creating new Session.sessionid problem

[harry1911]

hi guys
i m storing my session.sessionid in database on user login but the problem is
this after logout if i dont use structclear(session) it doesn't create new
session.sessionid. and i want a new session.sessionid without closing browser.
and by using structclear it clears all session variables even cfid, cftoken and
sessionid etc.

thanks 4 ur help.:confused;