gistfile1.js

(function () {

  // I'm in teh global scopes, technically.
  // But I won't leak my juices into everyone else.
  var root = this,
      document = root.document || null
  
  if (typeof document === 'undefined') {
    return throw new Exception('Bitch please, we need to be in the browser')
  }
  
  // Allow easier use of getElementById
  var getElementById = function (id) { return document.getElementById(id); };

}).call(this)