Bug #17507
closed
IE7: Strange behaviour with hover event of nested Tabs/IRRE-levels with relative positioned HTML elements
Added by Oliver Hader over 17 years ago.
Updated over 16 years ago.
Description
This issue is very strange. It happens only in Internet Explorer 7 (and also version 6) when there are some nested Tabs and IRRE-levels and the Drag'n'Drop sorting using script.aculo.us activated.
The minimal structure is:
[tab 1] -> [irre 1] -> [tab 2] -> [irre 2] -> [tab 3] -> [irre 3]
On moving the mouse over the second tab menu ("tab 3"), all IRRE-levels below disappear. It seems that the CSS style would have been set to "visibility: hidden".
See the attached screenshots to get an idea what I'm talking about.
1) 0006104_normal.png shows the normal situation
2) 0006104_strange_error.png show the situation when moving the mouse over the parent tab menu
IE7 Version: 7.0.5730.11
prototype Version: 1.5.0
script.aculo.us Version: 1.7.0
This problem doesn't exist when using Firefox 2!
(issue imported from #M6104)
Files
I found out, that the prototype.js method "Element.makePositioned()" is responsible for that behavior. If I disable the calls from script.aculo.us to the mentioned method, everything is fine in IE7.
<b>see</b> the attached experimental patch 0006104_experimental.patch
Unfortunatelly I don't know why this function was integrated to Drag'n'Drop in script.aculo.us. The new beta release 1.7.1-beta3 doesn't have any changes and the problem would still exist.
I found out that this also occurs if script.aculo.us Sortable isn't used at all. It can be seen, when CSS hover effects or onmouseover/onmouseout events are used that change the CSS-class of an element AND when a (DIV-)element is defined with the style 'position: relative;'.
The attached file "0006104.patch" should change this behaviour for IE6/IE7. The div-elements that get set with "position:relative" by prototype's Element.makePositioned() are defined to be "display: inline-block".
Committed to SVN:
- TYPO3_4-1 (rev. 2480)
- Trunk (rev. 2481)
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