/*

 * jQuery Cycle Plugin

 * Examples and documentation at: http://malsup.com/jquery/cycle/

 * Copyright (c) 2007-2008 M. Alsup

 * Version: 2.30 (02-NOV-2008)

 * 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 v1.2.3 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/)

 *  3) Benjamin Sterling (http://www.benjaminsterling.com/experiments/jqShuffle/)

 */

;(function($) {



var ver = '2.30';

var ie6 = $.browser.msie && /MSIE 6.0/.test(navigator.userAgent);



function log() {

    if (window.console && window.console.log)

        window.console.log('[cycle] ' + Array.prototype.join.call(arguments,''));

};



$.fn.cycle = function(options) {

	var opt2 = arguments[1];

    return this.each(function() {

        if (options === undefined || options === null)

            options = {};

        if (options.constructor == String) {

            switch(options) {

            case 'stop':

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

                this.cycleTimeout = 0;

                $(this).data('cycle.opts', '');

                return;

            case 'pause':

                this.cyclePause = 1;

                return;

            case 'resume':

				this.cyclePause = 0;

				if (opt2 === true) { // resume now!

		            options = $(this).data('cycle.opts');

		            if (!options) {

		                log('options not found, can not resume');

		                return;

		            }

					if (this.cycleTimeout) {

						clearTimeout(this.cycleTimeout);

						this.cycleTimeout = 0;

					}            

					go(options.elements, options, 1, 1);

				}

                return;

            default:

                options = { fx: options };

            };

        }

        else if (options.constructor == Number) {

            // go to the requested slide

            var num = options;

            options = $(this).data('cycle.opts');

            if (!options) {

                log('options not found, can not advance slide');

                return;

            }

            if (num < 0 || num >= options.elements.length) {

                log('invalid slide index: ' + num);

                return;

            }

            options.nextSlide = num;

            if (this.cycleTimeout) {

                clearTimeout(this.cycleTimeout);

                this.cycleTimeout = 0;

            }            

            go(options.elements, options, 1, num >= options.currSlide);

            return;

        }



        // stop existing slideshow for this container (if there is one)

        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) {

            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() : {});

        if (opts.autostop) 

            opts.countdown = opts.autostopCount || els.length;



        $cont.data('cycle.opts', opts);

        opts.container = this;



        opts.elements = els;

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

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

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

        if (opts.continuous)

            opts.after.push(function() { go(els,opts,0,!opts.rev); });

            

        // clearType corrections

        if (ie6 && opts.cleartype && !opts.cleartypeNoBg)

            clearTypeFix($slides);



        // 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);



		if (opts.startingSlide) opts.startingSlide = parseInt(opts.startingSlide);	

			

        if (opts.random) {

            opts.randomMap = [];

            for (var i = 0; i < els.length; i++) 

                opts.randomMap.push(i);

            opts.randomMap.sort(function(a,b) {return Math.random() - 0.5;});

            opts.randomIndex = 0;

            opts.startingSlide = opts.randomMap[0];

        }

        else if (opts.startingSlide >= els.length)

            opts.startingSlide = 0; // catch bogus input

        var first = opts.startingSlide || 0;

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

            var z = first ? i >= first ? els.length - (i-first) : first-i : els.length-i;

            $(this).css('z-index', z) 

        });

        

        $(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;});



        // run transition init fn

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

        if ($.isFunction(init))

            init($cont, $slides, opts);

        else if (opts.fx != 'custom')

            log('unknown transition: ' + opts.fx);

        

        $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();

        });



        opts.cssBefore = opts.cssBefore || {};

        opts.animIn = opts.animIn || {};

        opts.animOut = opts.animOut || {};



        $slides.not(':eq('+first+')').css(opts.cssBefore);

        if (opts.cssFirst)

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



        if (opts.timeout) {

			opts.timeout = parseInt(opts.timeout);

            // ensure that timeout and speed settings are sane

            if (opts.speed.constructor == String)

                opts.speed = $.fx.speeds[opts.speed] || parseInt(opts.speed);

            if (!opts.sync)

                opts.speed = opts.speed / 2;

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

                opts.timeout += opts.speed;

        }

        if (opts.easing) 

            opts.easeIn = opts.easeOut = opts.easing;

        if (!opts.speedIn) 

            opts.speedIn = opts.speed;

        if (!opts.speedOut) 

            opts.speedOut = opts.speed;



 		opts.slideCount = els.length;

        opts.currSlide = first;

        if (opts.random) {

            opts.nextSlide = opts.currSlide;

            if (++opts.randomIndex == els.length) 

                opts.randomIndex = 0;

            opts.nextSlide = opts.randomMap[opts.randomIndex];

        }

        else

            opts.nextSlide = opts.startingSlide >= (els.length-1) ? 0 : opts.startingSlide+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.pager)

            buildPager(els,opts);



        // expose fn for adding slides after the show has started

        opts.addSlide = function(newSlide, prepend) {

            var $s = $(newSlide), s = $s[0];

            if (!opts.autostopCount)

                opts.countdown++;

            els[prepend?'unshift':'push'](s);

            if (opts.els)

                opts.els[prepend?'unshift':'push'](s); // shuffle needs this

            opts.slideCount = els.length;

            

            $s.css('position','absolute');

            $s[prepend?'prependTo':'appendTo']($cont);

            

            if (prepend) {

                opts.currSlide++;

                opts.nextSlide++;

            }

            

            if (ie6 && opts.cleartype && !opts.cleartypeNoBg)

                clearTypeFix($s);



            if (opts.fit && opts.width) 

                $s.width(opts.width);

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

                $slides.height(opts.height);

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

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



            $s.css(opts.cssBefore);



            if (opts.pager)

                $.fn.cycle.createPagerAnchor(els.length-1, s, $(opts.pager), els, opts);

            

            if (typeof opts.onAddSlide == 'function')

                opts.onAddSlide($s);

        };



        if (opts.timeout || opts.continuous)

            this.cycleTimeout = setTimeout(

                function(){go(els,opts,0,!opts.rev)}, 

                opts.continuous ? 10 : opts.timeout + (opts.delay||0));

    });

};



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

    if (opts.busy) return;

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

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

        return;



    if (!manual && !p.cyclePause && 

        ((opts.autostop && (--opts.countdown <= 0)) ||

        (opts.nowrap && !opts.random && opts.nextSlide < opts.currSlide))) {

        if (opts.end)

            opts.end(opts);

        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 && opts.cleartype)

                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;

            if (opts.fxFn)

                opts.fxFn(curr, next, opts, after, fwd);

            else if ($.isFunction($.fn.cycle[opts.fx]))

                $.fn.cycle[opts.fx](curr, next, opts, after);

            else

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

        }

        if (opts.random) {

            opts.currSlide = opts.nextSlide;

            if (++opts.randomIndex == els.length) 

                opts.randomIndex = 0;

            opts.nextSlide = opts.randomMap[opts.randomIndex];

        }

        else { // sequence

            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.pager)

            $.fn.cycle.updateActivePagerLink(opts.pager, opts.currSlide);

    }

    if (opts.timeout && !opts.continuous)

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

    else if (opts.continuous && p.cyclePause) 

        p.cycleTimeout = setTimeout(function() { go(els,opts,0,!opts.rev) }, 10);

};



$.fn.cycle.updateActivePagerLink = function(pager, currSlide) {

    $(pager).find('a').removeClass('activeSlide').filter('a:eq('+currSlide+')').addClass('activeSlide');

};



// advance slide forward or back

function advance(els, opts, val) {

    var p = opts.container, timeout = p.cycleTimeout;

    if (timeout) {

        clearTimeout(timeout);

        p.cycleTimeout = 0;

    }

    if (opts.random && val < 0) {

        // move back to the previously display slide

        opts.randomIndex--;

        if (--opts.randomIndex == -2)

            opts.randomIndex = els.length-2;

        else if (opts.randomIndex == -1)

            opts.randomIndex = els.length-1;

        opts.nextSlide = opts.randomMap[opts.randomIndex];

    }

    else if (opts.random) {

        if (++opts.randomIndex == els.length) 

            opts.randomIndex = 0;

        opts.nextSlide = opts.randomMap[opts.randomIndex];

    }

    else {

        opts.nextSlide = opts.currSlide + val;

        if (opts.nextSlide < 0) {

            if (opts.nowrap) return false;

            opts.nextSlide = els.length - 1;

        }

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

            if (opts.nowrap) return false;

            opts.nextSlide = 0;

        }

    }

    

    if (opts.prevNextClick && typeof opts.prevNextClick == 'function')

        opts.prevNextClick(val > 0, opts.nextSlide, els[opts.nextSlide]);

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

    return false;

};



function buildPager(els, opts) {

    var $p = $(opts.pager);

    $.each(els, function(i,o) {

        $.fn.cycle.createPagerAnchor(i,o,$p,els,opts);

    });

   $.fn.cycle.updateActivePagerLink(opts.pager, opts.startingSlide);

};



$.fn.cycle.createPagerAnchor = function(i, el, $p, els, opts) {

    var $a = (typeof opts.pagerAnchorBuilder == 'function')

        ? $(opts.pagerAnchorBuilder(i,el))

        : $('<a href="#">'+(i+1)+'</a>');

    

    // don't reparent if anchor is in the dom

    if ($a.parents('body').length == 0)

        $a.appendTo($p);

        

    $a.bind(opts.pagerEvent, function() {

        opts.nextSlide = i;

        var p = opts.container, timeout = p.cycleTimeout;

        if (timeout) {

            clearTimeout(timeout);

            p.cycleTimeout = 0;

        }            

        if (typeof opts.pagerClick == 'function')

            opts.pagerClick(opts.nextSlide, els[opts.nextSlide]);

        go(els,opts,1,opts.currSlide < i);

        return false;

    });

	if (opts.pauseOnPagerHover)

		$a.hover(function() { opts.container.cyclePause = 1; }, function() { opts.container.cyclePause = 0; } );

};





// this fixes clearType problems in ie6 by setting an explicit bg color

function clearTypeFix($slides) {

    function hex(s) {

        var s = parseInt(s).toString(16);

        return s.length < 2 ? '0'+s : s;

    };

    function getBg(e) {

        for ( ; e && e.nodeName.toLowerCase() != 'html'; e = e.parentNode) {

            var v = $.css(e,'background-color');

            if (v.indexOf('rgb') >= 0 ) { 

                var rgb = v.match(/\d+/g); 

                return '#'+ hex(rgb[0]) + hex(rgb[1]) + hex(rgb[2]);

            }

            if (v && v != 'transparent')

                return v;

        }

        return '#ffffff';

    };

    $slides.each(function() { $(this).css('background-color', getBg(this)); });

};





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

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

    $n.css(opts.cssBefore);

    var speedIn = immediate ? 1 : opts.speedIn;

    var speedOut = immediate ? 1 : opts.speedOut;

    var easeIn = immediate ? null : opts.easeIn;

    var easeOut = immediate ? null : opts.easeOut;

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

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

        if (opts.cssAfter) $l.css(opts.cssAfter);

        if (!opts.sync) fn();

    });

    if (opts.sync) fn();

};



$.fn.cycle.transitions = {

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

        $slides.not(':eq('+opts.startingSlide+')').css('opacity',0);

        opts.before.push(function() { $(this).show() });

        opts.animIn    = { opacity: 1 };

        opts.animOut   = { opacity: 0 };

        opts.cssBefore = { opacity: 0 };

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

        opts.onAddSlide = function($s) { $s.hide(); };

    }

};



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



// override these globally if you like (they are all optional)

$.fn.cycle.defaults = {

    fx:           'fade', // one of: fade, shuffle, zoom, scrollLeft, etc

    timeout:       4000,  // milliseconds between slide transitions (0 to disable auto advance)

    continuous:    0,     // true to start next transition immediately after current one completes

    speed:         1000,  // speed of the transition (any valid fx speed value)

    speedIn:       null,  // speed of the 'in' transition

    speedOut:      null,  // speed of the 'out' transition

    next:          null,  // id of element to use as click trigger for next slide

    prev:          null,  // id of element to use as click trigger for previous slide

    prevNextClick: null,  // callback fn for prev/next clicks:  function(isNext, zeroBasedSlideIndex, slideElement)

    pager:         null,  // id of element to use as pager container

    pagerClick:    null,  // callback fn for pager clicks:  function(zeroBasedSlideIndex, slideElement)

    pagerEvent:   'click', // event which drives the pager navigation

    pagerAnchorBuilder: null, // callback fn for building anchor links

    before:        null,  // transition callback (scope set to element to be shown)

    after:         null,  // transition callback (scope set to element that was shown)

    end:           null,  // callback invoked when the slideshow terminates (use with autostop or nowrap options)

    easing:        null,  // easing method for both in and out transitions

    easeIn:        null,  // easing for "in" transition

    easeOut:       null,  // easing for "out" transition

    shuffle:       null,  // coords for shuffle animation, ex: { top:15, left: 200 }

    animIn:        null,  // properties that define how the slide animates in

    animOut:       null,  // properties that define how the slide animates out

    cssBefore:     null,  // properties that define the initial state of the slide before transitioning in

    cssAfter:      null,  // properties that defined the state of the slide after transitioning out

    fxFn:          null,  // function used to control the transition

    height:       'auto', // container height

    startingSlide: 0,     // zero-based index of the first slide to be displayed

    sync:          1,     // true if in/out transitions should occur simultaneously

    random:        0,     // true for random, false for sequence (not applicable to shuffle fx)

    fit:           0,     // force slides to fit container

    pause:         0,     // true to enable "pause on hover"

	pauseOnPagerHover: 0, // true to pause when hovering over pager link

    autostop:      0,     // true to end slideshow after X transitions (where X == slide count)

    autostopCount: 0,     // number of transitions (optionally used with autostop to define X)

    delay:         0,     // additional delay (in ms) for first transition (hint: can be negative)

    slideExpr:     null,  // expression for selecting slides (if something other than all children is required)

    cleartype:     0,     // true if clearType corrections should be applied (for IE)

    nowrap:        0,     // true to prevent slideshow from wrapping

    fastOnEvent:   0      // force immediate transition when triggered manually (via pager or prev/next)

};



})(jQuery);