var videooglasi = new Array;
var currentImage = 0;
var timer;
var opacity = -10;
var opacityTimer;
var image;

function rotateImage(increment) {
	unselectItem(currentImage);
	if (increment == null)
		increment = true;
		
	if (increment){
		currentImage++;
		if (currentImage >= videooglasi.length)
			currentImage = 0;
	} else {
		currentImage--;
		if (currentImage < 0)
			currentImage = videooglasi.length - 1;
	}
	changeImageIn(currentImage);
	timer = setTimeout("rotateImage()", 5000);
}
function changeImageIn(n) {
	clearTimeout(timer);
	unselectItem(currentImage);
	currentImage = n;
	
	var info = videooglasi[n].info;
	var link_a = document.getElementById('link_a');
	link_a.href = videooglasi[n].link;
	if (image == null)
		image = document.getElementById('video_thumbnail');
	image.src = videooglasi[n].image;
	
	opacity = -10;
	updateOpacity();
	var item = document.getElementById('playlist-item' + n);
	item.style.display = "block";
	
	document.getElementById('play_video').href = videooglasi[n].link;
	document.getElementById('current_image_id').innerHTML = currentImage + 1;
}

function updateOpacity(){
	opacity += 10;
	image.style.opacity = opacity/100;
	image.style.filter = 'alpha(opacity=' + opacity + ')';
	if (opacity == 100){
		clearTimeout(opacityTimer);
	} else
	{
		opacityTimer = setTimeout("updateOpacity()", 100);
	}
}
 
function changeImageOut(n) {
	timer = setTimeout("rotateImage()", 5000);
}

function unselectItem(n){
	var item = document.getElementById('playlist-item' + n);
	item.style.display = "none";
}