hijaxDefaultAnimations.js

var HijaxDefaultAnimations = new Class({
  initAnimations: function(hijaxMaster) {
    this.hijaxMaster = hijaxMaster;
    this.initOutAnimations();
  },
  hijaxMaster: undefined,
  initOutAnimations: function() {
    this.hijaxMaster.addEvent('animateOut', function() {
      contents = $('content').getChildren();
      // "this" here is not evaluated until inside the event handler -----------v
      contents[0].get('reveal').addEvent('onComplete', this.doneAnimation.bind(this));
      contents.each(function(e){e.get('reveal').dissolve({duration: 1000})});
    }.bind(this));
  },
  doneAnimation: function() {
    // Problem: this here refers to the Fx.Reveal object, instead of the hijaxMaster from initAnimations
    this.hijaxMaster.callChain();
  }
});