let slideIndex = 1;
showSlides(slideIndex);

function plusSlides(n)
{
  showSlides(slideIndex += n);
}

function currentSlide(n)
{
  showSlides(slideIndex = n);
}

function showSlides(n)
{
  let i;
  let slides = document.getElementsByClassName("mySlides");
  let dots = document.getElementsByClassName("dot");
  if (n > slides.length)
	{
		slideIndex = 1
	}
  if (n < 1)
	{
		slideIndex = slides.length
	}
  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";
}