Im using this code to position an image at the bottom of the body:

background:#FFF url(../image/body.jpg) repeat-x 0 100%;

It's wierd though, in FF it only extends to the bottom of the content. Currently there is only a really small div in there so the background image only shows as far down as the bottom of the div.

If I just scrap the image and change the background to red, it then takes up the whole page, the way it should with an image.

If that makes sense??

It works fine in IE though so I can't think what the problem is!

I've just fixed it with:

html, body {
    height:100%;
}

I never thought you could use percentage heights though?

Of course you can, nothing at all that prevents it