function showHideSection(evt){
    divDicas = document.getElementById('dicas');
    divReviews = document.getElementById('reviews');
    divNoticias = document.getElementById('noticias');
    divAbaDicas = document.getElementById('aba-dicas');
    divAbaReviews = document.getElementById('aba-reviews');
    divAbaNoticias = document.getElementById('aba-noticias');
    if (evt == 'dicas') {
        divAbaDicas.className = "aba-dicas-on";
        divDicas.style.display = "block";
    } else {
        divAbaDicas.className = "aba-dicas-off";
        divDicas.style.display = "none";
    }
    if (evt == 'reviews') {
        divAbaReviews.className = "aba-reviews-on";
        divReviews.style.display = "block";
    } else {
        divAbaReviews.className = "aba-reviews-off";
        divReviews.style.display = "none";
    }
    if (evt == 'noticias') {
        divAbaNoticias.className = "aba-noticias-on";
        divNoticias.style.display = "block";
    } else {
        divAbaNoticias.className = "aba-noticias-off";
        divNoticias.style.display = "none";
    }
}