I'm wondering why you would want this... If it's just "for show", then don't bother... focus rather on putting product in front of the customer.
When I first started using zencart (11 years ago) I also looked for all sorts of gimmicks and fancy functions - only to realise (often painfully) that the MAIN REASON people go to a webshop is to BUY STUFF, and the less you distract them with superfluous nonsense, the better they like you and the greater the chance they will buy something.
We are in the process of a complete re-design of one of our main sites, and guess what... ?
NO rotating banners
NO slideshows
NO scrolling sideboxes
NO waffling on about "like me on facebook please..." or "see what crap we're saying on Twitter..."
NO outbound links to blogs or social pages.
etc...
We're using our WWP (Wider Web Presence) for that sort of stuff - ie: harvesting the punters and then funneling them to where they finally make the purchase, but when they arrive at the webshop, it is little more than a cash register. The quicker they can fill their basket with what they are after and the faster they can check-out, the better they like it - especially on mobile devices...