var rotateImg = new Array();

rotateImg[0]="BG-picture03.jpg";
rotateImg[1]="BG-picture02.jpg";
rotateImg[2]="BG-picture01.jpg";

var newImage = 0;
var totalImages = rotateImg.length;
var opacity = 100;

function rotateImage()
{
  newImage++;
  
  if (newImage == totalImages) {
    newImage = 0;
  }
  
  document.getElementById("backgroundImageTemp").src = rotateImg[newImage];
  
  opacity = 100;

  crossFadeImage();
  
  setTimeout("rotateImage()", 6500);
}

function crossFadeImage()
{
  opacity -= 10;
  
  opacity = opacity < 0 ? 0 : opacity;
  
  setOpacity('backgroundImage', opacity);
  
  if (opacity <= 0) {
    return switchImage();
  }
  
  setTimeout("crossFadeImage()", 50);
}

function switchImage()
{
  document.getElementById("backgroundImage").src = rotateImg[newImage];
    
  opacity = 100;
    
  setOpacity('backgroundImage', opacity);
}

function setOpacity(name, value)
{
  document.getElementById(name).style.opacity = value/100;
  document.getElementById(name).style.filter = 'alpha(opacity=' + value + ')';
}

window.onload = function ()
{
  setTimeout("rotateImage()", 6500);
}