'; echo '1. Set Private Browsing off. (Settings -> Privacy & Security -> Private Browsing)
'; echo '2. Refresh the page.
'; echo '3. There should be a dialog for you to input username and password again.
'; echo 'If you can\'t see the dialog, this test fails.
'; exit; } else { header('WWW-Authenticate: Basic realm="My Realm"'); header('HTTP/1.0 401 Unauthorized'); echo "Authorization Required."; exit; } ?>