function MostraAjuda(layer) {
 if (document.getElementById(layer).style.paddingLeft == "10px") {
  if (document.all) { document.getElementById(layer).style.display = "none"; }
  document.getElementById(layer).innerHTML = "";
  document.getElementById(layer).style.padding = "0px"
 }
 else {
  document.getElementById(layer).style.padding = "10px"
  document.getElementById(layer).innerHTML = document.getElementById("t_" + layer).innerHTML;
  if (document.all) { document.getElementById(layer).style.display = "block"; }
 }
}