function submit_cc_signup() {
	if (isValidEmail(document.getElementById("request_email").value)) {
		document.cc_signup.submit();
	} else {
		alert('Please enter a valid email address!');
	}
}
function isValidEmail(email){
	var re = "^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$";
	return email.match(re);
}