function initSlider(evt) {
	var current = 0;
	var pics = new Array();
	$$('#slider img').each(function(elt) {
		pics.push(new Array(elt.readAttribute('src'), elt.readAttribute('alt')));
		if(pics.length > 1) {
			elt.remove();
		} else {
			/*Element.wrap(elt, 'div');
			elt.up().addClassName('img-wrapper');*/
		}
	});
	$('slider').setStyle({
		backgroundImage: 'url(' + $('slider').down().readAttribute('src') + ')'
	});
	new PeriodicalExecuter(function(pe) {
		current += 1;
		if(current >= pics.length) {
			current = 0;
		}
		$('photo').hide();
		$('photo').src = pics[current][0];
		$('photo').alt = pics[current][1];
		new Effect.Appear('photo', {
			duration: 1.5,
			afterFinish: function(eff) {
				$('slider').setStyle({
					backgroundImage: 'url(' + $('slider').down().readAttribute('src') + ')'
				});
			}
		});
	}, 4);
} // initSlider
Event.observe(window, 'load', initSlider);
Event.observe(document, 'dom:loaded', function(evt) {
	$('visu').wrap('div', { 'id': 'slider' });
	$('slider').insert({ top: '<img src="../images/visu2.jpg" alt="" style="position:absolute" />' });
	$('slider').insert({ top: '<img src="../images/visu3.jpg" alt="" style="position:absolute" />' });
	$('slider').insert({ top: '<img src="../images/visu4.jpg" alt="" style="position:absolute" />' });
	$('slider').insert({ top: '<img src="../images/visu1.jpg" alt="" style="position:absolute" id="photo" />' });
	$('visu').setStyle({ backgroundImage: 'none', position: 'absolute' });
	
});