// Mostra e Nascondi elementi del documento
<!--
function mostra(object) {
if (document.layers && document.layers[object] != null)
document.layers[object].visibility = 'visible';
else if (document.all)
document.all[object].style.visibility = 'visible';
else if(document.getElementById){
  LiveMenu = document.getElementById(object);
if((LiveMenu.style)&&(LiveMenu.style.visibility!=null))
  LiveMenu.style.visibility = 'visible';
}
}

function nascondi(object) {
if (document.layers && document.layers[object] != null)
document.layers[object].visibility = 'hidden';
else if (document.all)
document.all[object].style.visibility = 'hidden';
else if(document.getElementById){
  LiveMenu = document.getElementById(object);
if((LiveMenu.style)&&(LiveMenu.style.visibility!=null))
  LiveMenu.style.visibility = 'hidden';
}
}

function mnINT(object)		//interruttore: se visibile nasconde e viceversa
{
    if  (document.layers) {   
		if  (document.layers && document.layers[object] != null) {
			switch (document.layers[object].visibility) {	
				case 'hidden':
				document.layers[object].visibility = 'visible';
				break
				case 'visible':
				document.layers[object].visibility = 'hidden';
				break
			}
		}
    }
    else 
    if  (document.all)	{ 
		switch (document.all[object].style.visibility) { 
			case 'hidden': 
			document.all[object].style.visibility = 'visible';
			break
			case 'visible':
			document.all[object].style.visibility = 'hidden';
			break
		}
	}
	else 
	if	(document.getElementById){
  	LiveMenu = document.getElementById(object);
	if((LiveMenu.style)&&(LiveMenu.style.visibility!=null))	{
  		switch (LiveMenu.style.visibility) {
			case 'hidden':
			LiveMenu.style.visibility = 'visible';
			break
			case 'visible':
			LiveMenu.style.visibility = 'hidden';
			break
			}
		}
	}
}
//-->