Detecting HOME button on ANDROID

Hello everyone

Hope someone could help me.

I have 3 questions regarding AIR on ANDROID:

1. Is there a way to catch the event when a user presses the HOME button?

2. Is there a way to catch an event before the app is going to deactivated mode? (Something like right at the start of deactivating).

3. Is there a method that makes the app acts as if the HOME button had been presserd? (A method that would send my app to the background)

Thank you very much