function getId(t) {
		var obj = document.all ? document.all[t] : document.getElementById(t);
		return obj;
	}
function changeReferral() {
	var ReferralObj = document.forms.joinForm.referralId;
	if (ReferralObj.value=='') {
		getId('referralOtherError').style.display='';
		getId('referralOtherRow').style.display='';
	}
	else {
		getId('referralOtherError').style.display='none';
		getId('referralOtherRow').style.display='none';
	}
}