function slideshowBg() {

	var myImages = ['/images/banner_image1.jpg','/images/banner_image2.jpg','/images/banner_image3.jpg','/images/banner_image4.jpg','/images/banner_image5.jpg'];
	
	// how many times should the photo change per page load
	var maxChanges = myImages.length * 30;
	// shuffle images so each time page loads, the photos show in different order
	var do_shuffle = true;
	// use simple randomness instead of shuffling (tends to repeat images too often)
	var do_randomly = false;
	// number of seconds between photo changes
	var seconds_between_photos = 6;
	// name of DIV to load photos into
	var div_name = "slideshow";
	
	var changes = 0;
	var timer;
	var thisImg = myImages.length - 1;
	
	shuffle = function(o){ 
		for(var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
		return o;
	};
	
	if (do_shuffle) {
		myImages = shuffle(myImages);	
	}
	
	function nextImage () {
		
		var low = 0;
		var high = myImages.length - 1;
		var rand_no = Math.floor((high-(low - 1))*Math.random()) + low;
		
		thisImg++;
		changes++;
		if (thisImg==myImages.length) {
			thisImg = 0;
		}
		if (changes==maxChanges) {
			clearInterval(timer);
		}
		if (do_randomly) {
			thisImg = rand_no;
			return myImages[rand_no];
		} else {
			return myImages[thisImg];
		}
	}
	
	function changeImage () {
		
		var t = myImages[thisImg];
		var n = nextImage();
		
		if (t != n) {
			$("#"+div_name).addClass("loading");
			showImage(n);
		} else { 
			changeImage();
		}
	}
	
	function showImage(src)
	{
		$("#"+div_name+" img").fadeOut(400);
		var largeImage = new Image();
		$(largeImage).load(function()
							{
								$(this).hide();
								$("#"+div_name).append(this).removeClass("loading");
												 
								$(this).fadeIn(900);              
							});    
		$(largeImage).attr("src", src);                                                                               
	}
	
	function checkForLoaded () {
		if (document.getElementById(div_name) != null) {
			//alert("loaded");
			clearInterval(timer);
			changeImage();
			timer = setInterval(changeImage, (seconds_between_photos * 1000));
		}
	}
	
	timer = setInterval(checkForLoaded, 50);
	
}

window.onload = slideshowBg;