Hey Dani, when i kept my mouse over the CODE SNIPPETS its drops down a list. The Entire site listbox covers the PHP section.. I don't know whether the problem is with my IE.. Ive attached the screen shot, have a look at it. The file won't be that clear but you will get the idea of what i was trying to say.
This didn't happen to me. But I will say that I have had problems with the screen previews sticking before. I have moved my cursor over a link in which a screen preview pops up and sticks with my mouse :-/