added parent call

dist/namespace.js

@@ -120,10 +120,12 @@
 		{
 			superClass = window.include(superClass);
 		}
+		subClass.prototype = superClass.prototype;
+		subClass.prototype.__parent = superClass.prototype;
 		subClass.prototype = Object.create(
-			superClass.prototype
+			subClass.prototype
 		);
 		return subClass.prototype;
 	};
 
-}(window));
+}(window));

src/extend.js

@@ -26,10 +26,12 @@
 		{
 			superClass = window.include(superClass);
 		}
+		subClass.prototype = superClass.prototype;
+		subClass.prototype.__parent = superClass.prototype;
 		subClass.prototype = Object.create(
-			superClass.prototype
+			subClass.prototype
 		);
 		return subClass.prototype;
 	};
 
-}(window));
+}(window));

test/index.html

@@ -52,6 +52,24 @@
 		assert.ok(o instanceof ParentClass, "Inherit parent class");
 
 	});
+
+	test('extend.parent', function(assert){
+                expect(3);
+
+		var ParentClass = function(){};
+                ParentClass.prototype.ping = function(){return "parent";}
+                var MyClass = function(){};
+
+		extend(MyClass, ParentClass);
+		MyClass.prototype.ping = function(){return "child";}
+
+                var o = new MyClass();
+
+                assert.ok(o.ping() === "child", "Child function");
+                assert.ok(o.__parent.ping.apply(o) === "parent", "Parent function");
+		assert.ok(o.ping() !== o.__parent.ping.apply(o), "Child != Parent function");
+
+        });
 	</script>
 </body>
-</html>
+</html>