var Ticker = new Class({
    setOptions: function(options) {
        this.options = Object.extend({
            speed: 1500,
            delay: 5000,
            direction: 'vertical',
            onComplete: Class.empty,
            onStart: Class.empty
        }, options || {});
    },
    initialize: function(el, options) {
        //debugger;
        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.Tween(this.el, { duration: this.options.speed, transition: Fx.Transitions.Sine.easeInOut, onComplete: function() {
            var i = (this.current == 0) ? this.items.length : this.current;
            this.items[i - 1].injectInside(this.el);
            this.el.setStyles({ 'top': 0 });
        } .bind(this)
        });
        this.current = 0;
        this.next();
    },
    next: function() {
        this.current++;
        if (this.current >= this.items.length) this.current = 0;
        var pos = this.items[this.current];
        if (this.options.direction.toLowerCase() == 'horizontal') {
            this.fx.start('left', -pos.offsetLeft);
        } else {
            this.fx.start('top', -pos.offsetTop);
        }
        this.next.bind(this).delay(this.options.delay + this.options.speed);
    }
});