Version: 3.5.7 (using KDE 3.5.7, Debian Package 4:3.5.7.dfsg.1-4 (lenny/sid)) Compiler: Target: x86_64-linux-gnu OS: Linux (x86_64) release 2.6.21-1-amd64 From within the javascript dom style.opacity seems to do nothing. I believe it used to work using khtmlopacity, but that seems to have gone too. If you want a demo of it, goto any site that uses the scriptaculous library, for fade-in/fade-outs. Eg. http://wiki.script.aculo.us/scriptaculous/show/Effect.Opacity Theres a demo on that page.
Rendering of opacity is not supported in 3.x, but will be in 4.0 *** This bug has been marked as a duplicate of 69610 ***