Notice about using OPERA
Some people are getting a message on the OPERA website saying ‘An error occurred’. If this happens to you, please press the ‘Restart’ button and the tool should work again.
If you are having problems when viewing the tool using Internet Explorer 10 browser, choose 'enable compatibility view' using the button in the browser (see highlighted portion of the image below) to fix the problem.
We're sorry for any inconvenience.