Java issues

[Cubeboy]

I followed the direction (<!--Add the following script at the bottom of the web page (before </body></html>)on how to add this javascript. but it is still not working. Can anyone help Please...

<!--Chat Box will appear here-->
<div id="MyLiveChatContainer"></div>

<!--Add the following script at the bottom of the web page (before </body></html>

<script type="text/javascript">function add_chatbox(){var hccid=21159502;var nt=document.createElement("script");nt.async=true;nt.src="https://www.mylivechat.com/chatbox.aspx?hccid="+hccid;var ct=document.getElementsByTagName("script")[0];ct.parentNode.insertBefore(nt,ct);}
add_chatbox();</script>