function afficheId(baliseId){
  if (document.getElementById && document.getElementById(baliseId) != null){
    document.getElementById(baliseId).style.visibility='visible';
    document.getElementById(baliseId).style.display='block';
  }
}

function cacheId(baliseId){
  if (document.getElementById && document.getElementById(baliseId) != null){
    document.getElementById(baliseId).style.visibility='hidden';
    document.getElementById(baliseId).style.display='none';
  }
}

function switchId(baliseId){
	if (document.getElementById && document.getElementById(baliseId) != null){
		if(document.getElementById(baliseId).style.display != 'none'){
			document.getElementById(baliseId).style.display = 'none';
		}else{
			document.getElementById(baliseId).style.display = 'block';
		}
  }
}