One last (?) item regarding mouse polling I thought I'd toss out there is the 
fact that historically polling for the mouse state (down/up) was unreliable.  
MetaCard would sometimes miss when the mouse state changed, which could wreak 
havok with scripts that relied on this state change to terminate.  I ran into 
this early on when switching from SuperCard to MetaCard, and it was then that 
Raney explained the use of mouseMove with mouseUp/Down handlers that set 
variable states, and specifically to avoid polling the mouse state.

Perhaps things are different now, but I guess fear of old behavior still makes 
me leary of using mouse state polling.

Regards,


Scott Rossi
Creative Director
Tactile Media, Multimedia & Design
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