var images = new Array();
var index=0;
var myImageElem = null;
var imgNameElem = null;
var width;
var height;
var width_default = 640;
var height_default = 480;
var base;

var i = 0;
function switchTo(name) {
	myImageElem.src = 'black.jpg';
	parse(name);
	myImageElem.width = width;
	myImageElem.height = height;
	window.resizeTo(parseInt(width)+12, parseInt(height)+60);
	myImageElem.src = name;
	imgNameElem.innerHTML=base;
}

function start() {
	index = 0;
	myImageElem = document.getElementById("myImage");
	imgNameElem = document.getElementById("imgName");
	switchTo(images[index]);
}

function next() {
	index++;
	if (index >= images.length) {
		index = 0;
	}
	switchTo(images[index]);
}

function prev() {
	index--;
	if (index < 0) {
		index = images.length - 1;
	}
	switchTo(images[index]);
}

function parse(name) {
	var wx = 1 + name.lastIndexOf('_');
	var hx = 1 + name.lastIndexOf('x');
	var dx = name.lastIndexOf('.');
	width = name.substring(wx, hx - 1);
	height = name.substring(hx, dx);
	base = name.substring(0, wx - 1);
	//alert('width=' + width + ' height=' + height + ' base=' + base);
}

function launch(folder) {
	var url = folder + '/index.html';
	var _slides = window.open(url, "_slides", "width=640,height=480,resizable");
	_slides.focus();
	
}