Creating Shadow Background like Levaquin.com

[tonto11]

1) Script Title: CSS Fixed Layout #3.1

2) Script URL (on DD): http://www.dynamicdrive.com/style/la...d-fixed-fixed/

3) Describe problem: I'm trying to give my website, which uses the CSS 3 column template, a background similar to www.levaquin.com with the shadow side margins. Can someone provide me with a tutorial? Thanks!

[g4guitar]

Go to the website and right click to one side then select 'View background image' and it will make sense how they got the shadows at the edges.