The AJAX script used in the original example is no longer functional in newer browsers.
We changed over to a JQuery method which works beautifully!

First, we need to add the JS to our head tag.
<script src='https://www.google.com/recaptcha/api.js'></script>
Next, we add our form.

<form class="form-3 pics Setwidth" name="ContactForm" action="3.asp" method="post" onsubmit="xmlhttpPost('3.asp', 'ContactForm', 'Contactdiv', '<img src=\'graph/pleasewait.gif\'>'); return false;"> <label>Name</label> <input type="text" name="name" /> <div class="g-recaptcha" data-sitekey="YOUR-SITEKEY-GOES-HERE"></div> <input type="Submit" name="Submit" value="Send Message" style="width:150px;"/></div> </form><div id="Contactdiv></div>


3.asp
<% strname = request.Form("name") captcha = request.Form("g-recaptcha-response") if strname = "" then response.Write "Please provide your name" 'next, we are going to challenge the reCaptcha, to make sure that it is not blank, 'and there is NO way around this. If it is not blank, then we send them a message. elseif captcha="" then response.Write "You have not completed the <strong>reCAPTCHA</strong> Please click on the blank box, and fill in the sequence of characters. Thank You" else ' If the user has completed the reCaptcha, we send a message letting them know. response.Write "Thank you for trying out the <strong>ASP Classic / Jquery reCAPTCHA 2.0</strong> demo." end if %>