YahooYahoo is a portal and has good mail, search engine, auction, and other features.
EbayEbay is the biggest and most popular auction site on the net!
Wow, what can I say except that this is CSS, the whole CSS, and nothing but the CSS! That's right folks, there is not a spec of JavaScript, VB Script, Java, or anything else but good old fashioned HTML and good new fashioned CSS going on behind the scenes here. Check it out for yourself. Its all here in this one file.
Note: the inspiration for this effect has to be given to Eric Meyer, who pushes the envelope on what can be done with pure CSS on his web site, CSS Edge.