<html>
<head>
<script src="popup.js"></script>
</head>
<body>
<div>This popup contains a frame that triggers a POST navigation.</div>
<form id="form" method="POST" action="other_page.html">
Test field:
<input name="test-field" type="text" value="test-value">
<input type="submit" value="Submit">
</form>
</body>
</html>