function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}


function Payment() {
	
	var thePaymentTypeID = document.getElementById('PaymentTypeID');
	var theCreditCardTypeID = document.getElementById('CreditCardTypeID');
	var bname = document.getElementById('bname'); 
	var cardnumber = document.getElementById('cardnumber');
	var expmonth = document.getElementById('expmonth');
	var expyear = document.getElementById('expyear');
	var baddr1 = document.getElementById('baddr1');
	var bcity = document.getElementById('bcity');
	var bstate = document.getElementById('bstate');
	var bzip = document.getElementById('bzip');
	var bcountry = document.getElementById('bcountry');
	var Expires = document.getElementById('Expires');

	if (getCheckedValue(thePaymentTypeID)==4) {
		bname.disabled=false;
		cardnumber.disabled=false;
		expmonth.disabled=false;	
		expyear.disabled=false;	
		baddr1.disabled=false;
		bcity.disabled=false;
		bstate.disabled=false;	
		bzip.disabled=false;
		bcountry.disabled=false;	
		Expires.disabled=false;
		theCreditCardTypeID.disabled=false;			
	}
	
	else {
		bname.value='';
		cardnumber.value='';
		expmonth.value='';	
		expyear.value='';	
		baddr1.value='';
		bcity.value='';
		bstate.value='';	
		bzip.value='';
		bcountry.value='';	
		Expires.value='';
		
		bname.disabled=true;
		cardnumber.disabled=true;
		expmonth.disabled=true;	
		expyear.disabled=true;	
		baddr1.disabled=true;
		bcity.disabled=true;	
		bstate.disabled=true;
		bzip.disabled=true;
		bcountry.disabled=true;	
		Expires.disabled=true;
		theCreditCardTypeID.disabled=true;	
	}
}