function mailingListSignup(objId,formURL) {
	var email = document["mailingListSignup"+objId].emailaddress.value;
	if(vIsBlank(email)) {
		alert("Please enter your email address");
	} else if(!vIsEmailAddress(email)) {
		alert("Please enter a valid email address");
	} else {
		document["mailingListSignup"+objId].signupbox_submit.value = "saving...";
		document["mailingListSignup"+objId].signupbox_submit.disabled = true;
		new Ajax.Updater('signupbox'+objId,
			formURL,
			{
				method:'post',
				asynchronous:true,
				evalScripts:true,
				parameters:{objectId: objId, emailaddress: email }
			}
		);
	}
}