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IE7 and IE8 can display 32bit (24bit for RGB + 8bit for alpha channel) PNGs fine by the way. IE6, of course, only supports alpha transparency on 8bit PNGs.

• rimantas 16y ago
  IE6, of course, only supports alpha transparency on 8bit PNGs. IE6 does not support alpha transparency, in this case it treats colos with alpha component as fully transparent i.e. PNG8 with alpha transparency is treated as with index transparency.
  • davej 16y ago
    Yes, you're correct.