Proper way to do a WP7 Facebook login dialog
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Using Facebook C# SDK, 
I use GetLoginUrl with following parameters: 

    var parameters = new Dictionary<string, object>();
    parameters["client_id"] = FacebookSettings.AppID;
    parameters["redirect_uri"] = "https://www.facebook.com/connect/login_success.html";
    parameters["response_type"] = "token";
    parameters["display"] = "page";
    parameters["scope"] = ExtendedPermissions;

and render the response in a WebBrowser control. 
However, the response is a standard web page, which is unsuitable for use in a cellphone. 
Howe would I go about getting the mobile login dialog?