我用的是Ext3.20,在htm页中同时引用文件aa.js、bb.js文件，在IE6,IE7浏览htm页，关闭带有图型的Tab页，IE会报错。

但是，只引用cc.js文件，在ＩＥ下浏览就不会报错，两种写法效果是一样的。

可是把LineChart对象render到DIV时ＩＥ就报错。

我现在的办法是在关闭带有图型的tab页时，隐藏它。

不知道，各位解决我遇到的这个问题有没有更好的办法？？

aa.js 文件内容如下：
Ext.onReady(function() {
    var mytabpanel = new Ext.TabPanel({
        title: 'mytab',
        id: 'tabmal',
        enableTabScroll: true,
        width: 586,
        height: 368,
        activeTab: 0,
        items: [{
            title: 'index',
            id: 'indextab',
            html: '<div id="index"></div>'
}]
        });
        var mywin = new Ext.Window({
            title: 'mywin',
            width: 600,
            height: 400,
            items: mytabpanel
        });
        var tabs = Ext.getCmp('tabmal');
        for (var x = 0; x < 1; x++) {
            var ctab = tabs.add({
                id: 'add' + x,
                title: 'add' + x,
                closable: true,
                //items: cp
                html: '<div id="add1' + x + '"></div>'
            }).show();
            tabs.setActiveTab(ctab);
        }
        mywin.show();
    });

bb.js文件内容如下:

Ext.onReady(function() {
    var store = new Ext.data.JsonStore({
        fields: ['name', 'visits', 'views'],
        data: [
            { name: 'Jul 07', visits: 245000, views: 3000000 },
            { name: 'Aug 07', visits: 240000, views: 3500000 },
            { name: 'Sep 07', visits: 355000, views: 4000000 },
            { name: 'Oct 07', visits: 375000, views: 4200000 },
            { name: 'Nov 07', visits: 490000, views: 4500000 },
            { name: 'Dec 07', visits: 495000, views: 5800000 },
            { name: 'Jan 08', visits: 520000, views: 6000000 },
            { name: 'Feb 08', visits: 620000, views: 7500000 }
        ]
    });

        var cp = new Ext.chart.LineChart({
            store: store,
            //renderTo: 'add0',
            xField: 'name',
            yField: 'visits',
            listeners: {
                itemclick: function(o) {
                    var rec = store.getAt(o.index);
                    Ext.example.msg('Item Selected', 'You chose {0}.', rec.get('name'));
                }
            }
        });
        cp.render('add10');
    });

cc.js文件内容如下:

Ext.onReady(function() {
    var store = new Ext.data.JsonStore({
        fields: ['name', 'visits', 'views'],
        data: [
            { name: 'Jul 07', visits: 245000, views: 3000000 },
            { name: 'Aug 07', visits: 240000, views: 3500000 },
            { name: 'Sep 07', visits: 355000, views: 4000000 },
            { name: 'Oct 07', visits: 375000, views: 4200000 },
            { name: 'Nov 07', visits: 490000, views: 4500000 },
            { name: 'Dec 07', visits: 495000, views: 5800000 },
            { name: 'Jan 08', visits: 520000, views: 6000000 },
            { name: 'Feb 08', visits: 620000, views: 7500000 }
        ]
    });

    var cp = new Ext.chart.LineChart({
        store: store,
        xField: 'name',
        yField: 'visits',
        listeners: {
            itemclick: function(o) {
                var rec = store.getAt(o.index);
                Ext.example.msg('Item Selected', 'You chose {0}.', rec.get('name'));
            }
        }
    });
    var mytabpanel = new Ext.TabPanel({
        title: 'mytab',
        id: 'tabmal',
        enableTabScroll: true,
        width: 586,
        height: 368,
        activeTab: 0,
        items: [{
            title: 'index',
            id: 'indextab',
            html: '<div id="index"></div>'
}]
        });
        var mywin = new Ext.Window({
            title: 'mywin',
            width: 600,
            height: 400,
            items: mytabpanel
        });
        var tabs = Ext.getCmp('tabmal');
        for (var x = 0; x < 1; x++) {
            var mm = tabs.add({
                id: 'add' + x,
                title: 'add' + x,
                closable: true,
                items: cp
            }).show();
            tabs.setActiveTab(mm);
        }
        mywin.show();
    });