Angular: Empty Fiddle

http://angularjs.org/

HTML

<script src="http://code.angularjs.org/angular-1.0.1.js"></script>
<div ng-controller="MainCtrl">



<a ng-click="toggleMenu(1)">Menu 1</a>
<a ng-click="toggleMenu(2)">Menu 2</a>
<a ng-click="toggleMenu(3)">Menu 3</a>

<form ng-show="model.showmenu == 1">
  <label> 1 </label>
</form>

<form ng-show="model.showmenu == 2" ng-cloak>
  <label> 2 </label>
</form>

<form ng-show="model.showmenu == 3" ng-cloak>
  <label> 3 </label>
</form></div>

JavaScript

var myApp = angular.module('myApp',[]).controller('MainCtrl',function($scope){
$scope.model = {
    showmenu:1
}

$scope.toggleMenu = function(val){
    $scope.model.showmenu = val;
}
});