关闭流程窗口

function closePopWin(){                                 
       top.refreshD();
     var a =top.window.Ext.getCmp('jSubWin_inst');
     if (a) {a.close();a= null}
     var b = top.window.Ext.getCmp('jSubWin_tran');
     if(b){b.close();b =null}
}