1 files changed, 10 insertions, 11 deletions
diff --git a/morphic.js b/morphic.js
index 329c3ed..b55b180 100644
--- a/morphic.js
+++ b/morphic.js
@@ -10353,17 +10353,16 @@ WorldMorph.prototype.initEventListeners = function () {
         false
     );
 
-    // window.onbeforeunload = function (evt) {
-    //     var e = evt || window.event,
-    //         msg = "Are you sure you want to leave?";
-    //     // For IE and Firefox
-    //     if (e) {
-    //         e.returnValue = msg;
-    //     }
-    //     // For Safari / chrome
-    //     return msg;
-    // };
-    window.onbeforeunload = null;
+    window.onbeforeunload = function (evt) {
+        var e = evt || window.event,
+            msg = "Are you sure you want to leave?";
+        // For IE and Firefox
+        if (e) {
+            e.returnValue = msg;
+        }
+        // For Safari / chrome
+        return msg;
+    };
 };
 
 WorldMorph.prototype.mouseDownLeft = function () {