Problem with style

[mcyates]

I have changed my background on the forum from a plane light green colour. To having a iamage of grass on the bacground.

the forum looks like this: http://www.myfootballforum.com

But some members are seeing it like this:

and

What could the problem be?

Just an updade, i've fixed it, this was the coulprit:

<base href="./" />

It was in the showthread template.