function showFoto(id) {
	$$('#gallery .grandi li').invoke('hide');
	$(id).show();
}

function sinistra (id,num) {
	position = parseInt( $(id).getStyle('left') );
	if (position<0) new Effect.Move($(id), { x: num }); 
}

function destra (id,num) {

	position = parseInt( $(id).getStyle('left') );
	if(isNaN(position)) position = 0;
	mas = 0-parseInt( $(id).getStyle('width') );
	if (position>(mas+num)) new Effect.Move($(id), { x: 0-num }); 

}

function su (id,num) {
	position = parseInt( $(id).getStyle('top') );
	if (position<0) new Effect.Move($(id), { y: num }); 

}

function giu (id,num) {
	position = parseInt( $(id).getStyle('top') );
	if(isNaN(position)) position = 0;
	mas = 0-parseInt( $(id).getStyle('height') );
	if (position>(mas+num)) new Effect.Move($(id), { y: 0-num }); 

}

function showVideo(id) {
	$('ytvideo').update('<object width="395" height="344"><param name="movie" value="http://www.youtube.com/v/'+id+'&hl=it&fs=1&autoplay=1&loop=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/'+id+'&hl=it&fs=1&autoplay=1&loop=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="395" height="344"></embed></object>');
}

function showTestocol(id) {
	$$('ul#testocol li').invoke('removeClassName','active');
	$('testo_'+id).addClassName('active');
	initScrollLayer();
	
}