FCKeditor File Manger Broken in IE9

Error
“Invalid calling object fckdialog.html, line 813 character 4”.

To fix this issue with the FCKeditor, all you need to do is:

Replace the code :

FCKTools.RegisterDollarFunction=function(A){A.$=A.document.getElementById;};

With:

FCKTools.RegisterDollarFunction = function( targetWindow ) {targetWindow.$ = function( id ){ return targetWindow.document.getElementById(id);};}; 

in the fckeditor/editor/js/fckeditorcode_ie.js