Reverse flight that's really uncool.
That site you linked to is just hosting the Biggles Software on line - more than likely unauthorised.
The owners of that software have been notified - take your link down.
Guys spend alot of their own resources to develop this sort of resource for a pretty small market - they don't need to get ripped off on the small market they have.
Why don't you actually pay to purchase the software:
Biggles Software :: Airbus A318/A319/A320/A321 Flight Crew Operating Manual (FCOM)
If you're flying an A320 - you should be able to afford it.