   for (i = 0; i < slides.length; i++) {
        slides[i].style.display = "none";
      }
      for (i = 0; i < dots.length; i++) {
        dots[i].className = dots[i].className.replace(" active", "");
      }
      slides[slideIndex-1].style.display = "block";
      dots[slideIndex-1].className += " active";
    }
    </script>
    <script>
      var preloader = document.getElementById('load');
      var scroll = document.getElementById('main');
      function myfunction(){
          preload