function show_estrutura()
{
	document.getElementById("a_estruturaA").style.visibility = "hidden";
	document.getElementById("a_estruturaA").style.display = "none";
	document.getElementById("a_estruturaB").style.visibility = "visible";
	document.getElementById("a_estruturaB").style.display = "block";
}
function hidden_estrutura()
{
	document.getElementById("a_estruturaB").style.visibility = "hidden";
	document.getElementById("a_estruturaB").style.display = "none";
	document.getElementById("a_estruturaA").style.visibility = "visible";
	document.getElementById("a_estruturaA").style.display = "block";
}
function show_publicacoes()
{
	document.getElementById("a_publicacoesA").style.visibility = "hidden";
	document.getElementById("a_publicacoesA").style.display = "none";
	document.getElementById("a_publicacoesB").style.visibility = "visible";
	document.getElementById("a_publicacoesB").style.display = "block";
}
function hidden_publicacoes()
{
	document.getElementById("a_publicacoesB").style.visibility = "hidden";
	document.getElementById("a_publicacoesB").style.display = "none";
	document.getElementById("a_publicacoesA").style.visibility = "visible";
	document.getElementById("a_publicacoesA").style.display = "block";
}