how do i append the div (id="this") into table?

how do i append the div (id="this") into table?

   <script src="jquery.js"></script>
        <script>
            $(document).ready(function() {
                $("#tbl_add").click(function(){
                     $("table").append("#thi");
                });
              });
        </script>
  <table border="1">
        <tr>
            <td>Label</td>
            <td>Find By</td> 
            <td>Event</td>
            <td>Data</td>
          
        </tr>
        <div id="this"
        <tr >
           
            <td><input type="text" id="TestName1" name="TestName1"></td>
            <td><input type="text" id="TestName2" name="TestName2"></td> 
            <td><input type="text" id="TestName3" name="TestName3"></td>
            <td><input type="text" id="TestName4" name="TestName4"></td>
        </tr>
        </div>