var madeVisible=new Array();

/*function show(){
  var a=show.arguments;
  if(a[a.length-1]==1){a[a.length-1]="ultima";}
  else{a[a.length]="ultimo";}
  for(i=0; i<a.length+1; i++){
    document.getElementById(a[i]).style.visibility = "visible";
    madeVisible[madeVisible.length] = a[i];
  }
}*/

function show(){
  var a=show.arguments;
  for(i=0; i<a.length; i++){
    document.getElementById(a[i]).style.visibility = "visible";
    madeVisible[madeVisible.length] = a[i];
  }
  document.getElementById("ultimo").style.visibility = "visible";
}

function hide(){
  for(i=madeVisible.length-1; i>=0; i--){
    document.getElementById(madeVisible[i]).style.visibility = "hidden";
    madeVisible.length = madeVisible.length-1;
  }
  document.getElementById("ultimo").style.visibility = "hidden";
}

function show2(){
  var a=show2.arguments;
  for(i=0; i<a.length; i++){
    document.getElementById(a[i]).style.visibility = "visible";
    madeVisible[madeVisible.length] = a[i];
  }
  document.getElementById("ultima").style.visibility = "visible";
}

function hide2(){
  for(i=madeVisible.length-1; i>=0; i--){
    document.getElementById(madeVisible[i]).style.visibility = "hidden";
    madeVisible.length = madeVisible.length-1;
  }
  document.getElementById("ultima").style.visibility = "hidden";
}