Thanks Balinor for the quick reply, silly question but do you sleep??
Apart from your ESP knowing I was running CDSEO Pro on this site, I tried what your link provided as:
<a href="{$smarty.server.REQUEST_URI}#TOP">Back to the top</a>
and now I get a File not found error, because the "Back to top" link points to
http://mydomain.com.au/cdseopro.php.
Perhaps it will be best if I open a ticket with Jon so you can get on with more important things in life like sleep
thanks again