#13 Images in right_main.php

[EuRoZaC]

All works good when accessing the webmail via a dedicated/virtual host - http(s)://webmail.domain.com

However when accessing via an alias - http(s)://server.domain.com/webmail the icons for Move, Forward, Read, Unread, Delete do not display due to their path in the css:
background-image: url(/images/icons/not_read_header.gif);