if (ref $arg{cell_render_hook} eq 'CODE') {	
        $arg{cell_render_hook}->(
                                 $page,
                                 $row_cnt,
                                 $j,
                                 $first_row,
                                 $cur_x,
                                 $cur_y-$row_h,
                                 $calc_column_widths->[$j],
                                 $row_h
                                );	
    }