window.addEvent('domready',function() {
	/* preloading */
	var imagesDir = '/photos/slideshow/';
	var images = ['arabesque.jpg','wilkins.jpg', 'nutcracker.jpg', 'btd.jpg', 'barre_arabe.jpg'];
	var holder = $('photo_top');
	images.each(function(img,i){ images[i] = imagesDir + '' + img; }); //add dir to images
	var progressTemplate = 'Loading image {x} of ' + images.length;
	var updateProgress = function(num) {
		progress.set('text',progressTemplate.replace('{x}',num));
	};
	var progress = $('progress');
	updateProgress('text','0');
	var loader = new Asset.images(images, {
		onProgress: function(c,index) {
			updateProgress('text',index + 1);
		},
		onComplete: function() {
			var slides = [];
			/* put images into page */
			images.each(function(im) {
				slides.push(new Element('img',{
					src:im,
					width: 950,
					height: 376,
					styles: {
						opacity:0,
						top:0,
						left:0,
						position:'absolute',
						'z-index': 10
					}
				}).inject(holder));
				holder.setStyle('background-color','white');
			});
			var showInterval = 5000;
			var index = 0;
			progress.set('text','');
			(function() {slides[index].tween('opacity',1); }).delay(1000);
			var start = function() {
				(function() {
					holder.setStyle('background','');
					slides[index].fade(0);
					++index;
					index = (slides[index] ? index : 0);
					slides[index].fade(1);
				}).periodical(showInterval);
			};

			/* start the show */
			start();
		}
	});
});