if ($use_mailbox_cache && session_is_registered('msgs')) {
showMessagesForMailbox($imapConnection, $mailbox, $numMessages, $startMessage, $sort, $color, $show_num, $use_mailbox_cache);
} else {
if ($use_mailbox_cache && session_is_registered('msgs')) {
showMessagesForMailbox($imapConnection, $mailbox, $numMessages, $startMessage, $sort, $color, $show_num, $use_mailbox_cache);
} else {