<div id="overdrive-checkout" class="modal" tabindex="-1" role="dialog" aria-labelledby="overdrive-checkout-label" aria-hidden="true">

<div class="modal" id="overdrive-checkout" tabindex="-1" aria-labelledby="overdrive-checkoutLabel" aria-hidden="true">

    <div class="modal-header">

    <div class="modal-dialog">

        <button type="button" class="closebtn" data-dismiss="modal" aria-hidden="true">×</button>

        <div class="modal-content">

        <h3 id="overdrive-checkout-label">Checkout</h3>

            <div class="modal-header">

    </div>

                <h5 class="modal-title" id="overdrive-checkoutLabel">Select a download format</h5>

    <form action="#" method="post" id="overdrive-checkout-form">

                <button type="button" class="close" data-dismiss="modal" aria-label="Close">

        <div class="modal-body">

                    <span aria-hidden="true">&times;</span>

                <input type="hidden" name="id" value="" />

                </button>

                <fieldset class="brief">

            </div>

                    <label for="format">Format:</label>

            <form action="#" method="post" id="overdrive-checkout-form">

                    <ul class="overdrive-format-list">

                <div class="modal-body">

                </fieldset>

                    <input type="hidden" name="id" value="" />

        </div>

                    <div id="overdrive-format-list">

        <div class="modal-footer">

                    </div>

            <input type="submit" class="btn btn-primary overdrive-checkout-submit" value="Checkout" />

                </div>

            <a href="#" data-dismiss="modal" aria-hidden="true" class="cancel">Cancel</a>

                <div class="modal-footer">

        </div>

                    <button type="submit" class="btn btn-primary overdrive-checkout-submit">Save changes</button>

    </form> <!-- /#overdrive-checkout-form -->

                    <button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button>

</div>  <!-- /#overdrive-checkout  -->

                </div>

            </form> <!-- /#overdrive-checkout-form -->

        </div> <!-- /.modal-content -->

    </div> <!-- /.modal-dialog -->

</div> <!-- /.modal -->

        var checkout_format_list = checkout_popup.find("ul.overdrive-format-list").empty();

        var checkout_format_list = checkout_popup.find("#overdrive-format-list").empty();

            var li = $('<li>').appendTo(checkout_format_list);

            var line = $("<div/>").addClass("form-check");

            $('<input name="checkout-format" type="radio">')

            var input = '<input id="' + item + '" class="form-check-input" value="' + item + '" name="checkout-format" type="radio" /> ';

                .val(item)

            var label = '<label for="' + item + '">' + item + '</label>"';

                .appendTo(li);

            $(input).appendTo( line );

            li.append(item);

            $(label).appendTo( line );

            line.appendTo( checkout_format_list );