function mostrar()
{
	if(document.all)
	{
		document.all.navigation2.style.visibility = "visible";
	}
	else if(document.layers)
	{
		document.navigation2.visibility = "visible";
	}
	else if(document.getElementById)
	{
		document.getElementById('navigation2').style.visibility = "visible";
	}
}

function esconder()
{
	if(document.all)
	{
		document.all.navigation2.style.visibility = "hidden";
	}
	else if(document.layers)
	{
		document.navigation2.visibility = "hidden";
	}
	else if(document.getElementById)
	{
		document.getElementById('navigation2').style.visibility = "hidden";
	}
}