content     RKiosk    content/
overlay chrome://browser/content/browser.xul   					chrome://rkiosk/content/rkioskbrowser.xul
overlay chrome://mozapps/content/xpinstall/xpinstallConfirm.xul 	chrome://rkiosk/content/rkioskxpinstallConfirm.xul
overlay chrome://mozapps/content/downloads/unknownContentType.xul	chrome://rkiosk/content/rkioskunknownContentType.xul