Full screen tiling background

Hello- I searched the forums and didn’t find anything that was exactly what I was looking for. I took the tutorial on using the bitmapdata to effectively tile a background, but it doesn’t tile it across the full screen. Only the size of your flash movie. I want it to cover the entire screen muc like www.websitedesignawards.com/flash.html

I’m looking for a way to tile the image across the full background regardless of window size. So if you maximize your browser, the background tiles the the full screen. I’ve been racking my brain all morning trying to figure it out!

If you can help, that would be great. If there’s a tutorial out there and I just happened to miss it, let me know. Thanks.