var ROTATION_TIME = 5;
var Photos = [
  {
    'imgUrl': 'http://dev.petsmartcruelty.com/images/275_nanners.jpg',
    'text':   'Nanners, a parakeet purchased from PetSmart store #0429 in Geneva, Illinois, suffers from psittacosis—a disease that can be transmitted to humans and may be fatal—and has plucked out all his feathers.'
  },
  {
    'imgUrl': 'http://dev.petsmartcruelty.com/images/275_petsmart_16.jpg',
    'text':   'This short-haired honey hamster suffered from wet tail.'
  },
  {
    'imgUrl': 'http://dev.petsmartcruelty.com/images/275_petsmart_22.jpg',
    'text':   'This gerbil suffered from wet tail and dehydration.'
  },
  {
    'imgUrl': '../images/275_military_macaw.jpg',
    'text':   'Jose, a large military macaw, had been living in PetSmart stores for more than a year—almost his entire life—when this picture was taken. Even PetSmart admits that large birds like Jose need, at the very least, four hours of interaction daily—a requirement that’s impossible to fulfill in a pet store setting.'
  },
  {
    'imgUrl': '../images/275_birds_in_cage.jpg',
    'text':   'At PetSmart store #0521 in Fairlawn, Ohio, 29 parakeets were crammed together in a cage that wouldn’t be adequate for even one bird, yet this is the norm in PetSmart stores across the country. Extreme crowding means that feces and urine will inevitably end up in the birds’ food, which is kept below the perches. This can make birds sick.'
  },
  {}
];
var preloadedImages = [];
var adIndex = 0;
function generatePhoto()
{
//  var adIndex = Math.floor(Math.random() * Photo.length - 1);
  var adHtml = '<img src="'+ preloadedImages[adIndex].src +'" border="0" />'+
               '<div class="mediainner">'+ Photos[adIndex].text;'</div>'
  document.getElementById('PhotoBlock').innerHTML = adHtml;
}
function rotatePhoto()
{
  if (adIndex > Photos.length - 2)
    adIndex = 0;
  generatePhoto();
  adIndex++;
  setTimeout("rotatePhoto()", (ROTATION_TIME * 3000));
}
function initPhoto()
{
  for (var i = 0; i < Photos.length; i++)
  {
    if (Photos[i].imgUrl)
    {
      var img = new Image();
      img.src = Photos[i].imgUrl;
      preloadedImages[i] = img;
    }
  }
  rotatePhoto();
}