Opacity in Mozilla 1.6 for MacOSX ?

"news.tiscali.dk" <[email protected]>
Newsgroups gmane.comp.mozilla.devel.macosx
Organization Customer of Tiscali A/S
Message-ID <[email protected]> 
I got problems using opacity in Mozilla 1.6. If I set the following style,
the image just completely disappears:
style="-moz-opacity:0.7;"

The problem only exists on MacOSX (in my case 10.2.8 - haven't tried the
other 10.x). Windows works perfect.

Release notes for Mozilla 1.6 says the following:
"The opacity implementation was completely revamped to properly change the
opacity of all descendants as a group."

The complete liste of new features can be read here:
http://www.mozilla.org/releases/mozilla1.6/README.html#new

I don't know how to read this and how my opacity will work again?

Any suggestions?
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