"Scribd" embeded reader not opening to full size

I use Scribd (www.scribd.com/) to embed documents in my blog. I have never had any issues with this service. I am building a new site with Atahualpa, and the small button on the Scribd window that enlarges the window to full size just doesn't work in Atahualpa.....I pretty novice here, but I think its some kind of flash type issue?

Any help would be appreciated. I really love the Scribd platform for storing and presenting my documents, many which are huge pdf files.

thanks, Doug