转帖01

{
            region: 'west',
            collapsible: true,
            title: '导航菜单',
            xtype: 'treepanel',
            200,
            autoScroll: true,
            split: true,
            loader: new Ext.tree.TreeLoader({dataUrl:'tree.aspx'}),
            root: {
                nodeType: 'async',
                text : 'root',
                draggable : false,
                id : '0'
            },
            rootVisible : false,
            listeners: {
                 'click':function(node, event) {   
                 event.stopEvent();   
                 var n = Ext.getCmp('tab').getComponent(node.id);   
                 if (!n&&node.attributes.href!=null) {
                    n = Ext.getCmp('tab').add({
                       'id':node.id,
                       'title':node.text,
                       closable:true,
                       autoLoad:{url:node.attributes.href, scripts:true}
                    });   
                 }   
                 Ext.getCmp('tab').setActiveTab(n);
              }   
            }
        }