Node.JS static file web server. Put it in your path to fire up servers in any directory, takes an optional port argument.

static_server.js

var http = require('http'),
    url  = require('url'),
    path = require('path'),
    fs   = require('fs'),
    mime = require('mime'),
    port = process.argv[2] || 8888;

http.createServer(function(req, res) {

  var uri = url.parse(req.url).pathname,
      filename = path.join(process.cwd() + __dirname, uri);
  
  path.exists(filename, function(exists) {
    if (!exists) {
      res.writeHead(404, {'Content-Type': 'text/plain'});
      res.write('404 Not Found\n');
      res.end();
      return;
    }

    if (fs.statSync(filename).isDirectory()) {
      filename += '/index.html';
    }

    fs.readFile(filename, 'binary', function(err, file) {
      if (err) {        
        res.writeHead(500, {'Content-Type': 'text/plain'});
        res.write(err + '\n');
        res.end();
        return;
      }

      res.writeHead(200, {'Content-Type': mime.lookup(filename)});
      res.write(file, 'binary');
      res.end();
    });
  });
}).listen(parseInt(port, 10));

console.log('Static file server running at\n  => http://localhost:' + port + '/\nCTRL + C to shutdown');