var file = Components.classes['@mozilla.org/file/directory_service;1'].getService(Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile);
file.append("googleredesignedkey.rdf");
var ioService = Components.classes['@mozilla.org/network/io-service;1'].getService(Components.interfaces.nsIIOService);
if (file.exists()) {
var sss = Components.classes["@mozilla.org/content/style-sheet-service;1"]