/*
* Author:      Marco Kuiper (http://www.marcofolio.net/)
*/

// Speed of the automatic slideshow
var slideshowSpeed = 15000;

// Variable to store the images we need to set as background
// which also includes some text and url's.
var photos = [ {
		"slidertitle" : "<img src='/library/images/backgrounds/home/american-water.png' alt='Making Waves.' title='Making Waves.' border='0' />",
		"image" : "american-water.jpg",
		"url" : "/internet-marketing-portfolio/american-water/",
		"sliderlink" : "<img src='/library/images/backgrounds/home/american-water.gif' alt='Learn about our splashy work for American Water' title='Learn about our splashy work for American Water' border='0' />"
	}, {
		"slidertitle" : "<img src='/library/images/backgrounds/home/polartec.png' alt='Stoking the Fire.' title='Stoking the Fire.' border='0' />",
		"image" : "polartec.jpg",
		"url" : "/internet-marketing-portfolio/polartec/",
		"sliderlink" : "<img src='/library/images/backgrounds/home/polartec.gif' alt='Learn about our hot work for Polartec&reg;' title='Learn about our hot work for Polartec&reg;' border='0' />"
	}, {
		"slidertitle" : "<img src='/library/images/backgrounds/home/life-is-good.png' alt='Happy go-lucky' title='Happy go-lucky' border='0' />",
		"image" : "life-is-good.jpg",
		"url" : "/internet-marketing-portfolio/life-is-good/",
		"sliderlink" : "<img src='/library/images/backgrounds/home/life-is-good.gif' alt='Learn about the happy work we did for Life is good&reg;' title='Learn about the happy work we did for Life is good&reg;' border='0' />"
	}, {
		"slidertitle" : "<img src='/library/images/backgrounds/home/visit-nh.png' alt='You&#39;ll Love it Here.' title='You&#39;ll Love it Here.' border='0' />",
		"image" : "visit-nh.jpg",
		"url" : "/internet-marketing-portfolio/new-hampshire-travel-and-tourism/",
		"sliderlink" : "<img src='/library/images/backgrounds/home/visit-nh.gif' alt='Learn about our scenic work for NH Travel &amp; Tourism' title='Learn about our scenic work for NH Travel &amp; Tourism' border='0' />"
	}
];

//Added to randomize array of photos
photos.sort(function() {return 0.5 - Math.random()})



$(document).ready(function() {
		
	// Backwards navigation
	$("#back").click(function() {
		stopAnimation();
		navigate("back");
	});
	
	// Forward navigation
	$("#next").click(function() {
		stopAnimation();
		navigate("next");
	});
	
	var interval;
	$("#control").toggle(function(){
		stopAnimation();
	}, function() {
		// Change the background image to "pause"
		$(this).css({ "background-image" : "url(images/btn_pause.png)" });
		
		// 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
		$("#headerimg" + activeContainer).css({
			"background-image" : "url(/library/images/backgrounds/home/" + photoObject.image + ")",
			"display" : "block",
			"z-index" : currentZindex
		});
		
		// Hide the header text
		$("#headertxt").css({"display" : "none"});
		
		// Set the new header text
		//$("#slidercontent").html(photoObject.slidercontent);
		$("#sliderlink")
			.attr("href", photoObject.url)
			.html(photoObject.sliderlink);
		$("#slidertitle")
			.attr("href", photoObject.url)
			.html(photoObject.slidertitle);
		
		$("#current")
			.html(currentImg + " / " + photos.length);

		
		// Fade out the current container
		// and display the header text when animation is complete
		$("#headerimg" + currentContainer).animate({width:'toggle'}, 900, function() {
			setTimeout(function() {
				$("#headertxt").css({"display" : "block"});
				animating = false;
			});
		});
	};
	
	var stopAnimation = function() {
		// Change the background image to "play"
		$("#control").css({ "background-image" : "url(images/btn_play.png)" });
		
		// Clear the interval
		clearInterval(interval);
	};
	
	// We should statically set the first image
	navigate("next");
	
	// Start playing the animation
	interval = setInterval(function() {
		navigate("next");
	}, slideshowSpeed);
	
});