Vertical scroll bar doesn't work properly.

I use the CKeditor for large documents editing (about standard 20-35 pages).

Text content are loaded to the textarea and then with this javascript:

    <script type="text/javascript" language="javascript">

        var editor;

        $(document).ready(function() {

            editor = CKEDITOR.replace('textAreaID');
            editor.config.height = $('body').height() - 130;
        });

        $(window).resize(function() {
            editor.config.height = $('body').height() - 130;
            editor.resize(editor.config.width, editor.config.height, true, false);
        });
        
    </script>

it is wrapped with CKeditor.

Everything works good, but vertical scroll arrow buttons in the editor doesn't work! It doesn't scroll the page. Additionally, clicking on the any area of vertical scroll doesn't move the content too.

Any helps? Is it a bug? Do you know about such problem?