/*

 * jQuery Cycle Lite Plugin

 * http://malsup.com/jquery/cycle/lite/

 * Copyright (c) 2008-2011 M. Alsup

 * Version: 1.3 (01-JUN-2011)

 * Dual licensed under the MIT and GPL licenses:

 * http://www.opensource.org/licenses/mit-license.php

 * http://www.gnu.org/licenses/gpl.html

 * Requires: jQuery v1.3.2 or later

 */

;(function($) {



var ver = 'Lite-1.3';



$.fn.cycle = function(options) {

    return this.each(function() {

        options = options || {};

        

        if (this.cycleTimeout) clearTimeout(this.cycleTimeout);

        this.cycleTimeout = 0;

        this.cyclePause = 0;

        

        var $cont = $(this);

        var $slides = options.slideExpr ? $(options.slideExpr, this) : $cont.children();

        var els = $slides.get();

        if (els.length < 2) {

            window.console && console.log('terminating; too few slides: ' + els.length);

            return; // don't bother

        }



        // support metadata plugin (v1.0 and v2.0)

        var opts = $.extend({}, $.fn.cycle.defaults, options || {}, $.metadata ? $cont.metadata() : $.meta ? $cont.data() : {});

		var meta = $.isFunction($cont.data) ? $cont.data(opts.metaAttr) : null;

		if (meta)

			opts = $.extend(opts, meta);

            

        opts.before = opts.before ? [opts.before] : [];

        opts.after = opts.after ? [opts.after] : [];

        opts.after.unshift(function(){ opts.busy=0; });

            

        // allow shorthand overrides of width, height and timeout

        var cls = this.className;

        opts.width = parseInt((cls.match(/w:(\d+)/)||[])[1]) || opts.width;

        opts.height = parseInt((cls.match(/h:(\d+)/)||[])[1]) || opts.height;

        opts.timeout = parseInt((cls.match(/t:(\d+)/)||[])[1]) || opts.timeout;



        if ($cont.css('position') == 'static') 

            $cont.css('position', 'relative');

        if (opts.width) 

            $cont.width(opts.width);

        if (opts.height && opts.height != 'auto') 

            $cont.height(opts.height);



        var first = 0;

        $slides.css({position: 'absolute', top:0, left:0}).each(function(i) { 

            $(this).css('z-index', els.length-i) 

        });

        

        $(els[first]).css('opacity',1).show(); // opacity bit needed to handle reinit case

        if ($.browser.msie) els[first].style.removeAttribute('filter');



        if (opts.fit && opts.width) 

            $slides.width(opts.width);

        if (opts.fit && opts.height && opts.height != 'auto') 

            $slides.height(opts.height);

        if (opts.pause) 

            $cont.hover(function(){this.cyclePause=1;}, function(){this.cyclePause=0;});



        var txFn = $.fn.cycle.transitions[opts.fx];

		txFn && txFn($cont, $slides, opts);

        

        $slides.each(function() {

            var $el = $(this);

            this.cycleH = (opts.fit && opts.height) ? opts.height : $el.height();

            this.cycleW = (opts.fit && opts.width) ? opts.width : $el.width();

        });



        if (opts.cssFirst)

            $($slides[first]).css(opts.cssFirst);



        if (opts.timeout) {

            // ensure that timeout and speed settings are sane

            if (opts.speed.constructor == String)

                opts.speed = {slow: 600, fast: 200}[opts.speed] || 400;

            if (!opts.sync)

                opts.speed = opts.speed / 2;

            while((opts.timeout - opts.speed) < 250)

                opts.timeout += opts.speed;

        }

        opts.speedIn = opts.speed;

        opts.speedOut = opts.speed;



 		opts.slideCount = els.length;

        opts.currSlide = first;

        opts.nextSlide = 1;



        // fire artificial events

        var e0 = $slides[first];

        if (opts.before.length)

            opts.before[0].apply(e0, [e0, e0, opts, true]);

        if (opts.after.length > 1)

            opts.after[1].apply(e0, [e0, e0, opts, true]);

        

        if (opts.click && !opts.next)

            opts.next = opts.click;

        if (opts.next)

            $(opts.next).bind('click', function(){return advance(els,opts,opts.rev?-1:1)});

        if (opts.prev)

            $(opts.prev).bind('click', function(){return advance(els,opts,opts.rev?1:-1)});



        if (opts.timeout)

            this.cycleTimeout = setTimeout(function() {

                go(els,opts,0,!opts.rev)

            }, opts.timeout + (opts.delay||0));

    });

};



function go(els, opts, manual, fwd) {

    if (opts.busy) return;

    var p = els[0].parentNode, curr = els[opts.currSlide], next = els[opts.nextSlide];

    if (p.cycleTimeout === 0 && !manual) 

        return;



    if (manual || !p.cyclePause) {

        if (opts.before.length)

            $.each(opts.before, function(i,o) { o.apply(next, [curr, next, opts, fwd]); });

        var after = function() {

            if ($.browser.msie)

                this.style.removeAttribute('filter');

            $.each(opts.after, function(i,o) { o.apply(next, [curr, next, opts, fwd]); });

        };



        if (opts.nextSlide != opts.currSlide) {

            opts.busy = 1;

            $.fn.cycle.custom(curr, next, opts, after);

        }

        var roll = (opts.nextSlide + 1) == els.length;

        opts.nextSlide = roll ? 0 : opts.nextSlide+1;

        opts.currSlide = roll ? els.length-1 : opts.nextSlide-1;

    }

    if (opts.timeout)

        p.cycleTimeout = setTimeout(function() { go(els,opts,0,!opts.rev) }, opts.timeout);

};



// advance slide forward or back

function advance(els, opts, val) {

    var p = els[0].parentNode, timeout = p.cycleTimeout;

    if (timeout) {

        clearTimeout(timeout);

        p.cycleTimeout = 0;

    }

    opts.nextSlide = opts.currSlide + val;

    if (opts.nextSlide < 0) {

        opts.nextSlide = els.length - 1;

    }

    else if (opts.nextSlide >= els.length) {

        opts.nextSlide = 0;

    }

    go(els, opts, 1, val>=0);

    return false;

};



$.fn.cycle.custom = function(curr, next, opts, cb) {

    var $l = $(curr), $n = $(next);

    $n.css(opts.cssBefore);

    var fn = function() {$n.animate(opts.animIn, opts.speedIn, opts.easeIn, cb)};

    $l.animate(opts.animOut, opts.speedOut, opts.easeOut, function() {

        $l.css(opts.cssAfter);

        if (!opts.sync) fn();

    });

    if (opts.sync) fn();

};



$.fn.cycle.transitions = {

    fade: function($cont, $slides, opts) {

		$slides.not(':eq(0)').hide();

		opts.cssBefore = { opacity: 0, display: 'block' };

		opts.cssAfter  = { display: 'none' };

		opts.animOut = { opacity: 0 };

		opts.animIn = { opacity: 1 };

    },

    fadeout: function($cont, $slides, opts) {

		opts.before.push(function(curr,next,opts,fwd) {

			$(curr).css('zIndex',opts.slideCount + (fwd === true ? 1 : 0));

			$(next).css('zIndex',opts.slideCount + (fwd === true ? 0 : 1));

		});

		$slides.not(':eq(0)').hide();

		opts.cssBefore = { opacity: 1, display: 'block', zIndex: 1 };

		opts.cssAfter  = { display: 'none', zIndex: 0 };

		opts.animOut = { opacity: 0 };

    }

};



$.fn.cycle.ver = function() { return ver; };



// @see: http://malsup.com/jquery/cycle/lite/

$.fn.cycle.defaults = {

	animIn:        {},

	animOut:       {},

	fx:           'fade',

    after:         null, 

    before:        null, 

	cssBefore:     {},

	cssAfter:      {},

    delay:         0,    

    fit:           0,    

    height:       'auto',

	metaAttr:     'cycle',

    next:          null, 

    pause:         0,    

    prev:          null, 

    speed:         1000, 

    slideExpr:     null,

    sync:          1,    

    timeout:       5000 

};



})(jQuery);