You get this error when the calendar date selector in your application:
XXX is a reserved identifier. Warning: non-standard document.all property was used. Use W3C standard document...
This error occurs when your web browser has disabled JavaScript from running. This error occurs most frequently in Firefox and Netscape browsers.
In your Netscape or Firefox browser, set the browser's 'Site Controls for localhost' to at least include:
Allow images to be displayed
Allow Cookies
Enable JavaScript
Part VII: Troubleshooting Applications