Script Summary: Netbook Mode (show only message pane). Hides the ads, so the message pane is full width, but ALSO shows the gadgets (maps, events) as a popup. Overall, more space for your messages :)
As featured on Lifehacker
Small netbook screens make you really appreciate every last pixel on your device. The Mini Netbook Gmail userscript for Gmail adds a "netbook mode" shortcut to Gmail that removes navigation and ads for a streamlined, netbook-friendly, message-focused view of your inbox.
Once installed, just tap 'w' to toggle between the default Gmail view and netbook mode. That's all there is to it. Assuming you've mastered Gmail's keyboard shortcuts, the lack of navigation isn't all that big of a deal—plus you can easily bring back the default view with a quick press of the 'w' key. The tweak is a little rough around the edges at times (I couldn't use 'g' + 'l' label navigation unless I toggled out of mini mode, for example), but it's a nice start, and could be really useful for netbook users.
11/03/10: Added option to show Footer. 13/10/09: Hide everything in Footer, except account activity 12/10/09: Changed default to showing footer. 29/09/09: A slew of Bug Fixes: pressing "w" would not work in Firefox when composing... I can't believe it took that long for someone to inform of this huge bug. And, the bug with long titles will be fixed as of version 4.1. 25/09/09: Fixed Bug with title. Secret Beta Feature added :) 10/09/09: Changed black box to "PRETTY" arrow 25/08/09: Fixed Bug where gadget box not shown on hover 22/08/09: Fixed Bug where title (and labels) could not be selected 07/08/09: Added new option to add padding to title line 03/07/09: Fixed change in Gmail 23/06/09: Realised not everyone else has the same...theme as me. so the background might clash. 22/06/09: Update the box so that it appears above everything else (z-index fail). And change the background color for a more distinct 26/03/09: Bug Fix! - Would show the black box even if there wasn't any information. 25/03/09: Bug Fix - Would show Ads inside the information box 24/03/09: Added new functionality - enabling user to see extra information by hovering over black spot. 08/03/09: BUG FIX - now working when "show details" 04/03/09: Fixed Gmail code change 25/02/09: Fixed Error on conjunction with Right-Side Label/Chat Lab feature
If you have web clips set up, then the position of the "forward all" will fail. Just disable web clips...they are useless anyway. If I get lots of demand for a web clip compatible version, I might think about changing the code...