var imgs1 = new Array("../bilder/top_img_1.jpg","../bilder/top_img_2.jpg","../bilder/top_img_3.jpg","../bilder/top_img_4.jpg");
var currentImg = 0;
var imgCt1 = 4;
function cycle1() {
  if (currentImg == imgCt1) {
    currentImg = 0;
  }
var Img = document.getElementById('adImg');
  Img.src=imgs1[currentImg]
  currentImg++;
}
  window.setInterval("cycle1()",5000);