Q:

HTML/CSS: How does Google create this drop shadow over their maps?

Question: How does Google create the dropshadow next to the vertical scrollbar over the Google Map?
This is a screenshot depicting exactly what I'm talking about.

This seems to be regardless of browser (IE, Firefox, Chrome) and platform (Windows, Mac, Linux).

A:

It's actually a series of five razor-thin DIVs, each with decreasing opacity, stacked next to each other.  You can see this for yourself by using Firebug and clicking on the shadow area.

