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

Question

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

Answer 1

IE 8: Use F12, select the arrow control, then click on the element you're interested in.

In this case, it's 5 divs overlapping, widths 1-5px, all with a style of "filter: alpha(opacity=x); opacity:0.x;", x going from 10 to 02