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

jQuery(document).ready(function () {
    jQuery( ".tab-sec .tablinks" ).first().addClass( "active" );
});