/*
* Author:      Marco Kuiper (http://www.marcofolio.net/)
*/
(function($) {
  var cache = [];
  // Arguments are image paths relative to the current page.
  $.preLoadImages = function() {
    var args_len = arguments.length;
    for (var i = args_len; i--;) {
      var cacheImage = document.createElement('img');
      cacheImage.src = arguments[i];
      cache.push(cacheImage);
    }
  }
})(jQuery)
jQuery.preLoadImages("vacation.jpg","work.png","biking.jpg","nature.jpg","food.jpg");
// 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 = [ {
		"price" : "10.00",
		"image" : "vacation.jpg",
		"url" : "http://www.sxc.hu/photo/1271909",
		"product" : "Going on"
	}, {
		"price" : "22.00",
		"image" : "work.png",
		"url" : "http://www.sxc.hu/photo/1265695",
		"product" : "Or still busy at"
	}, {
		"price" : "17.00",
		"image" : "biking.jpg",
		"url" : "http://www.sxc.hu/photo/1221065",
		"product" : "Get out and be"
	}, {
		"price" : "18.00",
		"image" : "nature.jpg",
		"url" : "http://www.sxc.hu/photo/1271915",
		"product" : "Take a fresh breath of"
	}, {
		"price" : "35.00",
		"image" : "food.jpg",
		"url" : "http://www.sxc.hu/photo/1042413",
		"product" : "Enjoy some delicious"
	}
];



$(document).ready(function() {

	var interval;
	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(media/" + photoObject.image + ")",
			"display" : "block",
			"z-index" : currentZindex
		});
		
		// Hide the header text
		$("#headertxt").css({"display" : "none"});
		
		// Set the new header text
		$("#product a")
			.attr("href", photoObject.url)
			.html(photoObject.product);
		$("#price a")
			.attr("href", photoObject.url)
			.html(photoObject.price);
		
		
		// Fade out the current container
		// and display the header text when animation is complete
		$("#headerimg" + currentContainer).fadeOut('slow', function() {
			setTimeout(function() {
				if ($.browser.msie && $.browser.version > 6 ) 
				{
					$("#headertxt").css({"display" : "block"});
				} else
				{
				$("#headertxt").fadeIn();
				}
				animating = false;
			}, 100);
		});
	};
	
	// We should statically set the first image
	navigate("next");
	
	// Start playing the animation
	interval = setInterval(function() {
		navigate("next");
	}, slideshowSpeed);
	
});