Rollover Effects

Hey Everyone!

Im currently working on a site for a client and I want to use a rollover effect like that on the Volvo C30 website under the [COLOR=RoyalBlue]Volvos C30** Safety** [/COLOR]section… as you rollover the highlighted square, a text box with some easing properties pops up!

Heres the link; please take a look:


How would I go about creating something like that!!!

Please help! Any and all assistance would be helpful at this time.

Thanks Again!