Is it possible to use a proxy with Ajax?
===

I want to know if I can use a proxy with a javascript ajax call, either with jQuery or standard javascript.

Maybe something like this:

    var ajax = new Ajax({
        proxy:'123.123.123.1:8080',
        proxyUsername:'myUsername',
        proxyPassword:'myPassword',
        ...etc
    });

The purpose is to download a file from a third party while faking the users IP address.