return alert from function

Try

s.A();

A is a function. If you just say s.A; all you're doing is emitting the reference to what A is, e.g. if I whack s.A; into Chrome's javaScript console I get the following:

Notice how all it did was output the function definition?

Now, if I say `s.A();' I get what you originally expected - it fires the function: