Water x. 0.5
Flying x 0.5
Electric x 1
Fire x 1

Electric
Water x. 2
Flying x 2
Electric x 1
Fire x 1

Fire
Water x. 0.5
Flying x 1
Electric x 1





The code is attached
Thanks In advance,
pincmonkey