I'm baffled by this:

Page 1 - Lines appear: http://www.imperfectsamples.com/website/samples/index.php

Page 2 - Lines vanish: http://www.imperfectsamples.com/website/sa...prightpiano.php

The code is identical in both pages- the only difference is the content table. If I make the lines 2pixels high in page 2, it suddenly re-appears, but I can't work out why. The lines should appear in both pages.

I've been trying to fix this for some time, so any help much appreciated.

You have the URL wrong.
../../images/line.jpg
or as you have it for the logo
/website/images/line.jpg

This doesn't seem to be anything to do with server scripting -- the problem presumably is in the markup.

Where are the lines supposed to come from? If CSS, this belongs in the CSS forum; otherwise Markup...

_How_ have you been "trying to fix this"??

D'oh! Thanks