code: function(path, options) {
      var cacheBust = options == null || options && options.cacheBust === true;
      if (cacheBust) {
        return (path.indexOf("?") === -1 ? "?" : "&") + "noCache=" + _now();
      } else {
        return "";
      }
    }
docs: Will look at a path, and will create a "?noCache={time}" or "&noCache={time}"
  query param string to return. Does NOT append that string to the original path.
  This is useful because ExternalInterface often breaks when a Flash SWF is cached.
  
  @returns The `noCache` query param with necessary "?"/"&" prefix.
  @private