This article, part 5 of a series on image optimization, talks about the use of transparent PNGs with IE6 and why the AlphaImageLoader hack is bad and a very interesting solution
This installment of the image optimization series is about the IE-proprietary AlphaImageLoader CSS filter, which developers often use as a workaround to solve transparency issues with truecolor PNGs in IE. The problem with AlphaImageLoader is that it hurts page performance and, therefore, hurts user experience. I argue that AlphaImageLoader should be avoided when at all possible.
