var num=0;

imgArray = [
  ['img/360/1.jpg'],
  ['img/360/2.jpg'],
  ['img/360/3.jpg'],
  ['img/360/4.jpg'],
  ['img/360/5.jpg'],
  ['img/360/6.jpg'],
  ['img/360/7.jpg'],
  ['img/360/8.jpg'],
  ['img/360/9.jpg'],
  ['img/360/10.jpg'],
  ['img/360/11.jpg'],
  ['img/360/12.jpg'],
  ['img/360/13.jpg'],
  ['img/360/14.jpg'],
]

function slideshow(slide_num) {
  document.getElementById('mypic').src=imgArray[slide_num][0];
  document.getElementById('mypic').alt=imgArray[slide_num][1];
  document.getElementById('burns').innerHTML=imgArray[slide_num][2];
}

function slideshowUp() {
  num++;
  num = num % imgArray.length;
  slideshow(num);
}

function slideshowBack() {
  num--;
  if (num < 0) {num=imgArray.length-1;}
  num = num % imgArray.length;
  slideshow(num);
}