4 <meta charset=
"utf-8"/>
5 <title>Submission Flush Test
</title>
8 <form id=
"test_form" action=
"post_action_page.html" target=
"form_target" method=
"POST" onsubmit=
"return false;">
9 <button type=
"submit" id=
"submit_button">Submit
</button>
11 <iframe name=
"form_target" id=
"test_frame"></iframe>