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";
    } }