var fixIE6Vig = function(){

	$$('div.thumb').each(function(thumb){
		var thisSpan = thumb.getElement("span").set('tween',{
			property: 'opacity'
		});
		
		thumb.addEvents({		
			'mouseover': function(event){
				event = new Event(event).stop();
				thisSpan.tween(0,0.7);
			},
			'mouseout': function(event){
				event = new Event(event).stop();
				thisSpan.tween(0);
			}
		});
	});

}

window.addEvent('domready',fixIE6Vig);