ajax + crossdomain + proxy

ajax + crossdomain + proxy

Hi folks,

here is the challenge:

we have one server A where the clientbrowser is logged in. Now the server A wants the Client to call a url of another server B wich is not in control of server A and return the content to server A.
The client should be like a proxy between server A and Server B.

Is this possible with jquery?

Thanks for your time.