Janrain integration into Django using built-in django.contrib.auth package. It creates a django user using django.contrib.auth.models.User on first login and retrieves that User object on future logins.

Add a url entry in urls.py:

urlpatterns += patterns('',
        (r'^janrain/', include('janrain.urls')),
)

Add janrain to your INSTALLED_APPS:

INSTALLED_APPS = (
        'django.contrib.admin',
        'django.contrib.auth',
        'django.contrib.contenttypes',
        'django.contrib.sessions',
        'janrain',
)

Add janrain.backends.JanrainBackend to AUTHENTICATION_BACKENDS:

# put janrain.backends.JanrainBackend first
AUTHENTICATION_BACKENDS = (
        'janrain.backends.JanrainBackend',
        'django.contrib.auth.backends.ModelBackend',
)

Add your janrain api key to settings:

JANRAIN_RPX_API_KEY = "0123456789abcdef0123456789abcdef0123456789abcdef"

Configure your token_url in janrain to be http://yoursite.com/janrain/login/

Create a template called janrain/loginpage.html to contain your janrain login iframe:

<iframe src="proxy.php?url=http%3A%2F%2Fyoursite.rpxnow.com%2Fopenid%2Fembed%3Ftoken_url%3Dhttp%7B%25+if+request.is_secure%28%29%25%7Ds%7B%25endif%25%7D%7B%7B%28"://" + request.get_host() + "/janrain/login/?next=" + next)|urlencode}}" scrolling="no" frameBorder="no" allowtransparency="true" style="width:400px;height:240px"></iframe>

Place your javascript overlay sign in buttons in your template:

<a class="rpxnow" onclick="return false;" href="proxy.php?url=https%3A%2F%2Fyoursite.rpxnow.com%2Fopenid%2Fv2%2Fsignin%3Ftoken_url%3Dhttp%7B%25+if+request.is_secure%28%29%25%7Ds%7B%25endif%25%7D%7B%7B%28"://" + request.get_host() + "/janrain/login/?next=" + 'http://yoursite.com/redirect/to/path/')|urlencode}}">Sign In</a>

Create a button to hit /janrain/logout/ to log out.