mouseDown across multiple buttons

[Scott Morrow]

I would like to "drag" across a grid of buttons and have them change 
their hilite as the mouse enters them... rather than needing to click 
them one at a time. With the mouse being down, I'm having trouble.  
I've tried some things with mouseMove x,y coordinates but have been 
unsuccessful.  Anyone have an idea?

Scott Morrow
elementarysoftware.com