does json.js means conflicts sys.serialization.javascriptserializer.serialize

i am controlling telerik controls webforms wish serialize vigilant client. given i am removing blunder sys.serialization.javascriptserializer.deserialize i wanted try json. both json and ms library i "sys.application undefined."

has anyone encountered work around?

edit

i am serializing vigilant progenitor page flitting around an justification child window. child window an iframe tag. vigilant used child page, nonetheless i accept blunder i serialize it. vigilant an array objects.