Script Summary: Saves you one click when switching accounts with the new Google top navigation bar.
License: Creative Commons Attribution 3.0 Unported License
Update 6/2012 Google have changed navigation bar once more some time ago; all accounts are available on first click, making this script unneeded.
During February 2011 Google rolled out new top navigation bar, which is used for switching services, access to settings and also account switching.
Unlike the old bar, the new one requires 3 clicks to switch account.
This simple script currently just adds a few styles to show the available accounts on first click.
Tested with Greasemonkey and Scriptish, should work with others.