Auto login in Greasemonkey?

Question

I'm trying to make an auto-login using Greasemonkey.
Can anyone help me?

Relevant HTML source:

<div id="login-main">
  <div id="login-container">
    <div id="login-left">
      <div id="welcome">Welcome</div>
      <form id="login-form" action="auth/login" method="post">
        <div>
          <label for="rememberme">Remember me</label>
          <input type="checkbox" class="remember" checked="checked" name="remember me"/>

          <label for="email" id="email-label" class="no-js">Email</label>
          <input id="email-email" type="text" name="handle" value="" autocomplete="off"/>

          <label for="combination" id="combo-label" class="no-js">Combination</label>
          <input id="password-clear" type="text" value="Combination" autocomplete="off"/>

          <input id="password-password" type="password" name="password" value="" autocomplete="off"/>
          <input id="sumbitLogin" class="signin" type="submit" value="Sign In"/>
        </div>
      </form>

Answer 1

var f = document.getElementById("login-form");
f.elements.namedItem("email-email").value = "email@email";
f.elements.namedItem("password-password").value = "password";
f.submit();