diff --git a/js/gratipay/homepage.js b/js/gratipay/homepage.js
index 9212bcdd31..d07ca9be7e 100644
--- a/js/gratipay/homepage.js
+++ b/js/gratipay/homepage.js
@@ -2,9 +2,16 @@ Gratipay.homepage = {}
 
 Gratipay.homepage.initForm = function(clientAuthorization) {
     $form = $('#homepage #content form');
+
     $submit= $form.find('button[type=submit]');
     $submit.click(Gratipay.homepage.submitForm);
 
+    $chooseEcosystem = $form.find('.ecosystem-chooser button');
+    $chooseEcosystem.click(function(e) {
+        e.preventDefault();
+        Gratipay.notification('Not implemented.', 'error');
+    });
+
     $promote = $form.find('.promotion-gate button');
     $promote.click(Gratipay.homepage.openPromote);
 
diff --git a/www/index.spt b/www/index.spt
index 40a2a2281a..0892c7d616 100644
--- a/www/index.spt
+++ b/www/index.spt
@@ -115,10 +115,10 @@ $(document).ready(function() {
             {{ _('Which do you value most?{br}(JavaScript, Python, etc.)', br='<br>'|safe) }}
         </p>
 
-        <div class="important-button">
+        <div class="important-button ecosystem-chooser">
             <button class="large">{{ _('Choose an Ecosystem') }}</button>
         </div>
-        <div class="preferences"></div>
+        <div class="ecosystems"></div>
 
 
         <h2>{{ _('Promotion') }}</h2>