function grid_onload_sub(ids)
    {
        if(ids.rows)
        {
            jQuery.each(ids.rows,function(i)
            {
                // if clientId between 1 & 5, format cell. see 'aria-describedby=list1_client_id' is 'gridid_colname' convention to identify cell.
                if (parseInt(this.already_invoiced) + parseInt(this.quantity) > parseInt(this.received_quantity))
                {
                  alert(this.already_invoiced);
                    // highlight cell
                    jQuery('#edit_line_invoice tr.jqgrow:eq('+i+')').css('background-image','inherit');
                    jQuery('#edit_line_invoice tr.jqgrow:eq('+i+') td[aria-describedby=edit_line_invoice_quantity]').css('background','inherit').css({'background-color':'silver', 'color':'black'}); //red

                }
            });
        }
    }