all you need to do is construct a query string using names & values, pass it to send(), i.e.
that way, you're simulating how the form variables are passed to the server.
where 'user' and 'email' take the place of form field names, and 'john' and '[email protected]
' their respective values.
In general, to be safe, you need to call encodeURIComponent() for each arg name and value, as in the serialize() function on pages 540 - 541