app.directive('productTabs', function(){
    return {
      restrict: 'E',
      templateUrl: 'product-tabs.html',
    	controller: function(){
      	this.tab = 1;

    		this.isSet = function(checkTab) {
     			return this.tab === checkTab;
    		};

    		this.setTab = function(setTab) {
      		this.tab = setTab;
    		};
      }
      ,
      controllerAs: 'tab';
    };
  });