if its a php page you can use.

You can use the pragma :nocache header in your script code
to force out any cache instances.

---------------------------------------------
Before you output any HTML data put this in your script

Header("Cache-control: private, no-cache");
Header("Expires: Mon, 26 Jun 1997 05:00:00 GMT");
Header("Pragma: no-cache");

---------------------------------------------

Additional to that you can add

header ("Last-Modified: " . gmdate ("D, d M Y H:i:s") . " GMT");

and following html-Tag

<META http-equiv="expires" content="0">

if its an asp page  you can add

<% 
    pStr = "private, no-cache, must-revalidate" 
    Response.ExpiresAbsolute = #2000-01-01# 
    Response.AddHeader "pragma", "no-cache" 
    Response.AddHeader "cache-control", pStr 
%>