/*
* jQuery Cycle Plugin for light-weight slideshows
* Examples and documentation at: http://malsup.com/jquery/cycle/
*
* @author: M. Alsup
* @version: 1.0.2 (7/24/2007)
* @requires jQuery v1.1.2 or later
*
* Based on the work of:
*  1) Matt Oakes (http://portfolio.gizone.co.uk/applications/slideshow/)
*  2) Torsten Baldes (http://medienfreunde.com/lab/innerfade/)
*/
(function ($) {

    $.fn.cycle112 = function (options) {
        return this.each(function () {
            if (options && options == 'stop') {
                if (this.cycleTimeout) clearTimeout(this.cycleTimeout);
                this.cycleTimeout = 0;
                return;
            }
            var $this = $(this), els = $this.children();
            if (els.length < 2) return; // don't bother

            var opts = $.extend({}, $.fn.cycle112.defaults, options || {}, $.meta ? $this.data() : {});
            if (opts.autostop) opts.countdown = els.length - 1;

            // allow shorthand overrides of width, height and timeout
            var cls = this.className;
            var w = parseInt((cls.match(/w:(\d+)/) || [])[1]) || opts.width
            var h = parseInt((cls.match(/h:(\d+)/) || [])[1]) || opts.height;
            opts.timeout = parseInt((cls.match(/t:(\d+)/) || [])[1]) || opts.timeout;

            // make sure the timeout and speed settings are sane
            if (opts.speed.constructor == String)
                opts.speed = { slow: 600, fast: 200}[opts.speed] || 400;
            while ((opts.timeout - opts.speed) < 250)
                opts.timeout += opts.speed;

            if ($this.css('position') == 'static') $this.css('position', 'relative');
            if (w) $this.width(w);
            if (h && h != 'auto') $this.height(h);

            var $els = $(els).each(function (i) { $(this).css('z-index', els.length - i); }).css('position', 'absolute').hide();
            if (opts.fit && w) $els.width(w);
            if (opts.fit && h && h != 'auto') $els.height(h);
            $(els[0]).show();

            if (opts.pause)
                $this.hover(function () { opts.paused = 1; }, function () { opts.paused = 0; });

            opts.current = opts.random ? (Math.floor(Math.random() * (els.length - 1))) + 1 : 1;
            opts.last = 0;
            this.cycleTimeout = setTimeout(function () { $.fn.cycle112.go(els, opts) }, opts.timeout);
        });
    };

    $.fn.cycle112.go = function (els, opts) {
        if (els[0].parentNode.cycleTimeout === 0) return;
        if (!opts.paused) {
            if (opts.fade) {
                $.fn.cycle112.fadeToggle(els[opts.last], opts.speed);
                $.fn.cycle112.fadeToggle(els[opts.current], opts.speed);
            }
            else {
                $(els[opts.last]).slideUp(opts.speed);
                $(els[opts.current]).slideDown(opts.speed);
            }

            if (opts.random) {
                opts.last = opts.current;
                while (opts.current == opts.last)
                    opts.current = Math.floor(Math.random() * els.length);
            }
            else { // sequence
                var roll = (opts.current + 1) == els.length;
                opts.current = roll ? 0 : opts.current + 1;
                opts.last = roll ? els.length - 1 : opts.current - 1;
            }
        }
        if (opts.autostop && --opts.countdown == 0) return;
        setTimeout(function () { $.fn.cycle112.go(els, opts) }, opts.timeout);
    };

    // this allows more flexibility than the core fade methods
    $.fn.cycle112.fadeToggle = function (el, speed) {
        var $el = $(el);
        var to = $el.is(':visible') && $el.css('opacity') > 0 ? 0 : 1;
        if (to) $el.css('opacity', 0).show();
        $el.fadeTo(speed, to, function () {
            to ? $(this).show() : $(this).hide();
        });
    };

    $.fn.cycle112.defaults = {
        height: 'auto',   // container height
        fade: 1,       // true for fade, false for slide
        speed: 400,     // any valid fx speed value
        timeout: 4000,    // ms duration for each slide
        random: 0,       // true for random, false for sequence
        fit: 0,       // force slides to fit container
        pause: 0,       // true to enable "pause on hover"
        autostop: 0        // true to end slideshow after X slides have been shown (where X == slide count)
        // (note that if random == true not all slides are guaranteed to have been shown)
    };

})(jQuery);