// image viewer
var play_btn = document.getElementById('play');
var currentPic = 1;
var status = "pause";
var pics = Array();

function showPic(nr)
{	
	currentPic = nr;
	document.getElementById('placeholder').src = '/uploads/' + pics[nr];
	return false;
}

function nextPic(dir)
{
	currentPic += dir;
	if (currentPic<0) currentPic = pics.length-1;
	if (currentPic==pics.length) currentPic = 0;				
	showPic(currentPic);
}

function start()
{
	if (status=="play") return;
	status = "play";
	tick();					
	play_btn.style.backgroundPosition="-161px -21px";
}

function pause()
{
	status = "pause";
	play_btn.style.backgroundPosition="-161px 0px";
}

function tick()
{
	if (status!="play") return;
	nextPic(1);
	timing = document.getElementById('delay').value * 1000;
	setTimeout("tick()", timing);
}