Sundeck on a 1996 Prostar

[Sierra Tango II]

I was checking out this boat and noticed the back seat and how it had the ability to be raised to extend the back of the pad making more of a sunpad. Has anybody ever seen anything like this? If so is it possible on a 98 Prostar? I bought my boat in the fall, right before I put it in heated storage for the winter and unfortunatley I cant get at it to see if mine has this capability or not.

http://fortwayne.craigslist.org/boa/3584042144.html