/* apro la popup */
function gallery(div_id, data, title, testo ) {
	$('data').update(data);
	$('titoloz').update(title);
	$('testoz').update(testo);
	

	
	
	/*_testo=document.createElement('div');
	_testo= $(te);
	$('testoz').appendChild(_testo);*/


	var gal = document.getElementById(div_id);
	x=gal.style.display;
	if (x=='none') new Effect.Appear(div_id, { duration: 0.5 });
	

	/* calcolo i margini del div x centrarlo */
	var w = (gal.getWidth())/2;
	var h = (gal.getHeight())/2;
	gal.style.margin='-'+h+'px 0 0 -'+w+'px';
	
	/*console.log('-'+h+'px 0 0 -'+w+'px')
	console.log(gal.getWidth());*/
}


/* chiudo la popup */
function chiudi(div_id){
	new Effect.Parallel(
		[
			new Effect.Opacity(div_id, {sync: true, duration:0.5, from:1.0, to:0.0})
		],

		{	duration: 0.5, 
			afterFinish: function(effect){
				var cl = document.getElementById(div_id);
				cl.style.display='none';
			} 
		}
	);
};