var loadedImages = [], imageChanger;
	var slide = 0;//tracks which slide is showing
	slidePause = 1000; //length of time to keep a slide at 1 opacity
	var slider = function(){
		imageChanger = $('image-changer');
		var path = 'http://www.pixmedia.cz/media/portfolio-header/';
		var images = [
			path + 'gallerycafe-cz.jpg',
			path + 'dastcompany-cz.jpg',
			path + 'budufit-cz.jpg',
			path + 'fullsport-cz.jpg',
			path + 'woox-cz.jpg',
			path + 'litepodlahy-duda-cz.jpg',
			path + 'oknacert-cz.jpg',
			path + 'kraken-cz.jpg',
			path + 'luxusni-nehty-cz.jpg',
			path + 'ubytovani-beskydy-bily-kriz-cz-leto.jpg'		
		];
		
		imageChanger.setStyles({'opacity': 0, 'display': 'none'});
		
		loadImages();
		function loadImages(){
			var imageChangerImgs = $$('#image-changer img');
			if (imageChangerImgs.length > 0) imageChangerImgs.each(function(image) {
				image.remove();
			});
			
			imageChanger.setStyle('display', 'block');
			new Asset.images(images, {
				onProgress: function(i) {
					this.setStyles({
						'position': 'absolute',
						'opacity': 0
					});
					loadedImages[i] = this;
				},
				onComplete: function() {
					var fx = $('image-changer').effect('opacity').start(1).chain(function(){
						nextImg(-1);
					});
				} 
			});
		} 
	}
	function nextImg(){
		slide = (slide == loadedImages.length-1)?0: slide+1;
		//slide = $random(0,loadedImages.length-1); //show pictures randomly
		if($E('img', imageChanger)){
			$E('img',imageChanger).effect('opacity', {
				duration: 3000, onComplete: function(){
					$E('img',imageChanger).remove();
				}
			}).start(0);
			showImg(loadedImages[slide]);// fade out WHILE fading in next image
		}
		else
			showImg(loadedImages[slide]);
	}
	function showImg(img){
		img.inject(imageChanger);
		img.effect('opacity', {
			duration: 3000, onComplete: function(){
				setTimeout('nextImg()',slidePause);
			}
		}).start(1);
	}
	window.addEvent('domready', slider);