I use a Chrome extension that is somewhat similar, but only for images : <a href="http://hoverzoom.net/" rel="nofollow">http://hoverzoom.net/</a><p>It's one of these little things that you realize how useful they are when they're not here ;)<p>Maybe you should try to implement it as a browser extension instead of a website extension? I think it would be more useful (because it is not expected behavior for a visitor of your website).