How to create a shadow in HTML, CSS & JS that doesn't accept clicks, but let it hit behind that layer?

How to create a shadow in HTML, CSS & JS that doesn't accept clicks, but let it hit behind that layer?

I have a some windows in my JS+HTML application. As every window has drop shadows, when somebody clicks near the window and hits the drop shadow layer, I would like to hit the other window that is 开发者_如何学编程behind.

I use jQuery*

How to do it? thanks

---

http://www.css3.info/preview/box-shadow/