HTML DropShadow
The best HTML DropShadow I’ve seen is here: http://www.tastypopsicle.com/dropshadow/
This works fine with simple images, but in a situation where you need a background image, or you’d like the DOM to play more OOP.
After working with the amazing talent over at American Idol, we created a MooTools 1.2.1 DropShadow class that injects a Flash DropShadow into a specified DOM element. I know Microsoft IE offers the CSS filter: filter:DropShadow(Color=#EEEE66, OffX=5, OffY=5) which can come in handy; however, this tutorial offers the rich Flash style.
