If you scroll with the mouse wheel they disappear after a couple of seconds. If you scroll by dragging the scrollbar thumb they disappear as soon as you let go of the thumb.
http://www.italianproperties.co.uk/test/info.html
Firefox 19
I don't see this as a big problem - just reporting this in case it's a symptom of a larger issue.
« Last edit by admin on Sun Mar 17, 2013 12:10 pm. »