var images;
var mod;
var oImg = 0;
var nImg = 1;
var transition = 0.5;
var durationBetweenImages = 2000;

function loadSettings() {
	images = $$('#imageviewer img');
	if (images.length > 0) {
		mod = images.length;
		images.each(function(item) { item.style.display = 'none' });
		images[0].style.display = '';
		setInterval("fade()",durationBetweenImages);
	}
}

function fade() {
	images[oImg].fade({duration: transition});
	images[nImg].appear({duration: transition});
	oImg = nImg
	nImg = (nImg+1)%mod; 
}