$org field value don't save into database? JQuery

Hi guys,

These are my codes below,
index.php


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Submit form using Jquery to MySQL with PHP</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<script src="jquery-1.4.2.js" type="text/javascript"></script>
<script src="jquery.js" type="text/javascript"></script>
</head>

<body>
   <div class="container">  
	<form id="submit" method="post">  
    <fieldset>  
    <legend>Enter Information</legend>  
      <label for="fname">Client First Name:</label>  
				<input id="fname" class="text" name="fname" size="20" type="text">  <br>
      
      <label for="lname">Client Last Name:</label>  
				<input id="lname" class="text" name="lname" size="20" type="text">  <br>

      <label for="org">Organization:</label>  
				<input id="org" class="text" name="org" size="20" type="text">  
				
    <button class="button positive">Add Client </button>  
    </fieldset>  
  </form>  
   <div class="success" style="display: none;">Client has been added.</div>  
  </div>  

</body>
</html>

jquery.js


    $(document).ready(function(){  

        $("form#submit").submit(function() {  

        // we want to store the values from the form input box, then send via ajax below  

        var fname     = $('#fname').attr('value');  
        var lname     = $('#lname').attr('value');  
        var org		    = $('#org').attr('value');  				

            $.ajax({  
                type: "POST",  
                url: "ajax.php",  
                data: "fname="+ fname +"& lname="+ lname +"& org="+ org,  
               success: function(){  
                   $('form#submit').hide(function(){$('div.success').fadeIn();});  
               }  
           });  
       return false;  
       });  

   });  

ajax.php


<?php  
    
    include ("config.php");  
     
    // CLIENT INFORMATION  
    $fname        = htmlspecialchars(trim($_POST['fname']));  
    $lname        = htmlspecialchars(trim($_POST['lname']));  
		$org	        = htmlspecialchars(trim($_POST['org']));  
     
    $addClient  = "INSERT INTO clients (fname,lname,org) VALUES ('$fname','$lname','$org')";  
    mysql_query($addClient) or die(mysql_error());  
     
?>  

The problem is when I submit the form the $org field of the form don’t save
into the database?

Where did I made wrong?

Thanks in advanced.