CSS help required

[Inquisitor]

Here's the site in question:
http://www.britishspacecorps.co.uk/

What I want to do is get the site container (<div id="container">) to extend all the way to the bottom of the page, regardless of how much content there is, but I can't work out how to do it

Any ideas?

Thanks

 

[Inquisitor]

If it's going to be that much trouble, I'll probably just abandon it, seems to be more trouble than it's actually worth really.

Thanks for the replies though