Problems with Guestbook

Hello,
i set up a site with Joomla 3.2.3.
For the template i use the latest version of T3 Framework...
And the latest version of VitaBook...
This ist the adress of the site:
www.kuttruff.net/index.php/vitabook

Now to my problem:
When i press the send button in vitabook nothing happens :-(
With the Standard template from Joomla it is working...

Can somebody help me with this problem?

Best regards
Eric