function calcEmailFreq() {
	if ($('email_freq_calc') != undefined) {
		$('email_freq_calc').innerHTML = '';
		var $number = $('billing_freq_email').value;
		if ($('billing_freq_email').value == '') $number = '0';
		new Ajax.Updater('email_freq_calc','/home/email_freq/'+$number, {onLoading:function(request){Element.show('spin_email_freq')}, onComplete:function(request){Element.hide('spin_email_freq');}, asynchronous:true, evalScripts:true});
	}
}

function calcPostalFreq() {
	$('postal_freq_calc').innerHTML = '';
	var $number = $('billing_freq_postal').value
	if ($('billing_freq_postal').value == '') $number = '0';
	new Ajax.Updater('postal_freq_calc','/home/postal_freq/'+$number, {onLoading:function(request){Element.show('spin_postal_freq')}, onComplete:function(request){Element.hide('spin_postal_freq');}, asynchronous:true, evalScripts:true});
}