Why can't I open my U2U on my blackberry is it a site restriction ?

I am sure there is a way around this, but I can't remember what it is. Something like a direct url for the u2u window maybe?

It's because the site uses javascript to open the U2U window. Use this direct link instead:

http://locostbuilders.co.uk/u2u.php

Because the Saudi gov't won't allow it!