Greasemonkey: Translation for GMail Content

Adds a button to translate the latest entry in a conversation. The result is displayed in an overlay.

You can configure the target language based on the available translation matrix offered by Google as well was other parameters.

The source can be downloaded at Translation for GMail Content (Greasemonkey User Script) or http://userscripts.org/scripts/show/25678.

Update Feb 2010: This is now obsolete as Google has added similar functionality in GMail.