 = future.onload = function() {
      var id = this.parentNode.id;
      Dz.views[id] = this.contentWindow;
      if (Dz.views.present && Dz.views.future) {
        Dz.postMsg(Dz.views.present, "REGISTER");
        Dz.postMsg(Dz.views.future, "REGISTER");
      }
    }
  }

  Dz.toggleContent = function() {
    if (this.views.remote)
      this.postMsg(this.views.remote, "TOGGLE_CONTENT");
  }
  
  Dz.onhashchange = function() {
    this.loadIframe();
  }
  
  Dz.back = function() {
    this.postMsg(this.vi