My browser locked up 30 or so minutes into using the calculators. This does not happen to often. Your computer was most likely low on resources. This could be overkill, but it may be a good idea to start your session after a fresh reboot of the computer. If this continues, contact your computer Technician for additional troubleshooting.
Some pages display a grayed out box or rectangle.
These are JAVA enhanced buttons or scripts. Depending on your dialup connection rate, if after 30 seconds there is still nothing displayed, your option to display JAVA is probably turned off in your browser. In the future we plan to have additional help screens to guide you through changing JAVA options in your browser. I received the following message. Again, In the future we plan to have additional help screens to guide you through changing JAVA options in your browser.