gistfile1.js

 <script>
       $("tbody tr").click(function() {
           if ($(this).parents().hasClass('selected')) {
            $(this).appendTo($('.original'));
            } else {
            $(this).appendTo($('.selected'));
           }
           calculate();
       })
   
        var calculate = function () {
            var sum = $('.selected tr td:nth-child(2)').toArray().map(function (td) {
                return $(td).text();
            }).reduce(function (sum, i) {
                return sum + parseInt(i);
            }, 0);
            $('.total').text(sum);
        };
        var t = $('table');
        t.addClass('original table table-hover').wrap('<div class="column">');
        var c = $('.column');
        c.prepend('<h4>All Monsters (Click rows to select them)</h4>');
        c.after('<div class="column"><h4>Selected Monsters</h4><table class="selected table table-hover"/><h3 class="go">Total Selected MP: <span class="total"></span></h3></div>');
        calculate();
  </script>