Ext新建子窗体

function showpic(pno,index){
		var win = new Ext.Window({
            title: '模型对比图',
            closable:true,//是否关闭按钮
            width:500,
            height:360,
            id:'addwin',
            //border:false,
            plain:true,
            //layout: 'border',//窗体布局方式
            items: [{
					xtype:'box',
					autoEl:{
						width:500,
						height:360,
						tag:'iframe',
						src:'modelcompare.action?pno='+pno+'&indexModel='+index
					}
				}]
        });
        win.show();
	}