function popup(kind, body) {
  var html = '';

  html += '<div id="notification_' + String(window.notification_id) + '" class="notification is-' + kind + '">';
  html += '<button class="delete" onclick="$(\'#notification_' + String(window.notification_id) + '\').remove();"></button>';
  html += body;
  html += '<script>setTimeout(function() {$(\'#notification_' + String(window.notification_id) + '\').fadeOut(500);}, 2500);</script>';
  html += '</div>';

  $('#notifications').append(html);

  window.notification_id++;
}

$(function() {
  window.notification_id = 0;
});