Less global stuff in helpers.js

public/js/helpers.js

@@ -1,10 +1,18 @@
 
-Object.keys = Object.keys || function(o) { 
+(function (Object) {
-    var result = []; 
+
-    for(var name in o) { 
+    'use strict';
-        if (o.hasOwnProperty(name)) 
+
-          result.push(name); 
+    Object.keys = Object.keys || function(o) { 
-    } 
+        var result = []; 
-    return result; 
+        for(var name in o) { 
-};
+            if (o.hasOwnProperty(name)) {
+                result.push(name);
+            }
+        } 
+
+        return result; 
+    };
+
+})(Object);