I need to display a PowerPoint presentation the covers only the top say, third, of a screen.
The presentation will be used in an assembly where the projector screen is only lowered a small amount to allow things to happen on stage below.
The first way I thought of doing this was just blacking out the bottom of the screen with a box. However, this doesn't work well when you use themes for the slides which are designed to cover the whole slide (most of which is now blacked out). Animations also then look weird (because they are animating the whole slide as opposed to just the top section with content).
I've tried changing the size of the presentation, so that themes now work correctly, but when you present the presentation, it is centred to the middle of the screen (similar to how a film would look, with black bars above and below the video).
What I want to be able to do is align this to the top of the screen. Is this possible?
I'm using PowerPoint 2010, and Windows 7.
Thanks in advance, and if anyone has a better idea of how to accomplish this, please let me know!
EDIT:
This is what I get at the moment when presenting:

This is what I want:
