I followed the instructions and created a snippet <div> on the template.
Created a snippet and pasted the code into it:
<script src="// app-ab16.marketo.com/js/forms2/js/forms2.js"></script>
//Add an onSuccess handler
//get the form's jQuery element and hide it
document.getElementById('confirmform').style.visibility = 'visible';
//return false to prevent the submission handler from taking the lead to the follow up url.
<div id="confirmform" style="visibility:hidden;"><p><strong>Thank you. Our product expert will be in contact shortly!</strong></p></div>
Then edit the snippet on the landing page to refer to this snippet. http://go.adlinktech.com/DXS-GetQuote_LP_Video.html
But it doesn't work. What did I miss?