IE doesn't support transparency very well in PNG's (all IE versions prior to IE7) - you can get around it though using some script.
Gif transparency works to some decent extent in most versions of IE.
 
Check here for more info, and a possible workaround for the PNG problem:
http://homepage.ntlworld.com/bobosola/pngtest.htm


From: users-bounces@xwiki.org [mailto:users-bounces@xwiki.org] On Behalf Of mattia_temp-newsgroup@yahoo.it
Sent: 10 January 2008 11:01
To: XWiki Users
Subject: [xwiki-users] Graphical problem

Hi everybody,

Sorry for the silly question, but i have an annoying problem on custom icon visualization.

The background of them appear correctly transparent in firefox, instead in explorer it appear as "lightgrey" (as shown in the image attached)

The png have been created with Paint.NET 3.0...

Does anyone had the same problem? How do you solve it?

Thank you!!

Mattia



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