Calls thru Browser , Flash+RTP

Hi , We are looking for a hosted inbound call center solution where we should be able to receive call thru browser . The call scenario will be in 2 ways . 1. A customer can use a click2call button on our website and we receive the call on our browser and customer communicates with ur thru browser . Browser -----> Browser 2. A customer calls a DID number and we receive the call on our Browser . DID ---> Browser . It should be easy to integrate on any website and should be Jscript based and also the call should be able to be transfered to browser to any other call center agent who logged in . The Bidder should sign an NDA and a contract to provide support and we do not provide any prepayment until we decide abt milestones . Should be multi agent and reseller options available . Thanks