This website contains links to software which is either no longer maintained or will be supported only until the end of 2019 (CKFinder 2). For the latest documentation about current CKSource projects, including software like CKEditor 4/CKEditor 5, CKFinder 3, Cloud Services, Letters, Accessibility Checker, please visit the new documentation website.
If you look for an information about very old versions of CKEditor, FCKeditor and CKFinder check also the CKEditor forum, which was closed in 2015. If not, please head to StackOverflow for support.
The editor uses a series of "floating elements" (panels) for some of its features, like the toolbar combos, color selectors and dialogs. FloatingPanelsZIndex value should be at the top of the z-index. As you may create other floating elements with own z-index in your page, you can use this setting to properly instruct FCKeditor which z-index to use to not break things. The deafult value is 10000. Syntax:
FCKConfig.FloatingPanelsZIndex = 10000 ;