ResizeStack help, please

[Jon]

I have a handler in my Stack that displays an image.  In order to get 
the size of the image right, I have some special code to do the 
scaling.  In order to keep the image looking right when the user resizes 
the card/stack, I wrote a ResizeStack handler and put the image scaling 
code in the ResizeStack handler.

First confusion.  The name of the handler is ResizeStack, but it doesn't 
seem to work when it is put in the Stack. The documentation says that 
the message is sent to the Card, not the Stack, so I moved the handler 
to the Card, but it still is not called.

Does it matter where the ResizeStack handler is located?   This is more 
confusing than one would hope it would be.

Jon