function enableCreditCard(){
	document.forms[0].CreditCardNo.disabled=false;
	document.forms[0].CreditCardHolder.disabled=false;
	document.forms[0].CreditCardType.disabled=false;
	document.forms[0].CVC.disabled=false;
	}
function disableCreditCard(){
	document.forms[0].CreditCardNo.disabled=true;
	document.forms[0].CreditCardHolder.disabled=true;
	document.forms[0].CreditCardType.disabled=true;
	document.forms[0].CVC.disabled=true;
	}

function checkEnableES(){
	if (document.forms[0].ExhibitSpace.disabled != false){
		document.forms[0].ExhibitSpace.disabled = false;
		document.forms[0].ExhibitSpace.focus();
	} else {
		document.forms[0].ExhibitSpace.disabled = true;
	}
}

function checkEnableRS(){
	if (document.forms[0].ReserveSpace.disabled != false){
		document.forms[0].ReserveSpace.disabled = false;
		document.forms[0].ReserveSpace.focus();
	} else {
		document.forms[0].ReserveSpace.disabled = true;
		document.forms[0].ReserveSpace.defaultValue = "none";
	}
}