It is very important for your Internet browser and Flash player to be updated to their latest versions. I have seen many strange screen display problems go away when the Flash player is updated, for example. Remember to restart your web browser after the update.

Click here to see what the calculator is supposed to look like. If it looks different, then something is wrong.

Due to the unpredictability of the Internet, sometimes the calculator doesn’t look quite right even if you have the latest version of the Flash player loaded. It is safe to use the calculator as it is or just refresh the web page to trigger a reload.

I hate having to take sides, but consistently I’ve found that Mozilla Firefox and Apple Safari simply work better than Internet Explorer and Opera.