Right. If you click the "back" button, you're not sending a new HTTP request for the last page you saw, you're just asking the browser to display the page from it's history (cache).

This is the case unless the previous page received data from you via an HTTP POST form. The browser would then notify you that the page cannot be reloaded without resubmitting the POSTed data.


Take care,

Nik
http://www.bigaction.org/