Nifty mouseovers to enlarge images

[Tags: webdesign]. Another article by Poynter, this one claiming news images are often too small and that we need "expansion of a small image when the user passes the mouse cursor over the original" - there's a link to a great example at Yahoo! Local. What would have been more useful is to know the code behind it, but I'll do some digging to see if I can come up with it... (I'm guessing a rollover created in Fireworks that uses more than one frame).