Douglas crockford's js library coding style (not usable, learning purposes only)

style.js

var ADSAFE;
ADSAFE = (function () {
  "use strict";

  function error(message) {
    ADSAFE.log("ADsafe error: " + (message || "ADsafe violation."));
  }

  return {
    get: function (object, name) {
      reject_global(object);
      if (!reject_property(object, name)) {
        return object[name];
      }
      error();
    },

    //  ADSAFE.isArray returns true if the operand is an array.
    isArray: Array.isArray || function (value) {
      return Object.prototype.toString.apply(value) === "[object Array]";
    },

    log: function log(s) {
      if (window.console) {
        console.log(s);
      } else if (typeof Debug === "object") {
        Debug.writeln(s); /* IE */
      } else {
        opera.postError(s); /* Opera */
      }
    },
    //  ADSAFE._intercept allows the page to register a function that will see the widget's capabilities.
    _intercept: function (f) {
      interceptors.push(f);
    }
  };
}());