Comment 44 for bug 1084

As a variant on the userChrome.css tweak to put scrolls on the entire panel, I
tried creating one that put scrolls only on the expanded address lists:

#expandedtoBox, #expandedccBox {
  overflow: auto !important;
  max-height: 14em !important;
}

However, as with my test on applying the same thing to the attachments list
(bug 242531), this doesn't work as expected -- in this case, the expanded
list(s) never gets larger than one line, and no scrollbars are shown.