function montre(id) 
{
  if (document.getElementById) 
  {
	document.getElementById(id).style.display="block";
  } 
  else if (document.all) 
  {
	document.all[id].style.display="block";
  } 
  else if (document.layers) 
  {
	document.layers[id].display="block";
  }
}

function cache(id) 
{
  if (document.getElementById) 
  {
 	document.getElementById(id).style.display="none";
  } 
  else if (document.all) 
  {
	document.all[id].style.display="none";
  } 
  else if (document.layers) 
  {
	document.layers[id].display="none";
  }
}