Java Scripting Help

Hi there,

I am no new to this J.S. and need help.

I have 3 question fields (named as Q1, Q2 and Q3) in a text format and another 3 answer fields (named as A1, A2 and A3) in number format.  I need a J.S for this:

If Q1 = Yes, then A1=1, if Q1= No then A1=2, and so on..

The Field A4 needs to do a sum of A1, A2, A3.

How to write a J.S. for above fields A1, A2, A3 and A4.

Thanks.

JJ