Update newsletter subscription to work with Tinyletter

Author: brandenbyers

_includes/footer.html

@@ -13,16 +13,16 @@
   <!--   {% endif %} -->
   <!--   {% endfor %} -->
   <!-- </ul> -->
+
   <section>
-    <script type="text/javascript">var submitted=false;</script>
-    <iframe name="hidden_iframe" id="hidden_iframe" style="display:none;" onload="if(submitted) {window.location='/thanks/mailinglist/';}"></iframe>
-    <form method="post" action="https://docs.google.com/forms/d/e/1FAIpQLSdj1dm4TxQ9BIR1N7oXohV6pnZ92KmvQGSN8VLraJbMZG7Mgw/formResponse" target="hidden_iframe" onsubmit="submitted=true;">
+    <form method="post" action="https://tinyletter.com/cKeys" method="post" target="popupwindow" onsubmit="window.open('https://tinyletter.com/cKeys', 'popupwindow', 'scrollbars=yes,width=800,height=600');return true">
       <div class="inner">
         <header>
           <h2>Join our mailing list</h2> </header>
         <div class="12u$">
           <ul class="actions">
-            <li><input type="email" name="emailAddress" id="emailAddress" value="" size="30" placeholder="Email" /></li>
+            <li><input type="email" name="email" id="tlemail" value="" size="30" placeholder="Email" /></li>
+            <input type="hidden" value="1" name="embed"/>
           </ul>
         </div>
         <div class="12u$">
@@ -33,6 +33,7 @@ <h2>Join our mailing list</h2> </header>
       </div>
     </form>
   </section>
+
   <ul class="copyright">
     <li>&copy; {% assign thisyear = site.time | date: "%Y" %}
     {{ thisyear }}