birdbrain - 10:30 pm on Apr 14, 2013 (gmt 0)
Hi there Marshall,
The CSS birdbrain provided will not smoothly increase the image as on your demo page.
I know that I am a bald headed old fart and that my eye sight may leave a little
bit to be desired, but the CSS transition does seem super smooooooooth to me. ;)
Of course, you may have only tried my little effort with IE6, and missed it altogether. :)