Image Transparency and CSS

I heard of people using CSS stylesheets to define the color in an image to appear transparent. Anyone know how to do it?

You heard wrong.

Image transparency is done when the image is created/edited. Generally br specifying whic of the index colours should be see-through.

Well no, not exactly. Some browsers respond to the 'filter' attribute of CSS.

http://hotwired.lycos.com/webmonkey...ml?tw=authoring

I stand corrected.

Personally I would prefer to manipulate the image directly as I could set transparency at the same time I did blurring, anti-aliasing etc.

The example you sent has a particulary bad transparent image looking very blocky around the edges.

Maybe if he had done the transparency in a paint package he would of been tempted to do that at the same time...

Didn't say that it was any good though... the only thing I've ever used the filter style for is to annoyingly fade text up to attract attention.