Sort a mysql table using php,ajax and jquery

Hello Everyone Ok here is the deal i am building a messaging system by php,ajax,jquery and mysql i add the new message and i add in 2 rows now what i want to do is to send an ajax request to server and recieve an updated version of the table but sorted So how can i do so

//here i add and call the message the message

function addMsg()
 {
      //alert(post);
  $.get("db.php",$('form').serialize(),
     function(data){
   getMsg(data);},"html");
}

function getMsg(data) { alert(data); $("#t1").append(data); } //php

 $sql="INSERT INTO -----

mysql_query($sql) or die(mysql_error()); 


$result = mysql_query("SELECT ----");

    while($row = mysql_fetch_assoc($result))
   {     
   echo "<tbody><tr><td>".""."</td><td>".$row["col"]."</td><td>".$row["col"]."</td><td></td><td></td><tr><td></td><td colspan='4'>".$row["col"]."</td></tr></tbody>"; 
   }

?>

//Now for sorting //javascript

function sort()
 {
  $.ajax({
    url: "sort.php",
    dataType: "text",
    success: function(data){
    $("t1").text(data);
        }

  });

 }

//php

$result = mysql_query("SELECT * FROM table ORDER BY col desc");

   while($row = mysql_fetch_array($result))
        {  
     echo "<tbody><tr><td>"."&#8226;"."</td><td>".$row["col"]."</td><td>".$row["col"]."</td><td></td><td></td><tr><td></td><td colspan='4'>".$row["col"]."</td></tr></tbody>"; 
     }

?>

From stackoverflow

• Use ORDER BY when you do the SELECT. Check this: http://dev.mysql.com/doc/refman/5.0/en/sorting-rows.html

• Ok here is all i can do but still doesn't work any ideas Come on gurus i need help

  //index.php

  From

  //ajax.js

  function sort(orderByType)
   {
    $.ajax({
      url: "sort.php",
      type:"get",
      data: "orderby="+orderByType,
      success:function(data){
     alert(data);
      $("t1").text(data);}
    });
  
   }
  

  //sort.php

  $con = mysql_connect("localhost","root","root");
  if (!$con) {
   die('Could not connect: ' . mysql_error());
  }
  

  $orderBy = $_GET['orderby'];

  mysql_select_db("icrisis", $con);
  
  $result = mysql_query("SELECT * FROM messages,user  
           where user_id = from_user
           ORDER BY user_name".$orderBy);
  
  
   while($row = mysql_fetch_array($result))
     {  
    echo "<tbody><tr><td>"."&#8226;"."</td><td>".$row["Time_Date"]."</td><td>".$row["player_name"]."</td><td></td><td></td><tr><td></td><td colspan='4'>".$row["msg_desc"]."</td></tr></tbody>";
       }
  
  
  mysql_close($con);
  

  ?>

  It doesn't see the $orderBy And then i want to add the new order to my page how could that be done