[jQuery] AutoComplete

[jQuery] AutoComplete

Hi Experts,
I am trying to use jQuery get function to develop an autocomplete which will display suggestion as soon as users starts typing like this;
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"<a href="http://www.w3.org/TR/html4/loose.dtd">http://www.w3.org/TR/html4/loose.dtd</a>">
<html>
    <head>
        <script src="<a href="http://code.jquery.com/jquery-latest.js">http://code.jquery.com/jquery-latest.js</a>"></script>
        <link rel="stylesheet" href="<a href="http://dev.jquery.com/view/trunk/plugins/autocomplete/demo/main.css">http://dev.jquery.com/view/trunk/plugins/autocomplete/demo/main.css</a>" type="text/css" />
        <link rel="stylesheet" href="<a href="http://dev.jquery.com/view/trunk/plugins/autocomplete/jquery.autocomplete.css">http://dev.jquery.com/view/trunk/plugins/autocomplete/jquery.autocomplete.css</a>" type="text/css" />
        <script type="text/javascript" src="<a href="http://dev.jquery.com/view/trunk/plugins/autocomplete/lib/jquery.bgiframe.min.js">http://dev.jquery.com/view/trunk/plugins/autocomplete/lib/jquery.bgiframe.min.js</a>"></script>
        <script type="text/javascript" src="<a href="http://dev.jquery.com/view/trunk/plugins/autocomplete/lib/jquery.dimensions.js">http://dev.jquery.com/view/trunk/plugins/autocomplete/lib/jquery.dimensions.js</a>"></script>
        <script type="text/javascript" src="<a href="http://dev.jquery.com/view/trunk/plugins/autocomplete/jquery.autocomplete.js">http://dev.jquery.com/view/trunk/plugins/autocomplete/jquery.autocomplete.js</a>"></script>
        <script>
            $(document).ready(function(){
                var result = $.get("test.php", { data: "q"+$("#example").attr('value') },
                function(data){
                    $("#example").html(data);
                });
                $("#example").autocomplete(result);
            });
        </script>
    </head>
    <body>
        Company name: <input id="example" />
    </body>
</html>
and my backend php script looks like this;
<?php
     $q=$_GET["q"];
      $con = mysql_connect('host', 'user', 'password');
      if (!$con)
       {
          die('Could not connect: ' . mysql_error());
      }
      mysql_select_db("database", $con);
       $sql="SELECT company_name FROM company WHERE company_name = '".$q."'";
     $result = mysql_query($sql);
         while($row = mysql_fetch_array($result))
        {
            echo $row['company_name'];
          }
mysql_close($con);
?>
Unfurtunately tthis donot work as required - i donot see any suggestion. Do anyone know what i am doing wrong here?
Pls help.