diff --git a/application/views/appointments/book_success.php b/application/views/appointments/book_success.php
index f1ddfa94..26256bfb 100755
--- a/application/views/appointments/book_success.php
+++ b/application/views/appointments/book_success.php
@@ -81,6 +81,7 @@
     </script>
 
     <script src="<?= asset_url('assets/js/frontend_book_success.js') ?>"></script>
+    <script src="<?= asset_url('assets/js/polyfill.js') ?>"></script>
     <script src="<?= asset_url('assets/js/general_functions.js') ?>"></script>
 
     <?php google_analytics_script() ?>
diff --git a/application/views/appointments/message.php b/application/views/appointments/message.php
index 8280bffe..903d3175 100644
--- a/application/views/appointments/message.php
+++ b/application/views/appointments/message.php
@@ -20,6 +20,7 @@
     <script src="<?= asset_url('assets/ext/jquery/jquery.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/bootstrap/js/bootstrap.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/datejs/date.min.js') ?>"></script>
+    <script src="<?= asset_url('assets/js/polyfill.js') ?>"></script>
     <script src="<?= asset_url('assets/js/general_functions.js') ?>"></script>
 </head>
 
diff --git a/application/views/backend/footer.php b/application/views/backend/footer.php
index 7a8e52a9..b561b5fa 100644
--- a/application/views/backend/footer.php
+++ b/application/views/backend/footer.php
@@ -26,6 +26,7 @@
 </div>
 
 <script src="<?= asset_url('assets/js/backend.js') ?>"></script>
+<script src="<?= asset_url('assets/js/polyfill.js') ?>"></script>
 <script src="<?= asset_url('assets/js/general_functions.js') ?>"></script>
 </body>
 </html>
diff --git a/application/views/general/error404.php b/application/views/general/error404.php
index 86d9f08e..783e50d8 100644
--- a/application/views/general/error404.php
+++ b/application/views/general/error404.php
@@ -18,6 +18,7 @@
     <script src="<?= asset_url('assets/ext/jquery/jquery.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/bootstrap/js/bootstrap.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/datejs/date.min.js') ?>"></script>
+    <script src="<?= asset_url('assets/js/polyfill.js') ?>"></script>
     <script src="<?= asset_url('assets/js/general_functions.js') ?>"></script>
 
     <style>
diff --git a/application/views/general/installation.php b/application/views/general/installation.php
index b3874ed2..4736f089 100755
--- a/application/views/general/installation.php
+++ b/application/views/general/installation.php
@@ -182,6 +182,7 @@
     <script src="<?= asset_url('assets/ext/jquery-ui/jquery-ui.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/bootstrap/js/bootstrap.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/datejs/date.min.js') ?>"></script>
+    <script src="<?= asset_url('assets/js/polyfill.js') ?>"></script>
     <script src="<?= asset_url('assets/js/general_functions.js') ?>"></script>
     <script src="<?= asset_url('assets/js/installation.js') ?>"></script>
 </body>
diff --git a/application/views/user/forgot_password.php b/application/views/user/forgot_password.php
index 4c8c6b46..e4ccff00 100644
--- a/application/views/user/forgot_password.php
+++ b/application/views/user/forgot_password.php
@@ -88,6 +88,7 @@
                 <?= lang('go_to_login') ?></a>
         </form>
     </div>
+    <script src="<?= asset_url('assets/js/polyfill.js') ?>"></script>
     <script src="<?= asset_url('assets/js/general_functions.js') ?>"></script>
     <script src="<?= asset_url('assets/js/forgot_password.js') ?>"></script>
 </body>
diff --git a/application/views/user/login.php b/application/views/user/login.php
index 522018f0..3790b1e0 100644
--- a/application/views/user/login.php
+++ b/application/views/user/login.php
@@ -97,6 +97,7 @@
         </form>
     </div>
 
+    <script src="<?= asset_url('assets/js/polyfill.js') ?>"></script>
     <script src="<?= asset_url('assets/js/general_functions.js') ?>"></script>
     <script src="<?= asset_url('assets/js/login.js') ?>"></script>
 </body>
diff --git a/assets/js/polyfill.js b/assets/js/polyfill.js
new file mode 100644
index 00000000..d1ca25e4
--- /dev/null
+++ b/assets/js/polyfill.js
@@ -0,0 +1,46 @@
+// https://tc39.github.io/ecma262/#sec-array.prototype.find
+if (!Array.prototype.find) {
+    Object.defineProperty(Array.prototype, 'find', {
+        value: function(predicate) {
+            // 1. Let O be ? ToObject(this value).
+            if (this == null) {
+                throw TypeError('"this" is null or not defined');
+            }
+
+            var o = Object(this);
+
+            // 2. Let len be ? ToLength(? Get(O, "length")).
+            var len = o.length >>> 0;
+
+            // 3. If IsCallable(predicate) is false, throw a TypeError exception.
+            if (typeof predicate !== 'function') {
+                throw TypeError('predicate must be a function');
+            }
+
+            // 4. If thisArg was supplied, let T be thisArg; else let T be undefined.
+            var thisArg = arguments[1];
+
+            // 5. Let k be 0.
+            var k = 0;
+
+            // 6. Repeat, while k < len
+            while (k < len) {
+                // a. Let Pk be ! ToString(k).
+                // b. Let kValue be ? Get(O, Pk).
+                // c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+                // d. If testResult is true, return kValue.
+                var kValue = o[k];
+                if (predicate.call(thisArg, kValue, k, o)) {
+                    return kValue;
+                }
+                // e. Increase k by 1.
+                k++;
+            }
+
+            // 7. Return undefined.
+            return undefined;
+        },
+        configurable: true,
+        writable: true
+    });
+}