var Ticker = new Class({
    Implements: Options,
    options: {
        speed: 1500,
        delay: 5000,
        direction: 'vertical',
        onComplete: Class.empty,
        onStart: Class.empty
    },
    initialize: function(el, options) {
        this.setOptions(options);
        this.el = $(el);
        this.items = this.el.getElements('li');
        var w = 0;
        var h = 0;
        if (this.options.direction.toLowerCase() == 'horizontal') {
            h = this.el.getSize().y;
            this.items.each(function(li, index) {
                w += li.getSize().x;
            });
        } else {
            w = this.el.getSize().x;
            this.items.each(function(li, index) {
                h += li.getSize().y;
            });
        }
        this.el.setStyles({
            position: 'absolute',
            top: 0,
            left: 0,
            width: w,
            height: h
        });
        this.fx = new Fx.Morph(this.el, { duration: this.options.speed, onComplete: function() {
            var i = (this.current == 0) ? this.items.length : this.current;
            this.items[i - 1].injectInside(this.el);
            this.el.setStyles({
                left: 0,
                top: 0
            });
        } .bind(this)
        });
        this.current = 0;
        this.next();
    },

    pause: function() {
        $clear(mytimer);
        mytimer = null;
    },
    resume: function() {
        if (mytimer == null) {
            this.next();
        }
    },
    next: function() {
        this.current++;
        if (this.current >= this.items.length) this.current = 0;
        var pos = this.items[this.current];
        this.fx.start({
            top: -pos.offsetTop,
            left: -pos.offsetLeft
        });
        mytimer = this.next.bind(this).delay(this.options.delay + this.options.speed);
    }
});

var mytimer = null;