You know, I may be butting in a bit too much here, and feel free to disregard this triviality, but...
I looked at how you built your shadow graphics around your content, and you may not know that you can achieve this effect in a much easier fashion with a little css cheat. If I recall correctly it won't work for firefox, but it degrades very nicely.
In that center content section you just wrap that in a div or table tags -- though div's are preferred in css. Then you wrap that with another div with a
class of dropshadow. Then in your css you define the dropshadow class as something like this:
.dropshadow{width:700px;padding:8px;filter:shadow(color:gray,strength:5, direction:135)}
That filter will add a drop shadow to what you have wrapped with that div. It's not foolproof, but it's a much simpler way to get the effect you were looking for and seeing as your external css shows you know what you are doing in css, I figured I might as well mention it just in case you want to try it in the future.
Oh and I'd welcome your nice css styled free-sites at my LL.