diff --git a/docs/_static/js/kickstarter.js b/docs/_static/js/kickstarter.js
new file mode 100644
index 000000000..7d41edb9f
--- /dev/null
+++ b/docs/_static/js/kickstarter.js
@@ -0,0 +1,74 @@
+function setCookie(name, value, days) {
+ const date = new Date();
+ date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
+ document.cookie = encodeURIComponent(name) + '=' +
+ encodeURIComponent(value) +
+ '; expires=' + date.toGMTString();
+}
+
+function hasCookie(name, value) {
+ return document.cookie.split('; ').indexOf(name + '=' + value) >= 0;
+}
+
+$(function () {
+ const $kickstarter = $(
+ '' +
+ '' +
+ ' ×' +
+ ' Please consider supporting ' +
+ ' NoriPyt’s Wagtail Kickstarter' +
+ ' ' +
+ ' 
' +
+ ' to accelerate the development of this project.' +
+ '');
+
+ if (!hasCookie('kickstarterClosed', 'true')
+ && new Date() < new Date(2018, 4, 17)) {
+ $('body').prepend($kickstarter);
+ $kickstarter.find('.close').click(function (e) {
+ e.preventDefault();
+ setCookie('kickstarterClosed', 'true', 30);
+ $kickstarter.detach();
+ });
+ }
+});
diff --git a/docs/conf.py b/docs/conf.py
index 2597f7a92..34c07b1b4 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -289,3 +289,4 @@ texinfo_documents = [
def setup(app):
app.add_stylesheet('css/custom.css')
+ app.add_javascript('js/kickstarter.js')