[SOLVED] Background image at top and bottom of site

I've tried searching - but I don't know what to search for!

I'm developing a site for a client here.

It's very much work in progress at the moment. I'm using a background image that repeats across the top.

Is there a way of doing a similar thing across the bottom as well - bearing in mind that the pages will all be different lengths? (At the time of writing this, the content is just filler text)

Hope that makes sense.

Carol