var thisURL = document.location.href;
var splitURL = thisURL.split("#");
var photoId = splitURL[1] - 1;


var photoId = (!photoId)? 0 : photoId;


var borderSize = 10;


var photoDir = "photos/bosques zappa/";


var photoArray = new Array(
	
	new Array("1 arbolazo.jpg", "500", "375", "Bosques de Zapallar"),
	new Array("1a tigre.jpg", "500", "375", "Quebrada del Tigre"),
    new Array("1a tigre4.jpg", "500", "375", "Quebrada del Tigre"),
	new Array("1b tigre.jpg", "500", "375", "Bosque denso"),
	new Array("1b tigre2.jpg", "500", "375", "Lianas"),
	new Array("1b tigre6.jpg", "500", "375", "Troncos torcidos y lianas"),
	new Array("1c tigre9.jpg", "500", "375", "Matorrales"),
	new Array("2a puntacerro.jpg", "500", "375", "Cima del cerro"),
	new Array("2aniebla.jpg", "500", "375", "Se acerca la niebla a la cima"),
	new Array("3sender.jpg", "500", "375", "Sendero y juego de lianas"),
	new Array("4figre7.jpg", "500", "375", "Azulillo"),
	new Array("4flores.jpg", "500", "375", "Ajicillo"),
	new Array("4lafa.jpg", "500", "375", "Reptiles del bosque"),
	new Array("4lioaeml.jpg", "500", "375", "Escondido"),
	new Array("4liol.jpg", "500", "375", "Reptiles del bosque"),
	new Array("4tenuis.jpg", "500", "375", "Liolaemus tenuis"),
	new Array("4varana.jpg", "500", "375", "Araņa pollito"),
	new Array("5 jessi la del bosque.jpg", "500", "375", "Entre lianas observando aves"),
	new Array("5brazo.jpg", "500", "375", "Abrazo"),
	new Array("5osq copy.jpg", "500", "375", "Quebrada del Tigre"),
	new Array("arbol.jpg", "500", "375", "Troncos y formas"),
	new Array("arbol3.jpg", "500", "375", "Troncos y formas"),
	new Array("arbolaso.jpg", "500", "375", "Troncos y formas")
	);


var photoNum = photoArray.length;


Object.extend(Element, {
	getWidth: function(element) {
   	element = $(element);
   	return element.offsetWidth; 
	},
	setWidth: function(element,w) {
   	element = $(element);
    	element.style.width = w +"px";
	},
	setHeight: function(element,h) {
   	element = $(element);
    	element.style.height = h +"px";
	},
	setSrc: function(element,src) {
    	element = $(element);
    	element.src = src; 
	},
	setHref: function(element,href) {
    	element = $(element);
    	element.href = href; 
	},
	setInnerHTML: function(element,content) {
		element = $(element);
		element.innerHTML = content;
	}
});



var Slideshow = Class.create();

Slideshow.prototype = {
	initialize: function(photoId) {
		this.photoId = photoId;
		this.photo = 'Photo';
		this.photoBox = 'Container';
		this.prevLink = 'PrevLink';
		this.nextLink = 'NextLink';
		this.captionBox = 'CaptionContainer';
		this.caption = 'Caption';
		this.counter = 'Counter';
		this.loader = 'Loading';
	},
	getCurrentSize: function() {
		
		this.wCur = Element.getWidth(this.photoBox) - borderSize;
		this.hCur = Element.getHeight(this.photoBox) - borderSize;
	},
	getNewSize: function() {
		
		this.wNew = photoArray[photoId][1];
		this.hNew = photoArray[photoId][2];
	},
	getScaleFactor: function() {
		this.getCurrentSize();
		this.getNewSize();
		
		this.xScale = (this.wNew / this.wCur) * 100;
		this.yScale = (this.hNew / this.hCur) * 100;
	},
	setNewPhotoParams: function() {
	
		Element.setSrc(this.photo,photoDir + photoArray[photoId][0]);
		
		Element.setHref(this.prevLink, "#" + (photoId+1));
		Element.setHref(this.nextLink, "#" + (photoId+1));
	},
	setPhotoCaption: function() {
	
		Element.setInnerHTML(this.caption,photoArray[photoId][3]);
		Element.setInnerHTML(this.counter,((photoId+1)+'/'+photoNum));
	},
	resizePhotoBox: function() {
		this.getScaleFactor();
		new Effect.Scale(this.photoBox, this.yScale, {scaleX: false, duration: 0.3, queue: 'front'});
		new Effect.Scale(this.photoBox, this.xScale, {scaleY: false, delay: 0.5, duration: 0.3});
		
		Element.setWidth(this.captionBox,this.wNew-(-borderSize));
	},
	showPhoto: function(){
		new Effect.Fade(this.loader, {delay: 0.5, duration: 0.3});
	
		new Effect.Appear(this.photo, {duration: 0.5, queue: 'end', afterFinish: function(){Element.show('CaptionContainer');Element.show('PrevLink');Element.show('NextLink');}});
	},
	nextPhoto: function(){
		
		(photoId == (photoArray.length - 1)) ? photoId = 0 : photoId++;
		this.initSwap();
	},
	prevPhoto: function(){
		
		(photoId == 0) ? photoId = photoArray.length - 1 : photoId--;
		this.initSwap();
	},
	initSwap: function() {
		
		Element.show(this.loader);
		Element.hide(this.photo);
		Element.hide(this.captionBox);
		Element.hide(this.prevLink);
		Element.hide(this.nextLink);
		
		this.setNewPhotoParams();
		this.resizePhotoBox();
		this.setPhotoCaption();
	}
}


var myrules = {
	'#Photo' : function(element){
		element.onload = function(){
			var myPhoto = new Slideshow(photoId);
			myPhoto.showPhoto();
		}
	},
	'#PrevLink' : function(element){
		element.onmouseover = function(){
			soundManager.play('beep');
		}
		element.onclick = function(){
			var myPhoto = new Slideshow(photoId);
			myPhoto.prevPhoto();
			soundManager.play('select');
		}
	},
	'#NextLink' : function(element){
		element.onmouseover = function(){
			soundManager.play('beep');
		}
		element.onclick = function(){
			var myPhoto = new Slideshow(photoId);
			myPhoto.nextPhoto();
			soundManager.play('select');
		}
	},
	a : function(element){
		element.onfocus = function(){
			this.blur();
		}
	}
};


Behaviour.addLoadEvent(init);
Behaviour.apply();
function init() {
	var myPhoto = new Slideshow(photoId);
	myPhoto.initSwap();
	soundManagerInit();
}