function muestra(eldiv) {

    id1=document.getElementById('barcos');
    id2=document.getElementById('destinos');
    id3=document.getElementById('experiencia');
    id4=document.getElementById ('informacion');
    id5=document.getElementById('contacto');

    id1.style.display="none";
    id2.style.display="none";
    id3.style.display="none";
    id4.style.display="none";
    id5.style.display="none";

    idx=document.getElementById(eldiv);
    idx.style.display="block";
}

function oculta(eldiv) {
    idx=document.getElementById (eldiv);
    idx.style.display="none";
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function estilo(arquivo,styles) {
    document.getElementById (styles).href=arquivo;
}