function vw_yoga_fitness_openCity(evt, cityName) {
    var vw_yoga_fitness_i, vw_yoga_fitness_tabcontent, vw_yoga_fitness_tablinks;
    vw_yoga_fitness_tabcontent = document.getElementsByClassName("tabcontent");
    for (vw_yoga_fitness_i = 0; vw_yoga_fitness_i < vw_yoga_fitness_tabcontent.length; vw_yoga_fitness_i++) {
        vw_yoga_fitness_tabcontent[vw_yoga_fitness_i].style.display = "none";
    }
    vw_yoga_fitness_tablinks = document.getElementsByClassName("tablinks");
    for (vw_yoga_fitness_i = 0; vw_yoga_fitness_i < vw_yoga_fitness_tablinks.length; vw_yoga_fitness_i++) {
        vw_yoga_fitness_tablinks[vw_yoga_fitness_i].className = vw_yoga_fitness_tablinks[vw_yoga_fitness_i].className.replace(" active", "");
    }
    document.getElementById(cityName).style.display = "block";
    evt.currentTarget.className += " active";
}