var opened=1;
	
function open_tab(index){

	if (index!=opened){
		var toggler=$$('.box_apri_chiudi');
		var contenuti=$$('.contenuto');

		
		contenuti[opened-1].set('height',0);
		contenuti[opened-1].setStyle('display','none');

		var apri_btn_html='<p><a href="javascript:open_tab('+(opened)+');">apri</a></p>';
		apri_btn_html+='<a href="javascript:open_tab('+(opened)+');"><img src="img/ico_apri-trans.png" width="40" height="44" alt="" border="0" /></a>';

		var anchor_element=toggler[opened-1].getChildren('.bt_apri');
		anchor_element.set('html',apri_btn_html);
		var myEffect_close = new Fx.Morph(contenuti[opened-1], {duration: 'normal', transition: Fx.Transitions.Sine.easeOut}); 
		myEffect_close.onComplete=function(){
		}
		myEffect_close.start({
			'height': [301,0]
		});


		var chiudi_btn_html='<img src="img/ico_aperto-trans.png" width="40" height="44" alt="" border="0">';
		var anchor_element=toggler[index-1].getChildren('.bt_apri');
		anchor_element.set('html',chiudi_btn_html);
	
		var myEffect_open = new Fx.Morph(contenuti[index-1], {duration: 'normal', transition: Fx.Transitions.Sine.easeOut}); 
		myEffect_open.onComplete=function(){
			opened=index;				
		}
		
		contenuti[index-1].set('height',20);
		contenuti[index-1].setStyle('display','block');
		myEffect_open.start({
			'height': [0,301]
		});
	}
}

window.addEvent('domready', function() {
	var contenuto=$$('.contenuto');

	contenuto[0].set('height',20);
	contenuto[0].setStyle('display','block');

	var myEffect = new Fx.Morph(contenuto[0], {duration: 'normal', transition: Fx.Transitions.Sine.easeOut}); 
	myEffect.start({
		'height': [0,301]
	});
	
	openZoom();
});

function openZoom(){
	var zooms=$$('a.zoom');

	<!--<a href="img/polar_plus/fari_bixeno.jpg" class="zoom"><img src="img/ico_foto-trans.png" width="22" height="17" alt="" border="0"></a></li>-->
	for(var i=0; i<zooms.length; i++){
		zooms[i].addEvent('click',function(event){
			event.stop();
		});
		
		zooms[i].addEvent('mouseover',function(event){
			$('zoomImg').set('html','<img src="'+this.get('href')+'" width="191" height="140" alt="" border="0">');
			$('zoomImg').setStyle('display','block');
			$('zoomImg').setStyle('position','absolute');
			$('zoomImg').setStyle('left',event.client.x - 220);
			$('zoomImg').setStyle('top',event.client.y);
			
			$('zoomImg').setStyle('z-index',100);
		});
		
		zooms[i].addEvent('mouseleave',function(event){
			$('zoomImg').setStyle('display','none');
			$('zoomImg').setStyle('z-index',100);
		});
	}
}