hyperion.ng/assets/webconfig/content/login.html

<div class="container" style="margin:20px auto;max-width:500px;">
  <center>
    <div>
      <div class="panel panel-danger">
        <div class="panel-heading panel-system">
          <h3 class="panel-title">Login</h3>
        </div>
        <div class="panel-body">
          <form>
            <div class="form-group">
              <input name="password" class="form-control" type="password" id="password" placeholder="Password" autocomplete="off" />
              <input name="show_pw" type="checkbox" id="show_pw" /><label for="show_pw">Show/Hide Password</label>
            </div>
            <div class="form-group">
              <button type="submit" class="btn btn-sm btn-success" id="btn_password" onclick="requestAuthorization(document.getElementById('password').value); return false;" disabled><i class="fa fa-fw fa-unlock"></i>Login</button>
            </div>
          </form>
        </div>
      </div>
    </div>
  </center>
</div>

<script>
  removeOverlay();

  $('#password').off().on('input', function (e) {
    if (e.currentTarget.value.length >= 8)
      $('#btn_password').removeAttr('disabled');
  });

  $('#show_pw').off().on('change', function (e) {
    (e.currentTarget.checked ? $('#password').attr('type', 'text') : $('#password').attr('type', 'password'))
  });
</script>