If you are using a modern browser (I tested FF and Chrome), all you need to do is copy the link below to your bookmarks by dragging it over to your bookmarks bar, and when you click on it all of the boxes and tools on the screen will go away and give you an unobstructed view (or come back if they are already gone).
Hopefully you'll find this a useful tool.
Updated August 17,2015 to fix the broken bits