text: var Lock = function () {
  
      return {
          //main function to initiate the module
          init: function () {
  
              $.backstretch([
                  "js/metronic/img/bg/1.jpg",
                  "js/metronic/img/bg/2.jpg",
                  "js/metronic/img/bg/3.jpg",
                  "js/metronic/img/bg/4.jpg"
              ], {
                  fade: 1000,
                  duration: 8000
              });
          }
  
      };
  
  }();