So this would be a great extension if only it used a standard Ajax framework and not the bespoke framework.

If there is one thing we have discovered it is that whenever there is a problem of whitescreens or weird behaviour on our joomla sites - it comes down to the tags and their javascript.

If you are not going to do much with your site, all well and good. if you are, then expect to resource to manage JS problems.

What should Phil do: use a standard framewokr such as JQuery or some such.