function ValidateForm(theForm)
{

  if (theForm.username.value == "")
  {
    alert("Please enter a value for the \"Username\" field.");
    theForm.username.focus();
    return (false);
  }

  if (theForm.password.value == "")
  {
    alert("Please enter a value for the \"Password\" field.");
    theForm.password.focus();
    return (false);
  }

  if (theForm.username.value != "woodall" && theForm.username.value != "citrus") {
  
  alert("Invalid login. Please enter a valid username.");
    theForm.username.focus();
    return (false);
  }

    if (theForm.password.value != "addo" && theForm.password.value != "elephant" ) {
	
    alert("Invalid login. Please enter a valid password ");
    theForm.password.focus();
    return (false);
  }


  return (true);
}