Stuck on "PDF Loading"

[adam-jones-net]

I have embedded this in a site I'm building. I've applied the most basic implementation without tabs etc.

The site is running wordpress which is already embedding jquery so the only change I've made really to the example code is to remove the script link to googleapis.com hosted copy.

Anything obvious I'm doing wrong here? You can see the test at http://www.anderson-sheppard.co.uk/preview/pdf-test/ (you need to login with preview123)