function mudaConteudo(canal, selecao){
	document.getElementById("abaSel").id = "";
	selecao.id = "abaSel";
	if (canal == "seminario") {
	document.getElementById("seminario").style.display = "block";
	}
	else {
	document.getElementById("seminario").style.display = "none";
	}
	if (canal == "palestra") {
	document.getElementById("palestra").style.display = "block";
	}
	else {
	document.getElementById("palestra").style.display = "none";
	}
	if (canal == "encontro") {
	document.getElementById("encontro").style.display = "block";
	}
	else {
	document.getElementById("encontro").style.display = "none";
	}
	if (canal == "outrasdatas") {
	document.getElementById("outrasdatas").style.display = "block";
	}
	else {
	document.getElementById("outrasdatas").style.display = "none";
	}
}