I clicked on the 'Start Calculator' link, but nothing happened - what's wrong?

The problem may be that you have 'pop-up blocker' software installed, and this software is blocking the webTOD calculator window from appearing. You may need to configure your pop-up blocker software to allow pop-ups for our web site so that the webTOD calculator window can be displayed. Most pop-up blocker software has configurable options for allowing pop-ups on user-selected sites.