#11 horizontal submenu disappears on IE

[Greg Rundlett]

Using version 3.2.0-rc of phplayersmenu, and Microsoft
Internet Exploder version 6.0.2800, the sub-menus of
horizontal menus disappear immediately on mouseover,
apparently only at smaller window dimensions, only after
the page is fully loaded.

This bug can not be reproduced using Mozilla on Linux,
nor Mozilla on Windows. (surprise, it only affects
Windows IE)

To reproduce this bug:
1. visit http://phplayersmenu.sourceforge.net/
2. Adjust browser window so that it is at least 700px
wide. (At this width, the entire horizontal menu is
available without a horizontal scrollbar in IE)
3. Mouse over the menu item labelled 'Project Page on
SF.net', and move the mouse over the sub-menus.
(Notice how they cascade from left to right, and remain
visible as long as the mouse is positioned over any sub-
menu item.)
4. Now resize the browser window so that it is only
500px wide. (At this width, the right scrollbar is
immediately adjacent to the menu item labelled 'Project
Page on SF.net')
5. Repeat step 3. The sub-menus will cascade to the
left in order to appear on the visible screen 'canvas'.
Notice how the sub-menus appear while the mouse is
over the main menu, but immediately disappear when
you move the mouse to hover over the sub-menus.
6. IMPORTANT: At any window size, the sub-menus
WILL work as expected until all images are downloaded
for the page. Once the menu images are fully
downloaded (and presumably at the point that the script
loaded = 1 is evaluated?), the bug will begin to manifest
itself.
7. Repeat step 2 and 3 without reloading the page, and
the sub-menus work again.

[Greg Rundlett]

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I tried to use a plain menu.txt file (no menuicons), but the
same bug pattern emerges.

[DCohen]

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major bug and should have its priority increased.

[DCohen]

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Just realized the same bug exists in 3.0.2

[Marco Pratesi]

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> major bug and should have its priority increased.

Please, be calm :-)

First of all, "major bug" *of msie*, not of phplm :-P
To realize that it's (one of the countless) msie bug,
try the following:

1 - cut the DTD declaration at the beginning of index.php;
the problem disappears; it seems that it is another bug
that emerges with doctype switching (msie has tons
of bugs when it switches to "modern" behaviour, as it is
evidently not a modern browser >:-P)

2 - edit libjs/layersmenu.js commenting out the line
window.onresize = resizeHandler;
the problem disappears again; evidently, msie6 triggers
a window.onresize event even though the window has not
resized at all! I have played a bit with the code to understand
*where the hell* he thinks that the window resizes; I have
found the parts of code where this happens, but I have still
not completely identified the problem.

Anyway, here it is a(nother) workaround that seems
to work for me:

libjs/layersmenu.js
-------------------
...
if (IE5) { // Workaround needed for crappy msie6
origWidth = window.innerWidth;
origHeight = window.innerHeight;
}
function resizeHandler()
{
if (IE5) { // Workaround needed for crappy msie6
if (window.innerWidth == origWidth &&
window.innerHeight == origHeight) {
return;
} else {
origWidth = window.innerWidth;
origHeight = window.innerHeight;
}
}
...

Try this workaround and let me know if it works for you
without side effects.

Marco Pratesi

[DCohen]

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been running the workaround for a week now without problems,
Thanks Marco, sorry to be such a pain...great work!

[Erik Spaan]

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The Workaround in libjs/layersmenu.js works also fine for me.
Thanks.