Problem when using browder back button

From: Date: Thu, 05 Jun 2003 23:42:53 +0000
Subject: Problem when using browder back button
Groups: php.db 
Request: Send a blank email to php-db+get-28363@lists.php.net to get a copy of this message
I am a bit confused. I have built a web site from dynamic pages using PHP & Mysql. When a user selects an item from a drop down list that takes then to a detail page. When they click back on the browser button they get a message about the page has expired. Is this an issue of session or cookie? How do I correct this ?

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