Logout link on external page

[Chrissicom]

I am using 4images together with vBulletin 3.5.0 RC 3 in the same database and logging in works without problems. But the new hashing system prevents users from properly logging out through 4images because the new logout link => login.php?$session[sessionurl]do=logout&logouthash=$bbuserinfo[logouthash] ...tells 4images a variable $$bbuserinfo[... which it doesn't know of course. The old link with u=123 was less complicated and could be easily implemented on any external page. Can anyone tell me how to put a logout link on an external page now? Thanks for any advice in advance!