If you load your site and view the javascript console in your browser you’ll see all the errors triggered by your theme javascript.
These errors are occurring before the calendar javascript is able to load, effectively stopping the calendar from getting initialized.
You can either have your theme developer modify the code so that it addresses the errors and follows WordPress no-conflict best practices, or you select a different theme for your blog.
To my knowledge, there is nothing I can modify in the calendar code that would make this work for your implementation. Although I am certain open to suggestions if anyone knows different.
Eran