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diff --git a/src/ng/directive/ngSwitch.js b/src/ng/directive/ngSwitch.js
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+'use strict';
+
+/**
+ * @ngdoc directive
+ * @name angular.module.ng.$compileProvider.directive.ng-switch
+ * @restrict EA
+ *
+ * @description
+ * Conditionally change the DOM structure.
+ *
+ * @usageContent
+ * <any ng-switch-when="matchValue1">...</any>
+ *   <any ng-switch-when="matchValue2">...</any>
+ *   ...
+ *   <any ng-switch-default>...</any>
+ *
+ * @scope
+ * @param {*} ng-switch|on expression to match against <tt>ng-switch-when</tt>.
+ * @paramDescription
+ * On child elments add:
+ *
+ * * `ng-switch-when`: the case statement to match against. If match then this
+ *   case will be displayed.
+ * * `ng-switch-default`: the default case when no other casses match.
+ *
+ * @example
+    <doc:example>
+      <doc:source>
+        <script>
+          function Ctrl($scope) {
+            $scope.items = ['settings', 'home', 'other'];
+            $scope.selection = $scope.items[0];
+          }
+        </script>
+        <div ng-controller="Ctrl">
+          <select ng-model="selection" ng-options="item for item in items">
+          </select>
+          <tt>selection={{selection}}</tt>
+          <hr/>
+          <div ng-switch on="selection" >
+            <div ng-switch-when="settings">Settings Div</div>
+            <span ng-switch-when="home">Home Span</span>
+            <span ng-switch-default>default</span>
+          </div>
+        </div>
+      </doc:source>
+      <doc:scenario>
+        it('should start in settings', function() {
+         expect(element('.doc-example-live [ng-switch]').text()).toMatch(/Settings Div/);
+        });
+        it('should change to home', function() {
+         select('selection').option('home');
+         expect(element('.doc-example-live [ng-switch]').text()).toMatch(/Home Span/);
+        });
+        it('should select deafault', function() {
+         select('selection').option('other');
+         expect(element('.doc-example-live [ng-switch]').text()).toMatch(/default/);
+        });
+      </doc:scenario>
+    </doc:example>
+ */
+var NG_SWITCH = 'ng-switch';
+var ngSwitchDirective = valueFn({
+  restrict: 'EA',
+  compile: function(element, attr) {
+    var watchExpr = attr.ngSwitch || attr.on,
+        cases = {};
+
+    element.data(NG_SWITCH, cases);
+    return function(scope, element){
+      var selectedTransclude,
+          selectedElement,
+          selectedScope;
+
+      scope.$watch(watchExpr, function(value) {
+        if (selectedElement) {
+          selectedScope.$destroy();
+          selectedElement.remove();
+          selectedElement = selectedScope = null;
+        }
+        if ((selectedTransclude = cases['!' + value] || cases['?'])) {
+          scope.$eval(attr.change);
+          selectedScope = scope.$new();
+          selectedTransclude(selectedScope, function(caseElement) {
+            selectedElement = caseElement;
+            element.append(caseElement);
+          });
+        }
+      });
+    };
+  }
+});
+
+var ngSwitchWhenDirective = ngDirective({
+  transclude: 'element',
+  priority: 500,
+  compile: function(element, attrs, transclude) {
+    var cases = element.inheritedData(NG_SWITCH);
+    assertArg(cases);
+    cases['!' + attrs.ngSwitchWhen] = transclude;
+  }
+});
+
+var ngSwitchDefaultDirective = ngDirective({
+  transclude: 'element',
+  priority: 500,
+  compile: function(element, attrs, transclude) {
+    var cases = element.inheritedData(NG_SWITCH);
+    assertArg(cases);
+    cases['?'] = transclude;
+  }
+});