function confirmUnsubscribe() {
    var response;
    response =  confirm("Are you sure you want to modify your subscription options?");

    if (response) {
        return true;
    }
    else {
        return cancelUnsubscribe();
    }
}	

function cancelUnsubscribe() {
	document.forms[0].action = document.referrer;
	document.forms[0].submit();
	return true;
}