Here is a very rough example,  keep in mind there a several  factors that
can reset the timeout to happen in the server and then you need to reset
your timer in the client,  the most troublesome to handle are ajax
interaction and iframe.

So assuming you don't have any ajax component or iframe on the page that can
actually trigger any server interaction and the user just sit in the page
and wait, something like this is the easiest way:

setTimeout("showAboutToTimeout()", (1000 * (60 * 28) );  //28min

function showAboutToTimeout(){
  // Here you can build you message or show floating div, what ever you like
  alert("Your session may timeout in 2 minutes unless you interact with the
page :) ");
}

On Wed, Sep 1, 2010 at 11:52 AM, fachhoch [via Apache Wicket] <
ml-node+2403332-1651621642-65...@n4.nabble.com<ml-node%2b2403332-1651621642-65...@n4.nabble.com>
> wrote:

> I can do that, do you have any examples for java script notification when
> session is about to timeoout ?
>
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-- 
Sincerely,
JC (http://www.linkedin.com/in/jcgarciam)
Work smarter, not harder!.

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