// Speed of the automatic slideshow
var slideshowSpeed = 6000;

// Variable to store the images we need to set as background
// which also includes some text and url's.
var photos = [ {
		"title" : "",
		"image" : "montymarketing.jpg",
		"url" : "http://www.montymarketing.com",
		"firstline" : "montymarketing.com",
		"secondline" : "met CMS van talence."
	}, {
		"title" : "",
		"image" : "livinghouse1.jpg",
		"url" : "http://www.livinghouse.nl",
		"firstline" : "livinghouse.nl",
		"secondline" : "met webshop van talence."
	}, {
		"title" : "",
		"image" : "beanieshop.jpg",
		"url" : "http://www.beanieshop.nl",
		"firstline" : "beanieshop.nl",
		"secondline" : "met webshop van talence."
	}, {
		"title" : "",
		"image" : "younghoreca.jpg",
		"url" : "http://www.younghoreca.nl",
		"firstline" : "younghoreca.nl",
		"secondline" : "met intranet van talence."
	}
];



jQuery(document).ready(function() {
		
	// Backwards navigation
	jQuery("#back").click(function() {
		stopAnimation();
		navigate("back");
	});
	
	
	jQuery('#back').hover (function() {
			jQuery('#back').fadeOut(0, function() {
				$('#back').fadeIn(300);						 
			});
		}
	);
	
	// Forward navigation
	jQuery("#next").click(function() {
		stopAnimation();
		navigate("next");
	});
	
	
	jQuery('#next').hover (function() {
			jQuery('#next').fadeOut(0, function() {
				$('#next').fadeIn(300);						 
			});
		}
	);
	

	var interval;
	jQuery("#control").toggle(function(){
		stopAnimation();
	}, function() {
		// Change the background image to "pause"
		jQuery(this).css({ "background-image" : "url()" });
		
		// Show the next image
		navigate("next");
		
		// Start playing the animation
		interval = setInterval(function() {
			navigate("next");
		}, slideshowSpeed);
	});
	
	
	var activeContainer = 1;	
	var currentImg = 0;
	var animating = false;
	var navigate = function(direction) {
		// Check if no animation is running. If it is, prevent the action
		if(animating) {
			return;
		}
		
		// Check which current image we need to show
		if(direction == "next") {
			currentImg++;
			if(currentImg == photos.length + 1) {
				currentImg = 1;
			}
		} else {
			currentImg--;
			if(currentImg == 0) {
				currentImg = photos.length;
			}
		}
		
		// Check which container we need to use
		var currentContainer = activeContainer;
		if(activeContainer == 1) {
			activeContainer = 2;
		} else {
			activeContainer = 1;
		}
		
		showImage(photos[currentImg - 1], currentContainer, activeContainer);
		
	};
	
	var currentZindex = -1;
	var showImage = function(photoObject, currentContainer, activeContainer) {
		animating = true;
		
		// Make sure the new container is always on the background
		currentZindex--;
		
		// Set the background image of the new active container
		jQuery("#headerimg" + activeContainer).css({
			"background-image" : "url(http://www.talence.nl/images/" + photoObject.image + ")",
			"display" : "block",
			"z-index" : currentZindex
		});
		
		// Hide the header text
		jQuery("#headertxt").css({"display" : "none"});
		
		// Set the new header text
		jQuery("#firstline")
		.attr("href", photoObject.url)		
		.html(photoObject.firstline).fadeIn(1200);
		jQuery("#secondline")
			.html(photoObject.secondline).fadeIn(1200);
		jQuery("#pictureduri")
			.attr("href", photoObject.url)
			.html(photoObject.title);
		
		// Fade out the current container
		// and display the header text when animation is complete
		jQuery("#headerimg" + currentContainer).fadeOut(function() {
			setTimeout(function() {
				jQuery("#headertxt").css({"display" : "block"});
				animating = false;
			}, 200);
		});
	};
	
	var stopAnimation = function() {
		// Change the background image to "play"
		//jQuery("#control").css({ "background-image" : "url(http://www.talence.nl/images/btn_play.png)" });
		//jQuery(".pause").css({ "cursor" : "pointer" });
		// Clear the interval
		clearInterval(interval);
		interval = setInterval(function() {
			navigate("next");
		}, slideshowSpeed);
	};
	
	// We should statically set the first image
	navigate("next");
	
	// Start playing the animation
	interval = setInterval(function() {
		navigate("next");
	}, slideshowSpeed);

});