Hi BluePhaze and Ashley,
thanks a lot for your responses. As far as I can see, the CocoonJS and Appmobi objects do not support those triggers.
@Ashley: That's great news. However, doesn't the CocoonJS-Tutorial state that Construct 2's "Browser-Object" is not being supported?
EDIT: Oh I see. The Tut states that "Most features of the Browser object are not supported." - Is there a list out there that says which features are supported and which are not?