Submit button is not working

Dear stackideas,

I have a problem with the submit button on our website. (not working)
I can't figure out why this is and i really need some help with this.

Example is on this URL: http://cayentis-ontwikkel.nl/crm-expert-center/blog-supertest/305-how-to-define-scope-for-a-dynamics-crm-project

After i filled in all the fields, the submit button is not working. (another question is: where can I change the language of the Submit button, because it didn't changed when i uploaded your language pack.

I really apreciate your help.

Thanks,

Orrin van Room

Cayentis