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

// 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 = [ 
	{
		"image" : "india_aviation_2012.jpg"
	}, {
		"image" : "airport_expo_2012.jpg"
	}, {
		"image" : "aircraftinteriors_mars_2012.jpg"
	}
	
];



$(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(/img/home/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(/img/home/" + photoObject.image + ")",
			"display" : "block",
			"z-index" : currentZindex
		});
		
		// Hide the header text
		 $("#headertxt").css({"display" : "none"});	
		
		// Fade out the current container
		// and display the header text when animation is complete
		 $("#headerimg" + currentContainer).fadeOut(function() {
			setTimeout(function() {
				// $("#headertxt").css({"display" : "block"});
				animating = false;
			}, 500);
		 });
	};
	
	var stopAnimation = function() {
		// Change the background image to "play"
		$("#control").css({ "background-image" : "url(/img/home/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);


// On cache les sous-menus
// sauf celui qui porte la classe "open_at_load" :
	$("ul.subMenu:not('.open_at_load')").hide();
// On selectionne tous les items de liste portant la classe "toggleSubMenu"
    
// et on remplace l'element span qu'ils contiennent par un lien :
	$("li.toggleSubMenu span").each( function () {
// On stocke le contenu du span :
	var TexteSpan = $(this).text();
	$(this).replaceWith('<a href="" title="Afficher le sous-menu">' + TexteSpan + '</a>') ;
	}) ;
    
// On modifie l'evenement "click" sur les liens dans les items de liste
// qui portent la classe "toggleSubMenu" :
	$("li.toggleSubMenu > a").click( function () {
// Si le sous-menu etait deja ouvert, on le referme :
	if ($(this).next("ul.subMenu:visible").length != 0) {
	$(this).next("ul.subMenu").slideUp("fast", function () { $(this).parent().removeClass("open") } );
		}
// Si le sous-menu est cache, on ferme les autres et on l'affiche :
		else {
			$("ul.subMenu").slideUp("fast", function () { $(this).parent().removeClass("open") } );
			$(this).next("ul.subMenu").slideDown("fast", function () { $(this).parent().addClass("open") } );
            }
// On empêche le navigateur de suivre le lien :
	return false;
	});


/* Carouselle initialisation */
    $("#jCarouselLite").jCarouselLite({
	auto: 800,
    speed: 1000,
	visible: 6	
    });
	
});