// mostra o nasconde i div
function toggle(id){
  if (document.getElementById){
    target = document.getElementById(id);
      if (target.style.display == "none"){
        target.style.display = "";
      } else {
        target.style.display = "none";
      }    
  }
}

      
//nascondi
function nascondi( targetId ){
  if (document.getElementById){
    target = document.getElementById( targetId );
        target.style.display = "none";}
}

//mostra
function mostra( targetId ){
  if (document.getElementById){
    target = document.getElementById( targetId );
        target.style.display = "";}
}