Ive looked at your page in both IE6 and Firefox/3.0.5
IE6
Mouse over shows the name of the plant as tool tip text.
Firefox/3.0.5
Name doesn't show as in IE6
However if I right click and view properties, it says
e.g. Alternate Text: Phlox paniculata Harlequin
Which I have to add is an interesting plant!
Oddly, some images don't show in Mozilla Firefox.
The entire columns 4 doesn't show.
Row 2, Image in columns 2 and 3 are missing
Similarly for rows 4, 6, 8, 10, 12 and 14
Ive clicked Reload twice.
Now heres the odd bit. If an image is not shown, I would expect Alt-text to show in its place.
It doesn't. Those positions are blank
Right clicking n the "missing images" give me things like View source, but no alt text (i.e. looks like page properties rather than image properties)
Now (like you) I'd like to hear from others with Firefox.