function validateMailing () {
	
	var check1 = document.getElementById("email_1").value.toLowerCase();
	var check2 = document.getElementById("email_2").value.toLowerCase();
	var atPos = check1.indexOf("@");
	var dotPos = check1.indexOf(".");
	
	document.getElementById("email_1").value = check1;
	document.getElementById("email_2").value = check2;
	
	if (check1 == "" || check1 == null || atPos<1 || dotPos-atPos<2) {
		alert("You have entered an invalid email address. Please try again.");
		document.getElementById("email_1").focus();
		return false;
	}
		
	if (check1 != check2) {
		alert("You have entered two different email addresses. Please try again.");
		document.getElementById("email_2").focus();
		return false;
	}
	
	document.getElementById("MailingListForm").submit();
}