GridPanel行中图片垂直居中的方法
new Ext.grid.Column({header: "品牌图标",dataIndex:'',align:'center',width:100,renderer:function(value, metaData, record){ return "<img src='BinaryServlet?action=get_brand&brand_id="+record.get('BRAND_ID')+"&ts="+new Date().toString()+"' width='90px' height='36px'/>"; }}),