// JavaScript Document

function showCont(cont_id) {
  
  news = document.getElementById('news-cont');
  events = document.getElementById('events-cont');
  press = document.getElementById('press-cont');
  
  news.style.visibility = "hidden";
  events.style.visibility = "hidden";
  press.style.visibility = "hidden";
      
  obj = document.getElementById(cont_id);
  obj.style.visibility = "visible";
  
  return false; //blocca il link
}

function changeMenuNav(position) {
  menu = document.getElementById('menu-nav-middle');
  if (position == 'news') {
    menu.style.backgroundPosition = "0 0";
  }
  else if (position == 'events') {
    menu.style.backgroundPosition = "0 -32px";
  }
  else if (position == 'press') {
    menu.style.backgroundPosition = "0 -64px";
  }  
}