Xapti - 10:22 pm on Jun 30, 2008 (gmt 0)

I'm not sure how older version of firefox work with what you wrote, but I would think that the display:-moz-inline-box is getting replaced with display:inline-block since it's the most recent item... I'm just guessing, since maybe it ignores the display:inline-block if an older version encounters -moz-inline-box...