function editInput(element, txt){
  if(element.value == txt){
    element.value = "";
    element.style.color = "black";
  }
  return;
}

function noEditInput(element, txt){
  if(element.value == ""){
    element.value = txt;
    element.style.color = "gray";
  }
  return;
}

function editPass(element, txt){
  element.type = "password";
  element.value = "";
  element.size = 20;
  element.focus();
}

function noEditPass(element, txt){
  if(element.value == ""){
    element.type = "text";
    element.value = txt;
  }
}

function checkLogin(){
  if((document.getElementById('idUser').value !== "Usuario") && (document.getElementById('idPass').value !== "Clave"))
    document.getElementById('idFrm').submit();
  else
    alert("Error: Por favor ingrese Usuario y Clave para continuar");
}

function logout(){
  document.getElementById('idFrame').src = "logout.php";
  document.location = "login.php";
}