[Plugin: Contact Form 7] Response and Error Message don't display

Hi there,

my contact form doesn’t display the error and response message.

on this page : http://www.mtbe.be/DB/?page_id=18

Contact Form 7 : Version 3.1.1
WordPress : 3.3.1

I receive the mail from the contact form, but the spinning wheel and “error / validation” message don’t display …

Any help appreciated !
Rv.

http://ww.wp.xz.cn/extend/plugins/contact-form-7/