Show date and time for offline messages?
 

I am using a privat XMPP server with extraplugins jabber support. When a contact is offline the messaging application tells me so, but since the XMPP server is configured to store offline messages I can send them for later delivery. This works fine, however I like to see in my chat history the date and time when I send the offline message. All I can see is "offline", but no information is given when I wrote the message. How can I change this to display me date and time like my old N900 does?

Regards,
Nek