Question about rollovers

ok so i have made this module using a tutorial. it is a bunch of squares and each one enlarges when you roll the mouse over them. im thinking of modifying the module to make a sorta flash menu type thing.

however, when you move the mouse to fast over a few adjacent squares, they enlarge and shrink really really fast; it looks like they are spazing…is there a way to prevent this from happening?

i probably didnt give enough info…but yea…thanks to anyone who helps me out…