3 <form method="POST" action="done.html" onsubmit="return true;" id="testform">
4 <input type="text" id="username_field" name="username_field">
5 <input type="password" id="password_field" name="password_field">
6 <input type="submit" id="input_submit_button" name="input_submit_button">
9 <button id="submit_button" name="submit_button"
10 onclick="document.getElementById('testform').submit()">