Closed
Bug 309791
Opened 20 years ago
Closed 20 years ago
Absolutely positioned block element with opacity layered over Flash causes Flash object to disappear
Categories
(Firefox :: General, defect)
Tracking
()
RESOLVED
DUPLICATE
of bug 309790
People
(Reporter: af76, Unassigned)
References
()
Details
User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8b4) Gecko/20050908 Firefox/1.4
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8b4) Gecko/20050908 Firefox/1.4
Layering an absolutely positioned block element with CSS opacity of less than 1
over a Flash object causes the the Flash object to become invisible. The Flash
object must have its wmode set to transparent. Removing the opacity results in
correct rendering. Removing the wmode=transparent results in a visible Flash
object, but the block element is shown behind it, even if the z-index of the
element is higher than the Flash object.
Opacity On: <a
href="http://tisch.nyu.edu/page/opacityon">http://tisch.nyu.edu/page/opacityon</a>
Opacity Off: <a
href="http://tisch.nyu.edu/page/opacityoff">http://tisch.nyu.edu/page/opacityoff</a>
This was first noticed on the following page, where the "About Tisch" dropdown
menu slightly overlaps the Flash movie: <a
href="http://www.tisch.nyu.edu/">http://www.tisch.nyu.edu/</a>
This bug does NOT apply to Firefox 1.0.x on Mac or Windows. This only applies to
Firefox 1.5 on Mac OS 10.4.2. I haven't tested on Windows or other systems.
Reproducible: Always
Steps to Reproduce:
1. Embed a Flash object with wmode=transparent in page
2. Absolutely position a block element over the Flash object
3. Set CSS opacity on block element to less than 1
Actual Results:
The block element is shown correctly, but the Flash object is invisible. The
Flash object still has clickable links and the sound works.
Expected Results:
The block element should be layered (with opacity) over the visible Flash object.
Comment 1•20 years ago
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*** This bug has been marked as a duplicate of 309790 ***
Status: UNCONFIRMED → RESOLVED
Closed: 20 years ago
Resolution: --- → DUPLICATE
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Description
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