设置fckeditor为只读

//设置fckeditor为只读
function FCKeditor_OnComplete(editorInstance)
    {
        editorInstance.EditorDocument.body.disabled = true;
        editorInstance.EditorWindow.parent.document.getElementById          ('xExpanded').style.display = 'none';
        editorInstance.EditorWindow.parent.document.getElementById('xCollapsed').style.display = 'none';
        editorInstance.EditorWindow.blur();
    }