[F5] roll-over button elasticity highlight

Hey all,

i was trying to reproduce this nifty little effect of a springy rollover on a button, that can go from button to button, and also springs up when nothing is selected.

the effect i’m trying to reproduce is at:
http://www.driftlab.com/index2.htm

go into the portfolio section and rollover any of the pieces.

Now i’ve studied the tutorials for elasticity at kirupa and came up with a effect that is based on mouse-click and not on a button. I’ve also searched this forum for a soltuion.

the fla. is availible for download at:
http://www.joedonato.com/elasticity.fla

my current stab at the effect is here:
http://www.joedonato.com/elasticity.html

any help would be greatly appreciated!!!
joe donato