For instance, let's say I have something like this, a simple http proxy server:

var http = require('http');
var url = require('url');
var request = require('request');

http.createServer(onRequest).listen(3000);

function onRequest(req, res) {

    var queryData = url.parse(req.url, true).query;
    if (queryData.url) {
        request({
            url: queryData.url
        }).on('error', function(e) {
            res.end(e);
        }).pipe(res);
    }
    else {
        res.end("no url found");
    }
}

But when you put http://www.example.com through it, while the base HTML is proxied perfectly, any javascript, images, or general assets, say http://www.example.com/public/ba.png are processed as normal by the browser. How is it possible to go about re-writing every url to become http://proxy.com/?url=http://www.example.com/public/ba.png?