diff --git a/js/custom.js b/js/custom.js
index 233d291..d6bfbee 100644
--- a/js/custom.js
+++ b/js/custom.js
@@ -1,23 +1,3 @@
 (function (Drupal) {
   //stuff goes here
 })(Drupal);
-(function ($) {
-
-    Drupal.behaviors.ethnographyBehavior = {
-        attach: function (context, settings) {
-            $("#text-fr").hide();
-
-            $( "#show-text-en" , context).click(function(e) {
-                e.preventDefault();
-                $("#text-en").show();
-                $("#text-fr").hide();
-            });
-            $( "#show-text-fr" , context).click(function(e) {
-                e.preventDefault();
-                $("#text-en").hide();
-                $("#text-fr").show();
-            });
-        }
-    };
-
-}(jQuery));
diff --git a/js/lang_switch.js b/js/lang_switch.js
new file mode 100644
index 0000000..233d291
--- /dev/null
+++ b/js/lang_switch.js
@@ -0,0 +1,23 @@
+(function (Drupal) {
+  //stuff goes here
+})(Drupal);
+(function ($) {
+
+    Drupal.behaviors.ethnographyBehavior = {
+        attach: function (context, settings) {
+            $("#text-fr").hide();
+
+            $( "#show-text-en" , context).click(function(e) {
+                e.preventDefault();
+                $("#text-en").show();
+                $("#text-fr").hide();
+            });
+            $( "#show-text-fr" , context).click(function(e) {
+                e.preventDefault();
+                $("#text-en").hide();
+                $("#text-fr").show();
+            });
+        }
+    };
+
+}(jQuery));
diff --git a/olivesbdh.libraries.yml b/olivesbdh.libraries.yml
index 27f48fd..b574af8 100755
--- a/olivesbdh.libraries.yml
+++ b/olivesbdh.libraries.yml
@@ -69,6 +69,8 @@ book:
   css:
     theme:
       css/components/book.css: {}
+  js:
+    js/lang_switch.js: {}
 
 cke-dialog:
   version: VERSION