var divAtual;

function showHide(id) {
	if (divAtual==id) {
		if (document.getElementById("div"+divAtual).style.display=="none") {
			document.getElementById("div"+divAtual).style.display = "";
		} else {
			document.getElementById("div"+divAtual).style.display = "none";
		}
	} else {
    if (divAtual)
      document.getElementById("div"+divAtual).style.display = "none";
		document.getElementById("div"+id).style.display = "";
		divAtual = id;
	}
}