// JavaScript Document
var num=0;
// image array has filename, alt info and caption as fields
imgArray = [
  ['005.jpg','Doryman Motel - Cape Cod', 'Doryman Motel - Cape Cod'],
  ['014.jpg','Doryman Motel - Cape Cod', 'Doryman Motel - Cape Cod'],
  ['016.jpg','Doryman Motel - Cape Cod', 'Doryman Motel - Cape Cod'],
  ['025.jpg','Doryman Motel - Cape Cod', 'Doryman Motel - Cape Cod'],
  ['040.jpg','Doryman Motel - Cape Cod', 'Doryman Motel - Cape Cod'],
  ['043.jpg','Doryman Motel - Cape Cod', 'Doryman Motel - Cape Cod'],
  ['rwp005.jpg','Doryman Motel - Cape Cod', 'Doryman Motel - Cape Cod'],
  ['rwp025.jpg','Doryman Motel - Cape Cod', 'Doryman Motel - Cape Cod'],
  ['rwp036.jpg','Doryman Motel - Cape Cod', 'Doryman Motel - Cape Cod']
]

function slideshow(slide_num) {
  document.getElementById('dorypic').src=imgArray[slide_num][0];
  document.getElementById('dorypic').alt=imgArray[slide_num][1];
  document.getElementById('captionhere').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);
}