This script does only work with a browser that supports frames and JavaScript.
It was tested with Netscape 3, 4, 6 and 7 (Windows, Mac and Linux), Opera 5, Konqueror 3 and Internet Explorer 4 and 5 (Windows, Mac). It also runs with Opera 3 (decimal nubers only).
It does not run with Opera 4, with Konqueror 2 and with Browsers like Lynx or Mosaic that does not support frames and JavaScript.