datagrid标题头粗体

        //标题头粗体
        //$("#R_datagrid .datagrid-header-row td div span").each(function (i, th) {
        //    //if (i < 8) {
        //        var val = $(th).text();
        //        $(th).html("<label style='font-weight: bolder;'>" + val + "</label>");
        //    //}
        //});