GWT Developer Tips - Use Event Preview
What I've learned from using Google Web Toolkit - Use the event preview. In registering an event preview, you can register a global listener for all events happening in the browser.
Justin Kitagawa of GoGrid, a cloud computing infrastructure service provider which enables you to deploy and scale load-balanced cloud server networks via a unique multi-server control panel. GoGrid was built with Google Web Toolkit and recently won Best in Show at LinuxWorld 2008.
Learn more about GWT at http://code.google.com/gwt