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

  this.setMediator = function (med) {
    this.mediator = med;
    Event.observe(this.element, 'click', this.mediator.actionPerformed.bind(this.mediator), false);
  }

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