Certificates - 3:22 am on Oct 26, 2011 (gmt 0)

Alt; that's it, you've cracked it. It's now working perfectly.

I had done part of what you suggested but I had assumed that this bit was a link to read (though it wouldn't open)

"http://www.w3.org/TR/html4/loose.dtd">

I didn't realise that it should go in my html document.

Thank you all very much for your patience and help. You've all been great

Thanks

Antony