$( document ).ready(function () {

    var clone = (function () {
            var cloneIndex = 0;
            var template = $('#categoryTemplate').text();

            return function () {
                return template.replace(/ID/g, ++cloneIndex);
            }

    })();


    //Start off with 1 category.
    categories.append(clone());


    $(document).on('change', 'select', function () {

            var string= '';

            $.each($('select option:selected'), function () {

               string += $(this).val();

            });

            document.getElementById("MainContent_Label1").innerHTML = string;
    });


    $(document).on("click", 'button.add', function () {

                categories.append(clone());

     });
});