function toggleRadio(sender) {
    var hotel = sender.parentNode.getAttribute('data-hotel');
    var buttons = document.getElementsByTagName("input");

    for (i = 0; i < buttons.length; i++) {
        var radio = buttons[i];
        var type = radio.getAttribute("type");
        if (type === "radio" && radio.checked) {
            var btnhotel = radio.parentNode.getAttribute("data-hotel");
            if (btnhotel != hotel) {
                radio.checked = false;
            }
        }
    }
}