php - Jquery .autocomplete not working after ajax call

Hi guys i am trying to write a title matcher, i got it working but when an ajax call is made it no longer works below is my code :

 <script type="text/javascript" src="jquery.autocomplete.js"></script>
    <link rel="stylesheet" type="text/css" href="jquery.autocomplete.css" />
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>

   $(document).ready(function() 
            {
                $(".course").autocomplete("look_me_up.php", 
                    {
                        width: 260,
                        matchContains: true,
                        mustMatch: true,
                        selectFirst: false
                    });

                $(".course").result(function(event, data, formatted)
                    {
                          $(this).next(".course_val").val(data[1]);
                    });
            });
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The text box i want to update is called from a ajax request which is made first :

<input type="text" name="course" id="text1" value="Find Title In DB" >
<input type="hidden" id="val1" >
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And the ajax request is :

function checks()
            {

            $.ajax({
                type : "POST",
                url : "get_data.php",
                data : "function="+"get_text",
                success : function(msg) 
                    {
                       $(update_me).html(msg);
                    }
                });
            }
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I assume the jquery is acting up because the its trying to update a value pulled from the ajax request? I am struggling to get it to work so any help would be appreciated.