/*



 * 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.cycle = 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.cycle.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.cycle.go(els, opts)}, opts.timeout);



    });



};







$.fn.cycle.go = function (els, opts) {



    if (els[0].parentNode.cycleTimeout === 0) return;



    if (!opts.paused) {



        if (opts.fade) {



            $.fn.cycle.fadeToggle(els[opts.last], opts.speed);



            $.fn.cycle.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.cycle.go(els, opts) }, opts.timeout);



};







// this allows more flexibility than the core fade methods



$.fn.cycle.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.cycle.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);