if users press the browser's back button to reach the prior page..then page should display a message like "web page expired" in asp.net
<p>if users press the browser's back button to reach the prior page..then page should display a message like "web page expired" in asp.net</p>

<p>can i use javascript for this???</p>

<p>for example..</p>

<p>there are 4 pages in web sites. 1,2 and 3 can be back. but when the 4th page run then 4th page can not be back... when the user press browser's back button , diaplay ma message "weg page expired".</p>
