- when using under iframe there were some rare cases where dead lock occured while trying to close session on main parent refresh. That was because of unexpected event sequence when using with iframe. That is fixed now.
- when running under iframe and accident page refresh the program does extra work to restore the session instead to start new session. Doing so, page refreshs under iframe are now safe.
- when running under iframe we disallow accidental back button for modern browsers at least until page close or logoff.