.mySlides {display:none;} ❮= Slide AnteriorPróximo Slide=❯ var slideIndex = 1; showDivs(slideIndex); function plusDivs(n) { showDivs(slideIndex += n); } function showDivs(n) { var i; var x = document.getElementsByClassName("mySlides"); if (n > x.length) {slideIndex = 1} if (n < 1) {slideIndex = x.length} for (i = 0; i < x.length; i++) { x[i].style.display = "none"; } x[slideIndex-1].style.display = "block"; }