// Fotos müssen in der Dateiverwaltung unter "startseite" hochgeladen sein!

var slideshowSpeed = 6000;
var photos = [ 
	{
		"title" : "",
		"image" : "start_Advent_2011.jpg",
		"url" : "http://www.die-cma.at/de/fuer-besucher/ossiach/begegnung-im-advent/",
		"linktPositionTop" : "",
		"linktPositionleft" : ""
	}
	, {
		"title" : "",
		"image" : "start_kongress_2011.jpg",
		"url" : "http://www.die-cma.at/die-cma/front_content.php?idart=379&termin=223",
		"linktPositionTop" : "",
		"linktPositionleft" : ""
	}
];



$(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(upload/startseite/" + photoObject.image + ")",
			"display" : "block",
			"z-index" : currentZindex
		});
		// Hide link
		$("#link").css({"display" : "none"});
		// set link
		$("#link a")
			.attr("href", photoObject.url)
			.css({
			"width" : "800px",
			"height" : "300px",
			"z-index" : "999",
			"display" : "block"
		});
		
		
		// Hide the header bg / logo float right
		$("#header").css({"background" : "none"});
		$("#headerrechts").css({"float" : "right"});
		

		
		// Fade out the current container
		// and display the header text when animation is complete
		$("#headerimg" + currentContainer).fadeOut(1000,function() {
			setTimeout(function() {
				$("#link").css({"display" : "block" , "position" : "absolute"});
				animating = false;
			}, 10);
		});
	};
	
	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);
	
});