jQuery: Filtering arrays

The jQuery Code START
    
    <script type="text/javascript" src="./jquery-1.5.1.js"></script>
    <script src="http://code.jquery.com/jquery-latest.js"></script>
  
    <script type="text/javascript">
      $(document).ready(function() {
    
        var array = [1, 2, 3, 4, 5, 6, 7, 8];
        $("#div1").text("Original array: " + array.join(", "));

        array = $.grep(array, function(n, i) {
          return (i > 4);
        });
        
        $("#div2").text("Filtered i > 4: " + array.join(", "));

        array = $.grep(array, function (n) {
          return n != 7;
        });
        $("#div3").text("Filtered n != 7: " + array.join(", "));
      });
    </script>
  </head>

  <body>
   <h1>jQuery: Filtering arrays</h1>
    <div id="div1"></div>
    <div id="div2"></div>
    <div id="div3"></div>
    
  </body>
</html>