var RADIO_OFFERS = {
    'download2' : {aId:1366,cId:10162681,persist:true},
	'download4' : {aId:1366,cId:10162682,persist:true},
	'download5' : {aId:1366,cId:10162683,persist:true},
	'download8' : {aId:1366,cId:10162684,persist:true}
};

function radioValue (radioGroup) {
    if (radioGroup)
    {
        for (var i = 0; i < radioGroup.length; i++)
        {
            if (radioGroup[i].checked)
            {
                var retVal = radioGroup[i].value;
                radioGroup = null;
                return retVal;
            }
        }
    }
    return null;
};

function radioSelect (formRef) {
    var radios = formRef;
    var value = radioValue(radios);
    if (value === null) {
        alert("Please select a package.");
    }
    var initHash = RADIO_OFFERS[value];
    if (initHash) {
        TSPurchase.load(initHash);
    }
}