Is there a way to initiate a new SparkWeb chat from javascript?

Hi, I have sparkweb working well for my instance of openfire and I can launch the initial instance of sparkweb from my site for my users using the great directions from SparkWeb HOW-TO.

So my question is, once I have a tab with sparkweb open is there any way to get SparkWeb to initiate a new chat based on a user clicking another link on my site?

Thanks for any advice