String nextUrl = "";
if (request.getParameter(authManager.getTokenParam()) != null) {
// The user is being redirected back from google.com to exchange the AuthSub one time
// use token for a session token.
authManager.storeAuthorizedToken(request.getQueryString());
nextUrl = MainServlet.MAIN_URL;
} else if (request.getParameter("action") != null) {
if (request.getParameter("action").equals("revoke")) {