取消网格中字段的readonly属性

$().ready(function() {       

         var indx_target;      

         $("#grdTest th").each(function(index) {

        if($(this).html().indexOf("业务日期")>0  ){

                            indx_target=index;

                   }

    });

         $('#grdTest tr').find("td:eq("+indx_target+")").each(function(){

                   $(this).removeAttr("readonly");              

                            return false;             

     });

});