Why my auto completion script (jquery) did not work on my website?
<script type="text/javascript" src="js/jquery-1.4.2.js"></script>
  <script type='text/javascript' src="js/autocomplete.js"></script>
  <link rel="stylesheet" type="text/css" href="css/autocomplete.css" />

  <script type="text/javascript">
      $().ready(function() {
          $("#name").autocomplete("php/autocompletion.php",{
              width: 260,
              matchContains: true,
              //mustMatch: true,
              //minChars: 0,
              //multiple: true,
              //highlight: false,
              //multipleSeparator: ",",
              selectFirst: false
          });
      });
  </script>

<?php
  $host="localhost"; // Host name
  $username="name"; // Mysql username
  $password="password"; // Mysql password
  $db_name="dbname"; // Database name

  $con = mysql_connect($host,$username,$password)   or die(mysql_error());
  mysql_select_db($db_name, $con)  or die(mysql_error());

  $q = strtolower($_GET["q"]);
  if (!$q) return;

  $sql = "SELECT DISTINCT 'name' AS 'name' FROM 'name' Where 'name' LIKE '%$q%'";
  $rsd = mysql_query($sql);
  while($rs = mysql_fetch_array($rsd)) {
      $cname = $rs['name'];
      echo "$cnamen";
  }
  ?>