function upload_from_ck(){

        $config['upload_path'] = 'uploads/';
        $config['allowed_types'] = 'gif|jpg|png';
        $config['max_size'] = '1000';
        $config['encrypt_name'] = TRUE;
        $this->load->library('upload',$config);

        if(! $this->upload->do_upload("upload"))
        {
            echo $this->upload->display_errors();
            echo "<script>alert('업로드에 실패 했습니다. ".$this->upload->display_errors('','')."')</script>";
        }
        else
        {
            $CKEditorFuncNum = $this->input->get();
            $data = $this->upload->data();
            $filename = $data['file_name'];
            $url = 'uploads/'.$filename;
            echo "<script>window.parent.CKEDITOR.tools.callFunction('".$CKEditorFuncNum."', '".$url."', '전송에 성공 했습니다')</script>";
        }
    }