var ie=(navigator.appName.indexOf("Microsoft")>=0)?1:0

var nn=(navigator.userAgent.indexOf("Gecko")==-1 && 
    navigator.appName.indexOf("Netscape")>=0)?1:0

var nn6=(navigator.userAgent.indexOf("Gecko")>=0 && 
    navigator.appName.indexOf("Netscape")>=0)?1:0
	
function Show(camada) {
  if (nn) document.layers[camada].visibility = "show";
	if (ie) document.all[camada].style.visibility = "visible";
	if (nn6) document.getElementById(camada).style.visibility = "visible";
}

function Hide(camada) {
  if (nn) document.layers[camada].visibility = "hide";
	if (ie) document.all[camada].style.visibility = "hidden";
	if (nn6) document.getElementById(camada).style.visibility = "hidden";
}

function horz(win2)
{var win = window.open( win2, "horizontal","toolbar=no,location=no,status=no,menubar=yes,scrollbars=yes,width=500,height=500,valign=left,resizable=yes" );}

function horzNew(win2)
{var win = window.open( win2, "horizontal","toolbar=no,location=no,status=no,menubar=yes,scrollbars=yes,width=700,height=500,valign=left,resizable=yes" );}

function formulario(win2)
{var win = window.open(win2,"horizontal","toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,width=580,height=470,top=50,left=120,resizable=no");}

function tela_inteira(win2)
{var win = window.open(win2,"horizontal","toolbar=yes,location=no,status=no,menubar=no,scrollbars=yes,width=792,height=504,top=0,left=0,valign=left,resizable=yes");}

function janela(endereco,nome,parametros)
{var win = window.open(endereco,nome,parametros);}

function AdicionaAosFavoritos(){

var endereco="http://www.ie.ufrj.br/"
var descricao="Instituto de Economia da UFRJ"

if (ie) window.external.AddFavorite(endereco,descricao);
if (nn) window.alert("Use CTRL+D para adicionar este site ao seu Favoritos!");
if (nn6) window.alert("Use CTRL+D (maiúsculo) para adicionar este site ao seu Favoritos!");
}