function newsletterSubmit() 
{

if (newsletterForm.firstname.value == "")
  {
    alert("You must enter your first name.");
    return false;
  }

if (newsletterForm.email.value == "")
  {
    alert("You must enter your email address.");
    return false;
  }

if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(newsletterForm.email.value))
	{
	return true;
	}
	else
	{
	  alert("You must enter a valid email address!");
	  return false;
	}
  
}