Yes the new.gif and the spacer.gif both work now (on the test server). Only one that is still missing from my bug report is the up.gif
Here is a copy:
http://sloanspace.mit.edu/graphics/up.gif
and we should probably check
http://sloanspace.mit.edu/graphics/down.gif
http://sloanspace.mit.edu/graphics/right.gif
and
http://sloanspace.mit.edu/graphics/left.gif
too.
Carl