Fixed issue 05793: Javascript function for "please use navigation button" don't work
Dev it is no OK to use F5 to reload the current page - F5 will not save data, nor show any error messages (so any data entered on the page is lost)
Dev All tested browsers (Firefox, Chrome, Internet Explorer) were expiring older pages. So, given that, and the fact that users should use the Previous button if they want to go backwards, did not attempt to support use of browser back button in lieu of Previous button.