<div>
<button type="button" class="btn btn-info" id="s_button"
       window.open('{% url 'online_sc' %}', '_blank');>
</div>

<div>
<button type="button" class="btn btn-info" id="s_button"
       onclick="window.open('{% url 'online_air_schedule' %}', '_blank')"
</div>