// JavaScript Document slideShowD
first = 1;
      last = 8;
      current = 1;
            
      function nextPicture() {
          // Hide current picture
          object = document.getElementById('slide' + current);
          object.style.display = 'none';
                
          // Show next picture, if last, loop back to front
          if (current == last) { current = 1; }
          else { current++ }
          object = document.getElementById('slide' + current);
          object.style.display = 'block';
		  setTimeout(nextPicture, 3500);
       }

       function previousPicture() {
          // Hide current picture
          object = document.getElementById('slide' + current);
          object.style.display = 'none';
                
          if (current == first) { current = last; }
          else { current--; }
          object = document.getElementById('slide' + current);
          object.style.display = 'block';
      }