/** Author Keishi Takashima**/
document.observe("dom:loaded", function() {				
	$$('.thumb-div').invoke('observe', 'mouseenter',function(){  showTitle(this)}).invoke('observe', 'mouseleave', function(){ hideTitle(this)});
});


function showTitle(divElem){
	var queue = Effect.Queues.get('anime');
	queue.each(function(effect) { effect.cancel(); });
	var imgElem = divElem.down('IMG');
	var caption = divElem.down('.caption');	
	new Effect.Opacity(imgElem, { from: 1.0, to: 0.25, duration: 0.5, queue: { position: 'end', scope: 'anime', limit: 2 }});
	if(caption)
		caption.show();	
}

function hideTitle(divElem){
	var queue = Effect.Queues.get('anime');
	queue.each(function(effect) { effect.cancel(); });
	var imgElem = divElem.down('IMG');
	var opacity = imgElem.getStyle('opacity');
	new Effect.Opacity(imgElem, { from: opacity, to: 1, duration: 0.5});
	var caption = divElem.down('.caption');
	if(caption)
		caption.hide();
}