text: /*!
      * Start Bootstrap - SB Admin v6.0.2 (https://startbootstrap.com/template/sb-admin)
      * Copyright 2013-2020 Start Bootstrap
      * Licensed under MIT (https://github.com/StartBootstrap/startbootstrap-sb-admin/blob/master/LICENSE)
      */
  (function($) {
      "use strict";
  
      // Add active state to sidbar nav links
      var path = window.location.href; // because the 'href' property of the DOM element is the absolute path
          $("#layoutSidenav_nav .sb-sidenav a.nav-link").each(function() {
              if (this.href === path) {
                  $(this).addClass("active");
              }
          });
  
      // Toggle the side navigation
      $("#sidebarToggle").on("click", function(e) {
          e.preventDefault();
          $("body").toggleClass("sb-sidenav-toggled");
      });
  })(jQuery);
  
  
  
   function dangnhap()  
   {
               var u = document.getElementById("username").value;
               var p = document.getElementById("password").value;
  
               if(u === "") {
                   alert("Làm ơn nhập username");
                   return false;
               }
               if(p === "") {
                   alert("Làm ơn nhập Password");
                   return false;
               }
               
               alert("Chạy nào !");
               return true;
           }
  