How to make an image opaque on Mac IE and Netscape?

I am able to display an image as opaque by assigning the image a class with
the following proprties:

..grayimage {
opacity: .5;
filter: alpha(opacity=50);
}

The above class definition works when viewed on all of the PC browsers we've
tested (IE, Firefox, Opera, Netscape) and on Mac (Safari, Firefox).

However, it has no effect when viewed on the Mac IE and Netscape.

Is there no support for the properties in this css for Mac IE/Netscape, or
do we just need to apply different values for those? (and what might those
be?

Many thanks!

On Tue, 06 Mar 2007 21:43:24 +0100, Mark Findlay <mfindlay@speakeasy.org>
wrote:

> I am able to display an image as opaque by assigning the image a class
> with
> the following proprties:
>
> .grayimage {
> opacity: .5;
> filter: alpha(opacity=50);
> }
>
> The above class definition works when viewed on all of the PC browsers
> we've
> tested (IE, Firefox, Opera, Netscape) and on Mac (Safari, Firefox).
>
> However, it has no effect when viewed on the Mac IE and Netscape.
>
> Is there no support for the properties in this css for Mac IE/Netscape,
> or
> do we just need to apply different values for those? (and what might
> those
> be?
>
> Many thanks!
>
>

I'm sorry, but I don't know the answer to your question. How about solving
the problem in an other way: using f. i. 24 bits png-images? If you rely
on the image changing by some event, you could use javascript or plain
css. (Depends on the images placement related to the element that causes
the event.)

--
There are 10 types of people: those who know binary, and the others ...