RE: Transparency on file...

Pete
 
The transparency will show on the PNG if you link directly to the URI  http://www.w3.org/Icons/valid-html401 and not take a local version of the GIF.
 
This above URI seems to work out if the browser can display PNG, if it can it supplies a PNG with transparency. If it does not, it seems to supply a GIF without transparency. I agree - the GIF should have transparency also. However, most of your viewers will be able to view PNG.
 
Here is an example of where we used this recently:
 
http://www.manganese.com/contact.php
 
Jake
 

Hi,
 
I've spent quite some time getting most of my sites to have valid HTML and CSS and I'm proud to display your "Valid!" images on them.
 
However, I noticed that your "Valid CSS!" and "Valid XHTML1.0" images contain a partial transparency behind the tick while the "Valid HTML4.01" image that I display does not.  Is it possible for this transparency to be added as I would very much like to have uniformity between the two images for cosmetic reasons.
 
Many thanks,
 
Pete Tozer
 
http://www.w3.org/Icons/valid-html401