Validation doesn't working

Hello,
I am using joomla 2.5.6 and I installed on it the chronoforms.
I try to do a simple contant form with validation and the validation doesnt work on my site, it works only in the test form.
I also followed the instructions of this video: http://www.youtube.com/watch?v=IklglmjkEKg.
This is my page :
http://www.bennyservice.co.il/index.php/2013-01-13-21-17-40

TNX!

Hi Machael.zv,

There's a JavaScript error from the Stylechanger code

TypeError: container is null
http://www.bennyservice.co.il/templates/beez_20/javascript/md_stylechanger.js
Line 66

If you view the form without the template then he validation is working - though there are some rtl CSS problems on the tooltip messages :-(

Bob