Fix map pin clicking in IE11.

It turns out that whilst IE9+ defines MouseEvent, it's not in the
form that can be used as a constructor until Edge. To fix this we
check that MouseEvent is a function before using it as one.

1 files changed, 3 insertions, 3 deletions

diff --git a/web/js/map-OpenLayers.js b/web/js/map-OpenLayers.js
index 43a0aadbb..553823818 100644
--- a/web/js/map-OpenLayers.js
+++ b/web/js/map-OpenLayers.js
@@ -241,7 +241,7 @@ var fixmystreet = fixmystreet || {};
 
         // All of this, just so that ctrl/cmd-click on a pin works?!
         var event;
-        if (window.MouseEvent) {
+        if (typeof window.MouseEvent === 'function') {
             event = new MouseEvent('click', evt);
             $a[0].dispatchEvent(event);
         } else if (document.createEvent) {
@@ -256,8 +256,8 @@ var fixmystreet = fixmystreet || {};
             event = document.createEventObject();
             event.metaKey = evt.metaKey;
             event.ctrlKey = evt.ctrlKey;
-            if (e.metaKey === undefined) {
-                e.metaKey = e.ctrlKey;
+            if (event.metaKey === undefined) {
+                event.metaKey = event.ctrlKey;
             }
             $a[0].fireEvent("onclick", event);
         } else {