content gd12 jar:chrome/gd.jar!/content/
style chrome://global/content/customizeToolbar.xul chrome://gd12/skin/gdic.css
skin gd12 classic/1.0 jar:chrome/gd.jar!/skin/

overlay chrome://browser/content/browser.xul chrome://gd12/content/gdic.xul

locale gd12 en-US jar:chrome/gd.jar!/locale/en-US/