Draggable Sortable Multiple Selected

HTML

<div class="container">
    <div>one</div>
    <div>two</div>
    <div>three</div>
    <div>four</div>
    <div>five</div>
</div>

CSS

body {
    background-color:#012;
    font-family:sans-serif;
    text-align:center;
}
div {
    margin:5px 0;
    padding:1em;
}
.container {
    width:52%;
    margin:1in auto;
    background-color:#555;
    border-radius:.5em;
    box-shadow:0 0 20px black;
}
.container div {
    background-color:#333;
    color:#aaa;
    border:1px solid #777;
    background-color:#333;
    color:#aaa;
    border-radius:.25em;
    cursor:default;
    height:1em;
}
.container div:hover {
    background-color:#383838;
    color:#ccc;
}
.selected {
    background-color:#36a !important;
    border-color:#036 !important;
    color:#fff !important;
    font-weight:bolder;
}

JavaScript

$(function () {
    $('.container').on('click', 'div', function () {
        $(this).toggleClass('selected');
    });

    $(".container").sortable({
        revert: true,
        helper: function (e, item) {
            if (!item.hasClass('selected')) item.addClass('selected');
            var elements = $('.selected').not('.ui-sortable-placeholder').clone();
            var helper = $('<div/>');
            item.siblings('.selected').addClass('hidden');
            return helper.append(elements);
        },
        start: function (e, ui) {
            var elements = ui.item.siblings('.selected.hidden').not('.ui-sortable-placeholder');
            ui.item.data('items', elements);
            var len = ui.helper.children().length;
            console.log(ui.item.height());
            var currentHeight = ui.helper.height()
            var itemHeight = ui.item.height() + 32; // 32 = 16x2 padding
            ui.helper.height(currentHeight + (len * itemHeight))
            ui.placeholder.height((len * itemHeight))
        },
        receive: function (e, ui) {
            ui.item.before(ui.item.data('items'));
        },
        stop: function (e, ui) {
            ui.item.siblings('.selected').removeClass('hidden');
            $('.selected').removeClass('selected');
        }
    });

});