A probably evil hack to get working super in any function.

superhack.js

  // Add a handy super call for all objects
  MyBaseClass.prototype.super = function () {
    var parent = this.__proto__.__proto__;
    var caller = arguments.callee.caller;
    var fn;
    if (caller.prototype === this.__proto__) {
      fn = parent.constructor;
    } else {
      // This is probably quite slow, but it doesn't seem to affect
      // performance too much in real tests.
      var proto = this.__proto__;
      Object.keys(proto).forEach(function (name) {
        if (proto[name] === caller) {
          fn = parent[name];
        }
      });
    }
    return fn.apply(this, arguments);
  };

  MyBaseClass.adopt = function (child) {
    child.__proto__ = this;
    child.prototype.__proto__ = this.prototype;
  };