It would be nice if I could call actions from another screen/webblock.

To give a example to use this:

When I have a webblock ('first') inside another webblock ('second') (it's the same with screens) and I need the first webblock refreshed. I must build a hidden refresh button in the first webblock so I can call that button from the second webblock with javascript. This way I also could be able to refresh other parts of the screen (with is build through webblocks) without refreshing the whole screen.