I am developing an ASP application where there are a couple of pages with a "logoff" button on it. when the user clicks on it it will bring the user back to the logon page. but the user can still click the "back" button and reenter the previous page. Is there a way to disable the "back" button once the "logoff" button is clicked? or I have to use session variable and "response.expires=0" to solve this problem? since IE5 is our browser, client-side VBScript would be considered.<BR><BR>Thanks a lot for any advice or sample code!