// define handler function for 'afterSubmit' event.
    var deleteMessage = function(response,postdata){
        var json   = response.responseText; // response text is returned from server.
        var result = JSON.parse(json); // convert json object into javascript object.
        
        return [result.status,result.message,null];
    }

    $('#tab3-grid').jqGrid('navGrid', '#tab3-pager',
        {view:true, closeOnEscape:true}, // general parameters.
        {}, // edit options.
        {}, // add options.
        {afterSubmit: deleteMessage}, // del options.
        {}, // search options.
        {}  // view options.
    );

<? php

    $rows = mysql_affected_rows();

    // if record deleted or not, send user a status message.
    if($rows == 1) {
        // send status message and response to jqgrid.
        $message = 'Workorder record '.$postConfig['rowID'].' deleted';
        $output['status']  = true;
        $output['message'] = $message;
    }else{
        // send status message and response to jqgrid.
        $message = 'Workorder record '.$postConfig['rowID'].' not deleted';
        $output['status']  = false;
        $output['message'] = $message;

    }

    // encode to json format and send output back to jqGrid table.
    echo json_encode($output);

?>