I don't understand the "gameShowScore2" question. What are you trying to do? Are you trying to show different strings in different situations? You can do that all in gameShowScore. Give me an example of what you want, and I'll show you how to do it.
As for adding one variable and subtracting another in one onclick, that's kind of a pain. Many browsers don't let you call two functions in an onclick, so you have to write a function that calls your two.
For instance, add the following function to your _game.js
function varPlusAndMinus(name1, plus, name2, minus)
{
varPlus(name1, plus);
varMinus(name2, minus);
}
Then in the onclick do
varPlusAndMinus('One', 5, 'Two', 4)
You can write any function you want and call it from the onclick.
Tlaero