Unable to submit a form

My form will not submit. It doesn't even get to 'please wait.' Just nothing happens. I tried embedding in iframe but that didn't work either.

Embed link is: http://form.jotform.us/form/51707083597160

Thank you for contacting us.

I was able to submit your form using direct form link.

If the issue is related to the embedded form, please provide us with a link to the web page in question.