Stretches 9 tiled PNG shadow pieces to provide proper variable-transparency shadows with rounded corners. JS automatically applies all necessary markup to any container with the CSS class
Tested to work in Safari 1.2.3, FF 0.9, IE6Win
See the CSS file for user-modifiable parameters. (You can change the offset, and change the scale of the corners.)
There's also a CSS-only version that doesn't work with IE.