function troca_cor_menu(id){
    document.getElementById(id).style.backgroundColor = '#dfdfdf';
    if (id != 'dw' && id != 'pe'){
        document.getElementById(id).style.borderBottom    = '1px solid #fff';
    }
}
function restaura_cor_menu(id){
    document.getElementById(id).style.backgroundColor = '#ffffff';
    if (id != 'dw' && id != 'pe'){
        document.getElementById(id).style.borderBottom    = '1px dotted #ddd';
    }
}