Mine

<script type="text/javascript">
	window.addEvent('domready', function() {
		$$('#popupmenu li a').each(function(el) {
			el.addEvent('click', function() {
				if($('popup').getStyle('opacity') == 1){
					$('popup').setOpacity(0).setStyle('display', 'block').effects({duration:3000}).start({'opacity': 0.9});
				}else{
				if($('popup').getStyle('opacity') > 0){
					$('popup').setOpacity(0.9).setStyle('display', 'block').effects({duration:3000}).start({'opacity': 0});
				}
				else
				{
					$('popup').setOpacity(0).setStyle('display', 'block').effects({duration:3000}).start({'opacity': 0.9});
				} 
				}
			});
		});
		var processImage = function (request){
			alert('hey');
			//alert(request.responseText);
		}
		$('pictures').setStyle('width',$$('#fotolist #pictures img').length * 67+"px");
		$$('#fotolist #pictures img').setStyle('opacity','0.5');
		$$('#fotolist #pictures img').each(function(element,index){
		                element.addEvents({
		                        'mouseover' : function(){ element.setStyle('opacity', '1'); },
		                        'mouseout' : function(){ element.setStyle('opacity', '0.5'); },
		                        'click' : function(){ 
									var myXHR = new XHR({method: 'get', onSucces: processImage }).send('http://localhost/adproductions/gallery.xml', '');
									$('largeimg').setProperty('src',element.getProperty('name'));
								}
		                });
		        });
		var s = new Scroller('fotolist');
		s.start();
	});
	//$$('#popupmenu a').
	</script>