[B] Prototype.js Error

[Bodo]

I am running a script that embeds a simple php chat (Yshout5) into myBB.

PHP Code:

<script src="yshout/js/jquery.js" type="text/javascript"></script>
<script src="yshout/js/yshout.js" type="text/javascript"></script>
<link rel="stylesheet" href="yshout/example/css/light.yshout.css" />

<script type="text/javascript">
   new YShout();
</script> 


The chat runs perfectly but there is scripted text on the bottom of the page. I am assuming this is caused by prototype.js

Check it out: My Board