var _photos;
var _index = 0;
var _timer = 5000;
var _empty = "";

function book(v) {
	
	// get photos
	$.ajax({
        type: "POST",
        url: "/assets/php/classes/book.class.php",
		data:"f=getPhotos&dir=/assets/img/jpg/books/"+v+"&",
        success: function(response) {
			_photos = response.split(",");
			display();
		},
        error: function() {}
    });

}

function display() {
	
	$('#gallery #slide').fadeOut(350, resize);

}

function resize() {

	var data = current();
	var left = -1 * data[1] / 2;
	
	var book = parseInt($('#book').css('width'));
	var right = parseInt(book - parseInt(data[1])) / 2;
	
	var _width = parseInt(data[1]);
	var _height = parseInt(data[2]);
	
	$('#gallery').stop().animate({width:_width, height:_height/*, marginLeft:left*/}, 350, load);
	$('#gallery #loader').fadeIn(350);
	
}

function load() {
	
	var data = current();
	$('#gallery #slide').html('<img src="'+data[0]+'" width="'+data[1]+'" height="'+data[2]+'" onload="show();" />');

}

function show() {
	
	$('#gallery #loader').fadeOut(350);
	$('#gallery #slide').fadeIn(650);

}

function current() {
	
	var photo = _photos[_index];
	var info = photo.split("&");
	return info;

}

function next() {
	
	_index++;
	
	if( _index >= _photos.length ) {
		_index = 0;
	}
	
	display();
	
}

function prev() {
	
	_index--;
	
	if( _index < 0 ) {
		_index = _photos.length - 1;
	}
	
	display();

}