There is no guaranteed way to force loading a fresh page. Old page may
be loaded from browser's cache, the proxy's cache or the server's cache.
If you're using ASP, put in the very top of your page before the <HTML>
tag):
<%
Response.ExpiresAbsolute = Now() - 1
Response.AddHeader "Cache-Control", "must-revalidate"
Response.AddHeader "Cache-Control", "no-cache"
%>
And if not using ASP, you can try these:
<META HTTP-EQUIV="expires" CONTENT="Wed, 03 Nov 1999 12:21:14 GMT">
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<meta http-equiv="Cache-Control" Content="no-cache">
....PC