1) Yes, I am aware of the "Object is on screen?" condition for sprite objects, but there is no way to check if a sprite object is NOT on screen?
2) I was using the Physics behavior, so I guess there's no way... But, I could probably set a variable so that 1 is equal to gravity is enabled, and 0 is equal to gravity is disabled. I'll find a work-around then.
Thanks for the quick reply.