[TYPO3-core] RFC #14800: JS errors prevent JS pased popups from working in IE

[JoH asenau]

This is an SVN patch request.

Type: Bugfix

Bugtracker references:
http://bugs.typo3.org/view.php?id=14800

Branches:
TYPO3_4-3 & trunk

Problem:
There are some wizards that used to open in a real popup window which are opened as a layer via JS now to avoid the popup. (.i.e. the RTE link wizard)
While opening there will be a JS error like "this.west.el is null or not an object" which results in a blocked wizard.

Solution:
Move the check from this.west (and others) to this.west.el level before anything will be applied to the elements.

After applying the patch the wizards do work even in IE6 WinXP.

Cheers

Joey

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