iepngfix

http://www.twinhelix.com/css/iepngfix/

Known Issues

Tell me about them as you encounter them :). Currently I can only think of these:

* Can't help IE versions prior to 5.5, sorry.
* Users can't right-click-save processed PNG images, they'll save the blank GIF file if they try that. In some cases this might be a feature, not a bug...
* The script detects the ".png" extension in image URLs. So if you have a CGI script that generates a PNG image, you may have to rewrite parts of the script, or just cache them as PNG files somewhere.
* It's most reliable on elements with non-'auto' dimensions set. So, give images and other elements width/height values; '100%', '10em' and '200px' and so on are all OK.
* Background PNG images can't be tiled. This is a limitation of the IE filter.
* Similarly, padding and borders don't indent the PNG image. An easy fix for this is wrapping your PNG images in container DIVs or similar.
* There may be about a short time as soon as the image loads when images are not transparent, before the IE filter kicks in.

Demo: