Lack of support of PNG on IE6
Recently, I added a logo on my website and used it for a while without any problem under IE7 or Firefox. Both of them are what I've used for now. However, yesterday, I worked on an old machine that has IE6 installed. I tried to go to my website and found that the logo which is PNG file didn't work well in IE6. The transparent area went grey in IE6 So, I've looked for the method to solve the problem. Many of them are as below : 1. Microsoft Knowledgebase