Is it possible for me to use javascripte to read session in the start.pstpl? if yes, how? thanks again.

In more details:

If there is a session variable exampleid. In some case it's value is 99999999, other 99999998.

In the startpage.pstpl, I would like to check the value is 99999999 or 99999998. If it is 999999, alert and jump to a customer page (such as www.example.com/example/login.php ). If it is 99999998, go ahead and pass 9999998 to a question in the survey.

Is it possbile? And how?

This need to be done in ajax, not in js only.

Or you can just use cookies :
- www.quirksmode.org/js/cookies.html
- developer.mozilla.org/en-US/docs/Web/API/document.cookie

Thank you very much, Densi!

Is ajax very diffculty? If possbile, would you please let me know how to read the session using ajax? thanks again!