window.addEvent('domready', function() {
	
	var photoPrev = $('imgPrev');
	
	if(photoPrev)
	{
		photoPrev.image = photoPrev.getElement('img');
		photoPrev.image.setStyle('opacity', 0);
		photoPrev.setStyle('display', 'block');
		photoPrev.addEvents({
			'mouseenter': function(){ showElement(photoPrev.image) },
			'mouseleave': function(){ hideElement(photoPrev.image)}
		});
	}
	
	var photoNext = $('imgNext');
	if(photoNext)
	{
		photoNext.image = photoNext.getElement('img');
		photoNext.image.setStyle('opacity', 0);
		photoNext.setStyle('display', 'block');
		photoNext.addEvents({
			'mouseenter': function(){ showElement(photoNext.image) },
			'mouseleave': function(){ hideElement(photoNext.image)}
		});
	}
});

function showElement(el)
{
	el.morph({'opacity': 1});
}

function hideElement(el)
{
	el.morph({'opacity': 0});
}