function slideshow(slide_num) 
{
   
   document.getElementById('mypic').src=imgArray[slide_num][0];
   document.getElementById('mypic').alt=imgArray[slide_num][1];
   var arr = new Array(); 
  
   arr = imgArray[slide_num][2].split('pra');
    
   document.getElementById('burns1').innerHTML=arr[0];
   <!--document.getElementById('burns2').innerHTML=arr[1];-->
   document.getElementById('burns3').innerHTML=arr[1];
  }

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);
 
}