Robert O'Callahan (Novell) <roc@ocallahan.org> has granted Boris Zbarsky
<bzbarsky@mit.edu>'s request for superreview:
Bug 311615: [FIX]Fix for bug 286491 was a little too aggressive
https://bugzilla.mozilla.org/show_bug.cgi?id=311615

Attachment 198878: Proposed patch
https://bugzilla.mozilla.org/attachment.cgi?id=198878&action=edit

------- Additional Comments from Robert O'Callahan (Novell) <roc@ocallahan.org>
okay. And I see that in the other case --- inline changing to block --- the
ContentInserted call will reframe the containing block. You might want to
indicate this in a comment somehow or maybe it's just obvious...