Chain + Events in the same class?

[stratboy]

Hi, It seems that if I implement Chain AND Events in the same class,
Chain doesn't work anymore.
For exemple the class below works properly, but as soon as I add
Implements:Events, the chain methods don't work anymore. I need Events
because I want to fire out an event when the last fx of the chain is
complete.
I think i'm doing something wrong implementing the Events, so, can you
help me please?

////////////////////////////////////////

var Switcher = new Class({

        Implements:Chain,
        Implements:Events,

        initialize:function(){

                this.elem1 = null;
                this.elem2 = null;
                this.currentElement = null;

        },

        switchElements:function(elem1,elem2){

                this.elem1 = $(elem1);
                this.elem2 = (elem2) ? $(elem2) : null;

                if(!elem2){
                        this.elem1.set('tween',{ link:'chain' });
                        this.showElement1(this.elem1);
                }

                else{
                        this.clearChain();

                        this.elem1.set('tween',{ link:'chain' });
                        this.elem2.set('tween',{ link:'chain', 
onComplete:function()
{ this.callChain(); }.bindWithEvent(this) });

                        this.chain(
                                function(){ this.fadeElement2(); },
                                function(){ this.hideElement2(); },
                                function(){ this.showElement1(); }
                        );

                        this.callChain();
                }
        },

        showElement1:function(){
        
this.elem1.setStyles({ 'opacity':'0','display':'block' }).tween('opacity',
1);
        },

        fadeElement2:function(){
                this.elem2.tween('opacity',0);
        },

        hideElement2:function(){
                this.elem2.setStyles({'display':'none'});
                this.callChain();
        }

        ///////
});