Auto login with session data

[jamie]

Hi,

Can anyone please assist with autologin of a Roundcube session based on session data?  

If Roundcube is run in an embedded iframe, I need to reference a username and password in an existing session.  However, if session_start() is placed in index.php of the Roundcube installation, a blank page is displayed.  I assume this is because session_start is called later in the login process?

Any help would be appreciated.

Many thanks.

Jamie