THE PROBLEM WITH ONLINECLARITY.CO.UK

http://www.onlineclarity.co.uk/friends/hexresults.php?nr=27

I spent a number of hours googling for a solution to this but it is mystifying.
It seems that onlineclarity needs the Yahoo User Interface (YUI) JavaScript library, but I can't find where this library is included. It seems that standalone browsers are some how including this library implicitly. The embedded version is not able to find this library.

Either that, or the standalone browsers are suppressing the script errors, but I don't think this is the case.