Carousel = Class.create(Abstract, { initialize: function(scroller, slides, controls, options) {
    this.scrolling = false; this.scroller = $(scroller); this.slides = slides; this.controls = controls; this.options = Object.extend({ duration: 1, auto: false, frequency: 3, visibleSlides: 1, controlClassName: 'carousel-control', jumperClassName: 'carousel-jumper', disabledClassName: 'carousel-disabled', selectedClassName: 'carousel-selected', circular: false, wheel: true, effect: 'scroll', transition: 'sinoidal' }, options || {}); if (this.options.effect == 'fade') { this.options.circular = true; }
    this.slides.each(function(slide, index) { slide._index = index; }); if (this.controls) { this.controls.invoke('observe', 'click', this.click.bind(this)); }
    if (this.options.wheel) { this.scroller.observe('mousewheel', this.wheel.bindAsEventListener(this)).observe('DOMMouseScroll', this.wheel.bindAsEventListener(this)); ; }
    if (this.options.auto) { this.start(); }
    if (this.options.initial) {
        var initialIndex = this.slides.indexOf($(this.options.initial)); if (initialIndex > (this.options.visibleSlides - 1) && this.options.visibleSlides > 1) { if (initialIndex > this.slides.length - (this.options.visibleSlides + 1)) { initialIndex = this.slides.length - this.options.visibleSlides; } }
        this.moveTo(this.slides[initialIndex]);
    } 
}, click: function(event) {
    this.stop(); var element = event.findElement('a'); if (!element.hasClassName(this.options.disabledClassName)) { if (element.hasClassName(this.options.controlClassName)) { eval("this." + element.rel + "()"); } else if (element.hasClassName(this.options.jumperClassName)) { this.moveTo(element.rel); if (this.options.selectedClassName) { this.controls.invoke('removeClassName', this.options.selectedClassName); element.addClassName(this.options.selectedClassName); } } }
    this.deactivateControls(); event.stop();
}, moveTo: function(element) {
    if (this.options.beforeMove && (typeof this.options.beforeMove == 'function')) { this.options.beforeMove(); }
    this.previous = this.current ? this.current : this.slides[0]; this.current = $(element); var scrollerOffset = this.scroller.cumulativeOffset(); var elementOffset = this.current.cumulativeOffset(); if (this.scrolling) { this.scrolling.cancel(); }
    switch (this.options.effect) {
        case 'fade': this.scrolling = new Effect.Opacity(this.scroller, { from: 1.0, to: 0, duration: this.options.duration, afterFinish: (function() {
            this.scroller.scrollLeft = elementOffset[0] - scrollerOffset[0]; this.scroller.scrollTop = elementOffset[1] - scrollerOffset[1]; new Effect.Opacity(this.scroller, { from: 0, to: 1.0, duration: this.options.duration, afterFinish: (function() {
                if (this.controls) { this.activateControls(); }
                if (this.options.afterMove && (typeof this.options.afterMove == 'function')) { this.options.afterMove(); } 
            }).bind(this)
            });
        }).bind(this)
        }); break; case 'scroll': default: var transition; switch (this.options.transition) { case 'spring': transition = Effect.Transitions.spring; break; case 'sinoidal': default: transition = Effect.Transitions.sinoidal; break; }
            this.scrolling = new Effect.SmoothScroll(this.scroller, { duration: this.options.duration, x: (elementOffset[0] - scrollerOffset[0]), y: (elementOffset[1] - scrollerOffset[1]), transition: transition, afterFinish: (function() {
                if (this.controls) { this.activateControls(); }
                if (this.options.afterMove && (typeof this.options.afterMove == 'function')) { this.options.afterMove(); }
                this.scrolling = false;
            }).bind(this)
            }); break;
    }
    return false;
}, prev: function() {
    if (this.current) { var currentIndex = this.current._index; var prevIndex = (currentIndex == 0) ? (this.options.circular ? this.slides.length - 1 : this.slides.length - 1) : currentIndex - 1; } else { var prevIndex = (this.options.circular ? this.slides.length - 1 : 0); }
    if (prevIndex == (this.slides.length - 1) && this.options.circular && this.options.effect != 'fade') { this.scroller.scrollLeft = (this.slides.length - 1) * this.slides.first().getWidth(); this.scroller.scrollTop = (this.slides.length - 1) * this.slides.first().getHeight(); prevIndex = this.slides.length - 2; }
    this.moveTo(this.slides[prevIndex]);
}, next: function() {
    if (this.current) { var currentIndex = this.current._index; var nextIndex = (this.slides.length - 1 == currentIndex) ? 0 : currentIndex + 1; } else { var nextIndex = 1; }
    if (nextIndex == 0 && this.options.circular && this.options.effect != 'fade') { this.scroller.scrollLeft = 0; this.scroller.scrollTop = 0; nextIndex = 1; }
    if (nextIndex > this.slides.length - (this.options.visibleSlides + 1)) { nextIndex = this.slides.length - this.options.visibleSlides; }
    this.moveTo(this.slides[nextIndex]);
}, first: function() { this.moveTo(this.slides[0]); }, last: function() { this.moveTo(this.slides[this.slides.length - 1]); }, toggle: function() { if (this.previous) { this.moveTo(this.slides[this.previous._index]); } else { return false; } }, stop: function() { if (this.timer) { clearTimeout(this.timer); } }, start: function() { this.periodicallyUpdate(); }, pause: function() { this.stop(); this.activateControls(); }, resume: function(event) { if (event) { var related = event.relatedTarget || event.toElement; if (!related || (!this.slides.include(related) && !this.slides.any(function(slide) { return related.descendantOf(slide); }))) { this.start(); } } else { this.start(); } }, periodicallyUpdate: function() {
    if (this.timer != null) { clearTimeout(this.timer); this.next(); }
    this.timer = setTimeout(this.periodicallyUpdate.bind(this), this.options.frequency * 1000);
}, wheel: function(event) {
    event.cancelBubble = true; event.stop(); var delta = 0; if (!event) { event = window.event; }
    if (event.wheelDelta) { delta = event.wheelDelta / 120; } else if (event.detail) { delta = -event.detail / 3; }
    if (!this.scrolling) { this.deactivateControls(); if (delta > 0) { this.prev(); } else { this.next(); } }
    return Math.round(delta);
}, deactivateControls: function() { this.controls.invoke('addClassName', this.options.disabledClassName); }, activateControls: function() { this.controls.invoke('removeClassName', this.options.disabledClassName); } 
}); Effect.SmoothScroll = Class.create(); Object.extend(Object.extend(Effect.SmoothScroll.prototype, Effect.Base.prototype), { initialize: function(element) { this.element = $(element); var options = Object.extend({ x: 0, y: 0, mode: 'absolute' }, arguments[1] || {}); this.start(options); }, setup: function() {
    if (this.options.continuous && !this.element._ext) { this.element.cleanWhitespace(); this.element._ext = true; this.element.appendChild(this.element.firstChild); }
    this.originalLeft = this.element.scrollLeft; this.originalTop = this.element.scrollTop; if (this.options.mode == 'absolute') { this.options.x -= this.originalLeft; this.options.y -= this.originalTop; } 
}, update: function(position) { this.element.scrollLeft = this.options.x * position + this.originalLeft; this.element.scrollTop = this.options.y * position + this.originalTop; } 
});