change html table td value without refreshing

[yonghan]

Hi all,suppose i got two rows like this picture



I'm trying to change the modified column value to current datetime without refreshing the page when i click the update button..The first row worked,the second doesn't work..Here is my codes

views/order_home

<script type="text/javascript" src="<?php echo base_url(); ?>js/jquery.js"></script>
<script type="text/javascript" src="<?php echo base_url(); ?>js/jquery.form.js"></script>

<script type="text/javascript"> 
// wait for the DOM to be loaded 
$(document).ready(function() 
{ 
$("#msg").hide();
	$('#myform').ajaxForm(function()
	{
		var no_id=$('#no_id').val();
		
		$.post("getOrder/", { 'id' : no_id },
		function(data){
	$('#modif').html(data.modified);
	}, "json");
		
		//nampilin di div message string yg ada di dalam html()
		$("#msg").html("Berhasil update order").fadeIn(1500);
		$("#msg").fadeOut(1500);
		});
	}); 
</script> <h1><?php echo $title;?></h1>
<?php
if ($this->session->flashdata('message')){
	echo "<div class='message' name='msg' id='msg'>".$this->session->flashdata('message')."</div>";
}
echo "<div name='msg' class ='msg' id='msg'></div>";

echo "<table border='1' cellspacing='0' cellpadding='3' width='100%' id='order_home' name='order_home'>\n";
echo "<tr valign='top'>\n";
echo "<th>No Order</th>\n<th>No Cust</th><th>Tgl Pesan</th><th>Modified</th><th>Status</th><th>Update</th><th>id</th><th>Actions</th>\n";
echo "</tr>\n";
if (count($order)){
	foreach ($order as $key => $list){
		echo "<tr valign='top'>\n";
		echo "<td>".anchor("admin/order/detail/".$list['no_order'],$list['no_order'])."</td>\n";
		echo "<td>".$list['custid']."</td>\n";
		$datetime = strtotime($list['tgl_pesan']);
		$orderdate = date("d-m-y H:i ", $datetime);
		echo "<td>".$orderdate."</td>\n";
		$modifieddate = strtotime($list['modified']);
		$modified = date("d-m-y H:i ", $modifieddate);
		echo "<td id='modif' name='modif'>".$modified."</td>\n";
		$attributes = array('id' => 'myform');
		echo form_open('admin/order/edit',$attributes);
		echo "<td align='center'>".form_dropdown('status',$status,$list['status'])."</td>\n";
		$btn = array('id'=>'update','name'=>'update','value'=>'Update'); 
		$data = array('name'=>'notif','id'=>'notif');
		echo "<td align='center'>".form_checkbox($data)."<label for='update'>Notifikasi cust</label>".form_submit($btn)."</td>\n";
       	echo '<input type="hidden" id="no_id" name="no_id" value="'.$list['id'].'" />';
		echo form_close();
		echo "<td align='center'>";
		echo anchor("admin/order/edit/".$list['no_order'],img(base_url().'/images/edit.jpg'));
		echo " | ";
		echo anchor("admin/order/delete/".$list['no_order'],img(base_url().'/images/delete.jpg'));
		echo "</td>\n";
		echo "</tr>\n";
	}
}
echo "</table>";
?>

controller/order

function edit($no=0)
	{
		if ($this->input->post('no_id'))
		{
			if (isset($_REQUEST['notif']))
			{
            $this->input->post('status_order');
			$result=$this->MOrder->updateOrder();
            $this->email->from('admin@7com.cphoster.com','Admin');
            $this->email->to('yonghan79@gmail.com');
            $this->email->subject('Testing email class');
            $this->email->message('Status order '.$status);
			$this->email->send();
			//return $result;
		    $this->session->set_flashdata('message','Berhasil update order');
			redirect('admin/order/index','refresh');
			}
			else
            {
			$this->MOrder->updateOrder();
			$this->session->set_flashdata('message','Berhasil update order');
			redirect('admin/order/index','refresh');
            }
		}
		else
		{
			//$id = $this->uri->segment(4);
			$data['title'] = "Edit Order";
			$data['main'] = 'admin/order_edit';
			$data['order'] = $this->MOrder->getOrder($no);
			$data['status']=$this->MOrder->getStatus();
	        if (!count($data['order'])){
				redirect('admin/order/index','refresh');
			}
			$this->load->vars($data);
			$this->load->view('dashboard');
	}
	}
	
	//buat ambil data dari db menggunakan jquery n json
	function getOrder()
	{
	$no=trim($this->input->post('id'));
	$hasil=$this->MOrder->getOrder($no);
	$datetime = strtotime($hasil['modified']);
	$orderdate = date("d-m-y H:i ", $datetime);
	$array=array('modified'=>$orderdate);
	echo json_encode($array);			
	}

Are there anything wrong with my codes?What should i do?Thanks a lot...