These banners were part of a huge European wide Google Chrome campaign.
There were various sizes in the roll-out, including standard and youTube mastheads.
As there were so many translations, the banners were driven by a DoubleClick back end. Each banner is actually two swfs - one animation file, and a file containing the database driven translation and end frame.
300x250 - Easy to install
300x250 - Chrome browser
300x250 - Omni bar
300x250 - Security
300x250 - Speed
300x250 - Auto translate