function mostraLogo(id){
		document.getElementById(id).style.visibility = 'visible';
		switch (id) {
		case "h":
			document.getElementById('cs').style.visibility = 'hidden';
			document.getElementById('p').style.visibility = 'hidden';
			document.getElementById('s').style.visibility = 'hidden';
			document.getElementById('g').style.visibility = 'hidden';
			document.getElementById('co').style.visibility = 'hidden';
		break;
		case "cs": 
			document.getElementById('h').style.visibility = 'hidden';
			document.getElementById('p').style.visibility = 'hidden';
			document.getElementById('s').style.visibility = 'hidden';
			document.getElementById('g').style.visibility = 'hidden';
			document.getElementById('co').style.visibility = 'hidden';
		break;
		case "p": 
			document.getElementById('h').style.visibility = 'hidden';
			document.getElementById('cs').style.visibility = 'hidden';
			document.getElementById('s').style.visibility = 'hidden';
			document.getElementById('g').style.visibility = 'hidden';
			document.getElementById('co').style.visibility = 'hidden';
		break;
		case "s": 
			document.getElementById('h').style.visibility = 'hidden';
			document.getElementById('p').style.visibility = 'hidden';
			document.getElementById('cs').style.visibility = 'hidden';
			document.getElementById('g').style.visibility = 'hidden';
			document.getElementById('co').style.visibility = 'hidden';
		break;
		case "g": 
			document.getElementById('h').style.visibility = 'hidden';
			document.getElementById('p').style.visibility = 'hidden';
			document.getElementById('s').style.visibility = 'hidden';
			document.getElementById('cs').style.visibility = 'hidden';
			document.getElementById('co').style.visibility = 'hidden';
		break;
		case "co": 
			document.getElementById('h').style.visibility = 'hidden';
			document.getElementById('p').style.visibility = 'hidden';
			document.getElementById('s').style.visibility = 'hidden';
			document.getElementById('g').style.visibility = 'hidden';
			document.getElementById('cs').style.visibility = 'hidden';
		break;

		default:
		case "h":
			document.getElementById('cs').style.visibility = 'hidden';
			document.getElementById('p').style.visibility = 'hidden';
			document.getElementById('s').style.visibility = 'hidden';
			document.getElementById('g').style.visibility = 'hidden';
			document.getElementById('co').style.visibility = 'hidden';
		}
		
	}
	
	function avvio(id) {
		mostraLogo(id);
	}
	

   var _gaq = _gaq || [];
  _gaq.push(['_setAccount', 'UA-17571164-1']);
  _gaq.push(['_trackPageview']);

  (function() {
    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
  })();