This may cause toolbar plugin not work properly.

[WulfricLee]

I tried these 3 situations:

• Just jquery.js

<script type="text/javascript" src="js/jquery-2.1.3.js"></script>
<!-- <script type="text/javascript" src="js/impress-audio.js"></script> -->

Toolbar working good.

• Just impress-audio.js

<!-- <script type="text/javascript" src="js/jquery-2.1.3.js"></script> -->
<script type="text/javascript" src="js/impress-audio.js"></script>

Toolbar working good too.

• But when they come together

<script type="text/javascript" src="js/jquery-2.1.3.js"></script>
<script type="text/javascript" src="js/impress-audio.js"></script>

Toolbar lost it's jump step function, it just didn't jump anymore whichever step I indicated.