content firebug jar:chrome/firebug.jar!/content/firebug/
skin	firebug	classic/1.0	jar:chrome/firebug.jar!/skin/classic/
skin	firebug-os	classic/1.0	jar:chrome/firebug.jar!/skin/classic/win/
locale	firebug	en-US		jar:chrome/firebug.jar!/locale/en-US/
locale  firebug hu-HU       locale/hu-HU/

overlay chrome://browser/content/browser.xul         chrome://firebug/content/browserOverlay.xul
overlay chrome://global/content/customizeToolbar.xul         chrome://firebug/content/customizeToolbarOverlay.xul