Michael, a great site full of superb information. In fact I learnt quite a bit
I have a couple of suggestions the first of which is that the "What is Anxiety" page is given greater prominence, possibly on the contents page. It appears that you meant to as you put on the behavioural page "If you look back at the" I would never have found it, if I hadn't been to that page otherwise. The same goes for the Overall summary
The other thing is that if you use tables, you could put the animated gifs above your phrases on the Entrance page The gates should be a transparent gif
Of all the Things I've lost, I miss my mind the most