EXTJS3.1.1 中文乱码

同样的代码 2.0完全没有问题 Ext.onReady(function()
{
    new Ext.Viewport({
        layout:"border",
        items:[
                {
                    region:"north",
                    height:150,
                    collapsible:true,
                    closable:true,
                    title:"北北北北北"
                },
                {
                    region:"south",
                    height:150,
                    collapsible:true,
                    title:"南南南南南"
                },
                {
                    region:"center",
                    height:150,
                    collapsible:true,
                    title:"中中中中中",
                    xtype:"tabpanel",
                    items:[
                            {
                                title:" 标签一",
                                closable:true,
                                html:"标签一的内容",
                                bbar:[
                                        {
                                            text:"底部工具栏"
                                        },
                                        {
                                            text:"按钮一"
                                        },
                                        {
                                            text:"按钮二"
                                        }
                                      ]
                            },
                            {
                                title:" 标签二",
                                closable:true,
                                html:"标签二的内容",
                                tbar:[
                                        {
                                            text:"顶部工具栏"
                                        },
                                        {
                                            text:"按钮一"
                                        },
                                        {
                                            text:"按钮二"
                                        }
                                      ]
                            },
                            {
                                title:" 标签三",
                                html:"标签三的内容"
                            }
                          ]
                },
                {
                    region:"west",
                    width:250,
                    collapsible:true,
                    title:"西西西西西",
                    layout:"accordion",
                    items:[
                            {
                                title:"子块一",
                                html:"<h1>子块一的内容</h1>"
                            },
                            {
                                title:"子块二",
                                html:"<h1>子块二的内容</h1>"
                            },
                            {
                                title:"子块三",
                                html:"<h1>子块三的内容</h1>"
                            }
                          ]
                },
                {
                    region:"east",
                    width:250,
                    collapsible:true,
                    title:"东东东东东"
                }
              ]
    });
});