I am doing research on implementing a nice-looking drop-down component for our application, and this one is the best I came over so far. It not only has screenshot, but also a source code download link! I could not help sharing this with you. Sometime great design ideas hit us, but when it comes to implementation, issues just all come up. I believe there is way for us to solve them this time.
The website is Chinese, but you could click the icon to download. Enjoy!
Also, here is a website (http://taobao.com) I really like. These years it had several redesigns, and the current version is really neat and clean. It’s far better than many Chinese websites. Here is a screenshot for its top bar, enjoy the website!