// -------------------------------------------------------------------------------------------------
var mac = (navigator.userAgent.indexOf("Mac") != -1);
var browserName = navigator.appName;
var browserVer = parseInt(navigator.appVersion);
var ie4 = (browserName == "Microsoft Internet Explorer") && navigator.appVersion.indexOf('MSIE 4')>0;
var ie5 = (browserName == "Microsoft Internet Explorer") && navigator.appVersion.indexOf('MSIE 5')>0;
var ie6 = (browserName == "Microsoft Internet Explorer") && navigator.appVersion.indexOf('MSIE 6')>0;
var ie = (browserName == "Microsoft Internet Explorer");
var ns = (browserName == "Netscape" && browserVer <6 && navigator.vendor != "Netscape6");

function show(spot){
	if(ns && document.layers[spot]){

		document.layers[news].visibility = 'hidden';
		document.layers[online].visibility = 'hidden';
		document.layers[profilo].visibility = 'hidden';
		document.layers[servizi].visibility = 'hidden';


		document.layers[spot].visibility = 'show';
	}
	else if(ie || ns6){

		document.getElementById('news').style.visibility = 'hidden';
		document.getElementById('online').style.visibility = 'hidden';
		document.getElementById('profilo').style.visibility = 'hidden';
		document.getElementById('servizi').style.visibility = 'hidden';



		document.getElementById(spot).style.visibility = 'visible';
	}
}

function hide(spot){
	if(ns && document.layers[spot]){
		document.layers[spot].visibility = 'hide';
	}
	else if(ie || ns6){
		document.getElementById(spot).style.visibility = 'hidden';
	}
}
// -------------------------------------------------------------------------------------------------