CKEditor disapears on production server

Hi,
I've got strange problem (probably something simple) with my cms built with CKEditor.
After uploading files to production server, CKEditor window stopped showing up.

I checked paths to ckeditor.js - it's OK.
I am using basic configuration with my own scripts to upload and browse files.

<script type="text/javascript">
            CKEDITOR.replace( 'content',
             {
                 filebrowserBrowseUrl : 'http://path/filemanager/browse.php',
                 filebrowserUploadUrl : 'http://path/filemanager/upload.php'
             });
         </script>