function hidediv(hideshow) {
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(hideshow).style.display = 'none';
	}
	else {
	if (document.layers) { // Netscape 4
	document.hideshow.display = 'none';
	}
	else { // IE 4
	document.all.hideshow.style.display = 'none';
	}
	}
	}

	function showdiv(hideshow) {
	if (document.getElementById) { // DOM3 = IE5, NS6
	document.getElementById(hideshow).style.display = 'block';
	//document.getElementById(hideshow).backgroundPosition = 'top';
	
	}
	else {
	if (document.layers) { // Netscape 4
	document.hideshow.display = 'block';
	}
	else { // IE 4
	document.all.hideshow.style.display = 'block';
	}
	}
}

function show(elem){
	hidediv('Presentazione');
	changeClass('clPresentazione','');
	hidediv('Sport');
	changeClass('clSport','');
	hidediv('Servizi');
	changeClass('clServizi','');
	hidediv('Arco');
	changeClass('clArco','');
	hidediv('Lago');
	changeClass('clLago','');
    hidediv('Piazzole');
    changeClass('clPiazzole','');
    hidediv('Bungalow');
    changeClass('clBungalow','');
    hidediv('Piscina');
    changeClass('clPiscina','');
    hidediv('Clienti');
	changeClass('clClienti','');
    hidediv('Campeggio');
	changeClass('clCampeggio','');
    
	showdiv(elem);
	changeClass("cl" + elem,'current');
}