谁用过NTKO控件?给个打开文件的简单代码

下面是JSP的代码,看看还少什么

<script language="JavaScript" type="text/javascript" >
function openDoc(filepath)
{
try
{
  TANGER_OCX_OBJ = document.all.item("TANGER_OCX");
           TANGER_OCX_OBJ.OpenLocalFile(filepath);
}
    catch(err){
alert("不能创建新对象："+ err.number +":" + err.description);
}
finally{
}
}

</script>

<object  id="TANGER_OCX_OBJ" classid="clsid:C9BC4DFF-4248-4a3c-8A49-63A7D317F404" codebase="/OfficeControl.cab#Version=2,5,1,2" width="100%" height="100%">
         <param name="BorderStyle" value="1">
         <param name="TitlebarColor" value="42768">
         <param name="TitlebarTextColor" value="0">
         <param name="Caption" value="欢迎使用！">
       </object>

</HEAD>

<BODY onload='javascript:openDoc("<%=docfile%>")'> //docfile为DOC文件的PATH --------------------编程问答--------------------

--------------------编程问答-------------------- 你的代码试过了，老是报错：不能创建新对象：undefined:undefined

补充：Java ,  Web 开发