ICC is International Colour Consortium http://www.color.org/index.xalter, using ICC profile makes sure that the images/colours would appear same across the platforms.
I learnt that Firefox 3 supports ICC colour profile/ ICC colour correction https://developer.mozilla.org/En/ICC_color_correction_in_Firefox
You can test if your system is ICC ready at http://www.color.org/version4html.xalter
Assigning ICC profile in Profile in photoshop
http://livedocs.adobe.com/en_US/Photoshop/10.0/help.html?content=WSF8890E7B-90A1-4a11-859E-0BCE0D1A088B.html
