ment.forms["myForm"]["lname"].value;
if (x==null || x=="")
  {
  alert("Last name must be filled out");
  return false;
  }
  var x=document.forms["myForm"]["user"].value;
if (x==null || x=="")
  {
  alert("Username must be filled out");
  return false;
  }
var x=document.forms["myForm"]["age"].value;
if (x<18)
  {
  alert("You are too young.");
  return false;
  }
else if (x>72)
  {
  alert("You are too old.");
  return false;
  }
}

</script>
</head>

<body>

<!-- ** -1 ** no