extjs实现左侧tab

layout=newExt.BorderLayout(document.body,...{

center:...{
titlebar:false,
tabPosition:'left'
}

});

layout.beginUpdate();

variframe=Ext.DomHelper.append(document.body,
...{tag:'iframe',frameBorder:0,src:'BusiLineView.html'});

layout.add('center',newExt.ContentPanel(iframe,...{title:'公司',fitToFrame:true,closable:false}));
layout.add('center',newExt.ContentPanel('panel-bk',...{title:'板块',closable:false}));
layout.add('center',newExt.ContentPanel('panel-fund',...{title:'基金',closable:false}));
layout.getRegion('center').showPanel(0);
layout.endUpdate();