[TYPO3-dev] Gifbuilder image quality problem

[Bernhard Kraft]

Joerg Wagner wrote:
> Actually your background is already transparent but IE does not show 
> transparencies in PNGs, and beside that only those pixels are transparent 
> where no content and no shadow is rendered. In FireFox it already looks much 
> better, but for IE you are still bound to use GIFs if you need transparency.

That is not fully correct this way !

IE can of course handle png with transparency ! But only such with binary transparency
(0/1 transparent pixels) like in .gif ... and no alpha-channels (0-256 transparency levels).
Those are quite well supported by FF.

You can get those alpha-channel pngs to work in IE with an ugly CSS hack for which an extension
is available (ie5pngfix or such)

AFAIK IE7 will support transparency layers out of the box.


greets,
Bernhard