31788 - Onmouseover/Onmouseout cease to function

Status: VERIFIED FIXED

(Core :: DOM: UI Events & Focus Handling, defect, P3)

Description

[Ted Ashton]

If the mouse is moved onto the picture from the sidebar or from the menu bar,
the onmouseover/onmouseout functions cease to switch the picture, though they
continue to be called (note that "First" and "Second" tradeoff in the title even
on the first mouseout event in which the "help" stays white).  The problem does
not occur every time, but happens on my machine within about 3 tries if I move
my mouse down through "Bookmarks" and "Tinderbox" and on to the picture.

Comment 1

[Ted Ashton]

Attachment: testcase

Comment 2

[Richard Zach]

ashted, you said this in bug 30578:
------
the mouseout does fire even on the first failure, I
think that in the
31788 bug, the failure is that

theObj = eval(MM_swapImage.arguments[(navigator.appName ==
'Netscape')?i:i+1])

returns null sometimes when it oughtn't.
------
In M14, appName returned "Mozilla" instead of "Netscape".  So if you are running
M14, it is probably that bad browser sniffing is at work.  It's been fixed,
though.  Can you try a recent build?

Comment 3

[Ted Ashton]

Just downloaded the latest Nightly Build--symptoms remain.

Comment 4

[Simon Lucy]

See my comment on #30578, 

Comment 5

[rogerl (gone)]

Not an engine bug.

Comment 6

[Scott A. Colcord]

Attachment: Shows onmouseout failure for a <p> element.

Comment 7

[Scott A. Colcord]

I believe this is broader than it previously seemed; any elements with both 
'onmouseover' and 'onmouseout' fail to trigger 'onmouseout' at all.  Attaching 
testcase that exhibited the problem using a late March nb1b nightly.  I've 
noticed a number of other bugs that might be caused by this (search for 
'onmouseout' in the summary).

Comment 8

[joki (gone)]

This does seem to be broken in the beta branch for some reason but works fine on 
the tip.

Comment 9

[ckritzer (gone)]

Mass update:  changing qacontact to [e-mail]

Comment 10

[Loco]

Updating QA Contact.

Comment 11

[Keyser Sose]

Works for Me
Platform: PC
OS: Windows 98
Build # 2000100508

Marking as Verified

Comment 12

[Loco]

Usual Suspect-did you verify this in a trunk or branch build?  Might want to note 
that, since it may be fixed in one and not the other...Honestly, I've been using 
commercial branch builds and have had no problem with mouseout or over.

Comment 13

[Keyser Sose]

I am using the Trunk Build...sorry for not putting that in :)