var pix = new Array(
"windTurbine_bw.jpg", "bostonSkyline_bw.jpg",
"Charlotte_Skyline_No_Stadium_Daytime.jpg",
"bostonBuilding_bw.jpg", "wilmingtonRiverBlue.jpg");
var len = pix.length;
var cur = 0;
var img;

var timeDelay = 5000;
function startshow()
{
  setInterval("slideshow()", timeDelay);
}

function slideshow()
{
  cur++;
  if (cur == len) { cur = 0; }
  img.src = "images/" + pix[cur];
}

window.onload = function()
{
  img = document.getElementsByTagName('article')[0].getElementsByTagName('img')[0];
  startshow();
};