1. /zbxe/modules/editor/skins/default/editor.html 에서 아래 코드를 검색.
    <script type="text/javascript">//<![CDATA[
        var zbxe_session_name = "{session_name()}";
        var uploader_setting = { "allowed_filesize" : "{$file_config->allowed_filesize}", "allowed_filetypes" : "{$file_config->allowed_filetypes}", "allowed_filetypes_description" : "{$file_config->allowed_filetypes}" }
        <!--@if(!$editor_manual_start)-->
        editor_upload_init("{$editor_sequence}", '', "{$files_count}");
        <!--@end-->
    //]]></script>




2. </script> 바로 뒤에 아랫줄을 추가하면 됩니다.

<a class="more" onclick="this.innerHTML=(this.nextSibling.style.display=='none')?'[닫기]':'[열기]';this.nextSibling.style.display=(this.nextSibling.style.display=='none')?'block':'none';" href="javascript:void(0);" onfocus='blur()'>[닫기]</a>

3. 귀찮으신분은 첨부파일 다운로드하세요.
editor.html