Anyone fix the preview issue?

var router = require('./router.js');
//Problem: We need a simple way to look at a user's badge count and JavaScript points from a web browser
//Solution: use Node.js to perform the profile look ups and serve our templates via HTTP

//Create a web server
var http = require('http');
http.createServer(function(request, response){
  router.home(request, response);
  router.user(request, response);
}).listen(3000);
console.log('Server running at http://<workspace-url>/');

//Handle HTTP route GET / and POST / i.e. Home
function home(request, response){
  //if url is == "/" && GET
  if(request.url === "/"){
    //show search
    response.writeHead(200, {'Content-Type': 'text/plain'});  
    response.end('Header\n');
    response.end(username + '\n');
    response.end('Footer\n');
  }
  //if url == "/" && POST
    //redirect to /:username
}


//Handle the HTTP route for GET /:username i.e. /chalkers
function user(request, response){
  //if url == "/..."
  var username = request.url.replace("/", "");
  if (username.length > 0){   
    //get JSON from Treehouse
      //on "end"
        //show profile
      //on "error"
        //show error
  }
}