How does everyone else do this? .php in URL

I have an area of our site where you can turn off certain 'systems' by clicking a button. This is all done in HTML and it brings up a javascript box to verify that this is really what you want to do.. It then does a header("location: ...") to redirect to a .php file that locks down the site. The problem is that the browser saves this in the history and sometimes will do complete this .php file in a URL and the site is locked down by accident. Is there a better way to call a certain function of the site rather than doing a header("location: ...") redirection? How does everyone else do this? Thanks! Mike ****************************************************************** This communication is for informational purposes only. It is not intended as an offer or solicitation for the purchase or sale of any financial instrument or as an official confirmation of any transaction, unless specifically agreed otherwise. All market prices, data and other information are not warranted as to completeness or accuracy and are subject to change without notice. Any comments or statements made herein do not necessarily reflect the views or opinions of Capital Institutional Services, Inc. Capital Institutional Services, Inc. accepts no liability for any errors or omissions arising as a result of transmission. Use of this communication by other than intended recipients is prohibited. ******************************************************************