PHP Source of http://www.andlabs.net/html5/rejectCOR.php:
<?php
if($_SERVER['HTTP_ORIGIN'] == "http://www.andlabs.org")
{
echo date('l jS \of F Y h:i:s A');
header('Access-Control-Allow-Origin: http://www.andlabs.org');
}
else
{
exit();
}
?>
To make a request to this page from www.andlabs.org and view the response click here.
Try making the same request from some other domain and capture the response in a proxy. The response would be blank.