How to make the Vshare "fullscreen"?

Hello!

I have the problem that one video on my server is 16:9. I must size up the player.
But if I do this, this happens:
http://www.abload.de/thumb/speedjevv.png

which div I must make bigger? I don´t find it :(
I want that the grey background doesn´t appear. The complete site shall "stretch" over the monitor.

Sorry for my english, it is hard to describe what I mean ;)

Bye,
nitramf