Index: /MediaWiki/trunk/extensions/FCKeditor/FCKeditor.body.php
===================================================================
--- /MediaWiki/trunk/extensions/FCKeditor/FCKeditor.body.php	(revision 550)
+++ /MediaWiki/trunk/extensions/FCKeditor/FCKeditor.body.php	(revision 551)
@@ -307,4 +307,13 @@
         $script .= <<<HEREDOC
 <script type="text/javascript"> 
+
+// Remove the mwSetupToolbar onload hook to avoid a JavaScript error with FF.
+if ( window.removeEventListener )
+	window.removeEventListener( 'load', mwSetupToolbar, false ) ;
+else if ( window.detachEvent )
+	window.detachEvent( 'onload', mwSetupToolbar ) ;
+	
+mwSetupToolbar = function() { return false ; } ;
+
 function onLoadFCKeditor()
 {