Create a new bookmark in your browser with whatever name you like, and copy the above as the url. When you are viewing a google doc click the bookmark and it will collapse the pointless junk at the top (everything above the menu bar).
Only works on word docs, not on spreadsheets (which will collapse the top, but the bottom won't extend down). Only tested on documents and spreadsheets.
Feel free to offer any fixes to get spreadsheets to work.