browser=navigator.appName;
browserNum=parseInt(navigator.appVersion);


if ((browser == "Netscape") && (browserNum < 5))
	{
		//Netscape 4.x
		layerRef = "document.layers['";
		endLayerRef = "']";
		styleRef = "";
	}
	
	else if ((browser == "Netscape") && (browserNum >= 5))

	{
		//Netscape 6
		layerRef = "document.getElementById('";
		styleRef = ".style";
		endLayerRef = "')";
	}

	else


	{
		// Internet Explorer
		layerRef    = "document.all['";
		endLayerRef = "']";
		styleRef    = ".style";
	}

function showLayer(layerName){	eval(layerRef + layerName + endLayerRef + styleRef + ".visibility='visible'");	}
function hideLayer(layerName){  eval(layerRef + layerName + endLayerRef + styleRef + ".visibility='hidden'");	}







function nmt(){

   browser=navigator.appName;

	if ((browser == "Netscape") && (browserNum < 5))
	{
		document.layers['d'].visibility= "hidden";
	}

	else if ((browser == "Netscape") && (browserNum >= 5))
	{
		document.getElementById('d').style.visibility = 'hidden';	// Netscape 5 e oltre
	}

	else
	{

		document.getElementById('d').style.display = 'none';	// Internet Explorer
	}
}










function mt(){

   browser=navigator.appName;

	if ((browser == "Netscape") && (browserNum < 5))
	{
		document.layers['d'].visibility= "visible";
	}

	else if ((browser == "Netscape") && (browserNum >= 5))
	{
		document.getElementById('d').style.visibility = 'visible';	// Netscape 5 e oltre
	}

	else
	{

	}
}