JS error Context Sensitive help in popup
In TYPO3 you can edit a record using the wizard_edit.php file in a popup screen.
This is for example used as wizard in the sys_template table; field basedOn.
When hovering over a label, for the context sensitive help, you get a CSS error, telling you that top.TYPO3.LLL is undefined.
In the solution the first attempt is made on the default variable top.TYPO3.LLL. If not found, it tries to find the variable in the opener variable, which should be the reference back to the TYPO3 BE.
Solution works correctly (after fix) in my installation; TYPO3 4.5.2