The note below is not an error message - it is only a recommendation!

This application works better with MS Internet Explorer versions 9 and above and Google's Chrome browser.  It is strongly recommended that you install the latest Internet Explorer if that is your browser of choice.

In addition, most likely cause of an unresponsive page is an older cached version of  itself.  You can resolve this problem by forcing a fresh page load by pressing the Ctrl key and the F5 key together.