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They are *NOT* HTML headers, they are HTTP headers. You need to send them before you write any HTML out. Matt -----Original Message----- From: web400-bounces@xxxxxxxxxxxx [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Joe Giusto II Sent: Wednesday, January 25, 2006 5:45 PM To: Web Enabling the AS400 / iSeries Subject: Re: [WEB400] Prevent Brower From Going Back To Credit Card Page Do these go before the <HEAD> tag? ----- Original Message ----- From: <Matt.Haas@xxxxxxxxxxx> To: <web400@xxxxxxxxxxxx> Sent: Wednesday, January 25, 2006 4:49 PM Subject: Re: [WEB400] Prevent Brower From Going Back To Credit Card Page <SNIP> Another thing you can do (you should actually do this anyway since you don't want transactional data cached) is make sure that you're doing a POST and write out the expire HTTP headers (these go after the Content-Type header): Cache-Control: no-cache Pragma: no-cache Expires: 0 When a person hits the back button, they'll get an error about expired data.
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