ock page_level_script %}
<script type="text/javascript">
$(document).ready(function(){
  var slack_checkbox = document.getElementById("slack_checkbox");
  slack_checkbox.addEventListener('change', function() {
    if (this.checked) {
      document.getElementById("slack_hook_url").readOnly = false;
    }
    else{
      document.getElementById("slack_hook_url").readOnly = true;
    }
  });

  var lark_checkbox = document.getElementById("lark_checkbox");
  lark_checkbox.addEventListener('change', function() 