function fechar(idul, idlink){
document.getElementById(idul).style.display = 'none';
document.getElementById(idlink).href = "javascript: abrir('"+idul+"','"+idlink+"');";
}

function abrir(idul, idlink){
document.getElementById(idul).style.display = 'block';
document.getElementById(idlink).href = "javascript: fechar('"+idul+"','"+idlink+"');";
setTimeout ("fechar()", 3000);
}