var ColleagueTextField = function (elm) {
  //Object.extend(this, Colleague);
  this.element = elm;
  this.mediator;

  this.setMediator = function (med) {
    this.mediator = med;
    Event.observe(this.element, 'keyup', this.receiveKeyUp.bind(this), true);
  }

  this.setColleagueEnabled = function (bool) {
    this.element.disabled = !bool;
  }

  this.receiveKeyUp = function (ev) {
    (this.mediator.colleagueChanged.bind(this.mediator))(ev);
    return true;
  }

  this.getText = function () {
    return this.element.value;
  }
}