I think more casual users would have given up and bought their gear elsewhere. I was stuck. I needed their Tech Support. The site is fixed now. They use a JavaScript solution.
Testing is critical.
If you use Netscape, you probably cannot see the Flash-based message above. With IE or on a local hard drive with Netscape, the file will look just fine. As Web plug-in technologies go, Flash is pretty dependable and consistent. That does not mean that it always works as planned. Software has bugs and all Web multimedia carries with it a certain percentage of failure.