function checkEmail(email) {
 if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email.toLowerCase())) {
  return true;
 } else {
  return false;
 }
}

function checkSignupForm(object) {
	if (!checkEmail(object.email.value)) { alert("Please enter a valid email address.");object.email.focus();return false; }
	else return true;
}