<html>
<head><title>Post message subframe tests</title>
<script>
function postToOpenerFrame(msg, origin) {
window.opener.frames[0][1].postMessage(msg, origin);
return true;
}
window.addEventListener("message", messageReceived, false);
function messageReceived(event) {
// Change the title to generate a notification.
document.title = event.data;
}
</script>
</head>
<iframe id="frame1" src="frame_tree/1-1.html"></iframe>
</html>