function checkSubmit() {
	var myForm = document.form_newsletter;
	if (myForm.sender_email.value.length < 6) {
		alert ("Please provide your e-mail address.");
		myForm.sender_email.focus();
		return false;
	}
	if (myForm.security_code.value.length < 1) {
		alert ("Please fill in the security code.");
		myForm.security_code.focus();
		return false;
	}
	else {
		return true;
	}
} // End function checkSubmit()