Don't tell me, you use IE8 or 9?
Anyway, if is the same as our pageant champagne, remove the filler assembly, open the external door, remove cassette, remove screws that hold the rear part of toilet to front part (these are easily accessable) and finally, there are 4 screws that screw down into the caravan floor, I had to use a cranked screwdriver to remove these. You should now be able to remove the toilet from the inside but watch out for pipes wires etc.