[flexcoders] knowing if a display object is in the view area or not.

[giladozer]

Hi, 
is there a way for "this" ( is Display Object) to know when it's in the display 
area or not ? 

and for a different yet related question.
is there a way for an " item renderer" to know if it's in the diplsay area of 
not ?

thanks, 
Gilad