You can do something similar with a YUI Overlay: http://developer.yahoo.com/yui/container/overlay/
This should be a good starting point for you. If you have any specific questions, feel free to post them here.
Web Developer, Platform Engineering
Can you help me with writing Amazon-like explode window, please.
When you point mouse cursor to "See all 36 categories", animated
window pops up (really, it's a div), and on mouseout it hides.
I'm new with YUI so I can't write it yet.