node.js app enable cors

app.configure(function(){
  app.use(app.router);
  // the following middlewares are only necessary for the mounted 'dashboard' app,
  // but express needs it on the parent app (?) and it therefore pollutes the api
  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(express.cookieParser('Z5V45V6B5U56B7J5N67J5VTH345GC4G5V4'));
  app.use(express.cookieSession({
    key:    'uptime',
    secret: 'FZ5HEE5YHD3E566756234C45BY4DSFZ4',
    proxy:  true,
    cookie: { maxAge: 60 * 60 * 1000 }
  }));
  app.use(function (req, res, next) {
    // Website you wish to allow to connect
    res.setHeader('Access-Control-Allow-Origin', '*');
    // Request methods you wish to allow
    res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
    // Request headers you wish to allow
    res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
    // Set to true if you need the website to include cookies in the requests sent
    // to the API (e.g. in case you use sessions)
    res.setHeader('Access-Control-Allow-Credentials', true);
    // Pass to next layer of middleware
    next();
  });
  app.set('pollerCollection', new PollerCollection());
});