ext 缺少对象，我用的是ext2.2.求助

<html>
<head>
<title>excelpanel</title>
<meta http-equiv="Content-Type" content="text/html; charset="gb2312">
<link rel="stylesheet" type="text/css" href="../jsCommon/ext/resources/css/ext-all.css" />
<link rel="stylesheet" type="text/css" href="../excelCommon/ExcelPanel.css">
  <script type="text/javascript" src="../jsCommon/ext/adapter/ext/ext-base.js"></script>
  <script type="text/javascript" src="../jsCommon/ext/ext-all.js"></script>
 
<script type="text/javascript" src="ExcelPanel.js"></script>
<script type="text/javascript">

function getPath()
{
 var htmlpath = window.location.href;
   var dirpath = htmlpath;
   if(htmlpath.substring(0,8) == "file:///") dirpath = dirpath.substring(8);
   dirpath  = dirpath.substring(0,dirpath.lastIndexOf("/"));
   dirpath = dirpath.split("/").join("\\");
   
   return dirpath + "\\";
}

var disableBtns = ["savecopy","print","preview","zoomin","zoomout","test"];

Ext.onReady(function(){          var p = new Ext.ux.ExcelPanel({
       
        //xls : getPath()+"excelpanel.xls",
        title:'Ext.ux.ExcelPanel Extension by kimmking',
        height:700,
        width:1200,
        //titleCollapse : true,
        //collapsible : true,
        //draggable : true,
        tbar : [
{
id : 'open',
iconCls : 'open',
text : '打开',
tooltip : '打开',
handler : function(btn)
{
p.open(getPath()+"excelpanel.xls");


Ext.each(disableBtns,function(item){
Ext.getCmp(item).enable();
});
}
}

]
        
      });
      
      p.render(document.body);  
  });

</script>
<title id="page-title">Ext.ux.ExcelPanel Extension by kimmking</title>
</head>
<body>
</body>
</html>Js代码Ext.ux.ExcelPanel = Ext.extend(Ext.Panel, 
{ dso : null
,store : null
,xls : null
,zoom : 100
,available : false


    , html : "<object classid='clsid:00460182-9E5E-11d5-B7C8-B8269041DD57' id='dso' CODEBASE='cab/dsoframer.cab#version=2,0,0,0'>"
+ "<PARAM NAME='_ExtentX' VALUE='16960'> "
+ "<PARAM NAME='_ExtentY' VALUE='13600'> "
+ "<PARAM NAME='BorderColor' VALUE='-2147483632'> "
+ "<PARAM NAME='BackColor' VALUE='-2147483643'> "
+ "<PARAM NAME='ForeColor' VALUE='-2147483640'> "
+ "<PARAM NAME='TitlebarColor' VALUE='-2147483635'> "
+ "<PARAM NAME='TitlebarTextColor' VALUE='-2147483634'> "
+ "<PARAM NAME='BorderStyle' VALUE='0'> "
+ "<PARAM NAME='Titlebar' VALUE='0'> "
+ "<PARAM NAME='Toolbars' VALUE='0'> "
+ "<PARAM NAME='Menubar' VALUE='0'>" + "</OBJECT>"
 debugger:
, initComponent : function(){
        Ext.ux.ExcelPanel.superclass.initComponent.call(this);
        this.addEvents( 
            'afterrender'
        );
    }
    ,afterRender : function(){
        Ext.ux.ExcelPanel.superclass.afterRender.call(this); // do sizing calcs last if(typeof(dso) == 'undefined')
this.dso = document.getElementById("dso");
else
this.dso = dso;

        if(!dso)
        {
alert( "加载DsoFramer出错，请先注册组件.");
}else
{
dso.width = this.getInnerWidth();
dso.height = this.getInnerHeight();

this.on("resize",function(ep){
dso.width = ep.getInnerWidth();
dso.height = ep.getInnerHeight();
});
}
        this.fireEvent("afterrender", this);
        
        if(this.dso)
        {
if(this.xls)
{
this.open(this.xls);
}
}
    }
    
    ////////////
    
    ,open : function(filename)
    {
try{
this.dso.Open(filename);
this.dso.ActiveDocument.Application.CommandBars("Web").Visible = false;
this.available = true;
}catch(e)
{
alert( "打开文件出错." + "["+ this.xls +"]:" + e.description);
}
    }
    
    /////********************
    
    ,setCellValue : function(row,col,value)
    {
try{
this.dso.ActiveDocument.ActiveSheet.Cells(row,col) = value;
}catch(e)
{
alert( "Excel赋值出错." + "["+ row +"," +col +"]=" + value+ "\r\n" +e.description);
}
    }
    
    ,getCellValue : function(row,col)
    {
try{
return this.dso.ActiveDocument.ActiveSheet.Cells(row,col).Value;
}catch(e)
{
alert( "Excel取值出错." + "["+ row +"," +col +"]" +e.description);
}
    }
    
    /*************************************************
from GridView
    *************************************************/
    
    // private
    ,
    initData : function(ds, cm){
        if(this.ds){
            this.ds.un("load", this.onLoad, this);
            this.ds.un("datachanged", this.onDataChange, this);
            this.ds.un("add", this.onAdd, this);
            this.ds.un("remove", this.onRemove, this);
            this.ds.un("update", this.onUpdate, this);
            this.ds.un("clear", this.onClear, this);
        }
        if(ds){
            ds.on("load", this.onLoad, this);
            ds.on("datachanged", this.onDataChange, this);
            ds.on("add", this.onAdd, this);
            ds.on("remove", this.onRemove, this);
            ds.on("update", this.onUpdate, this);
            ds.on("clear", this.onClear, this);
        }
        this.ds = ds;//        if(this.cm){
//            this.cm.un("configchange", this.onColConfigChange, this);
//            this.cm.un("widthchange", this.onColWidthChange, this);
//            this.cm.un("headerchange", this.onHeaderChange, this);
//            this.cm.un("hiddenchange", this.onHiddenChange, this);
//            this.cm.un("columnmoved", this.onColumnMove, this);
//            this.cm.un("columnlockchange", this.onColumnLock, this);
//        }
//        if(cm){
//            cm.on("configchange", this.onColConfigChange, this);
//            cm.on("widthchange", this.onColWidthChange, this);
//            cm.on("headerchange", this.onHeaderChange, this);
//            cm.on("hiddenchange", this.onHiddenChange, this);
//            cm.on("columnmoved", this.onColumnMove, this);
//            cm.on("columnlockchange", this.onColumnLock, this);
//        }
        this.cm = cm;
    },    // private
    onDataChange : function(){
        this.refresh();
        //this.updateHeaderSortState();
    },    // private
    onClear : function(){
        this.refresh();
    },    // private
    onUpdate : function(ds, record){
        this.refreshRow(record);
    },    // private
    onAdd : function(ds, records, index){
        this.insertRows(ds, index, index + (records.length-1));
    },    // private
    onRemove : function(ds, record, index, isUpdate){
//        if(isUpdate !== true){
//            this.fireEvent("beforerowremoved", this, index, record);
//        }
//        this.removeRow(index);
//        if(isUpdate !== true){
//            this.processRows(index);
//            this.applyEmptyText();
//            this.fireEvent("rowremoved", this, index, record);
//        }
    },    // private
    onLoad : function(){
        //this.scrollToTop();
        
    },//    // private
//    onColWidthChange : function(cm, col, width){
//        this.updateColumnWidth(col, width);
//    },//    // private
//    onHeaderChange : function(cm, col, text){
//        this.updateHeaders();
//    },//    // private
//    onHiddenChange : function(cm, col, hidden){
//        this.updateColumnHidden(col, hidden);
//    },//    // private
//    onColumnMove : function(cm, oldIndex, newIndex){
//        this.indexMap = null;
//        var s = this.getScrollState();
//        this.refresh(true);
//        this.restoreScroll(s);
//        this.afterMove(newIndex);
//    },//    // private
//    onColConfigChange : function(){
//        delete this.lastViewWidth;
//        this.indexMap = null;
//        this.refresh(true);
//    }
refresh : function()
{

},

refreshRow : function(r)
{

}, 

insertRows : function(ds, index, end){

}});
一直在红色的地方报对少对象的错误，请指教，谢谢