function checkForm(){
	if (isFieldEmpty(form.name, "Please enter your name")){ return false; }
	if (isFieldEmpty(form.email, "Please enter your email")){ return false; }
	if (isInvalidField(form.email, "Please enter a valid email address", "email")){ return false; }
	if (isFieldEmpty(form.comment, "Please enter a message")){ return false; }
	return true;
}