/*
* 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) });
            // ANDREA 11/07/2008: Added function parameter to determine if we want numbers or title for paging links
            if (opts.pager) {
                buildPager(els, opts, opts.pagerDisplayAnchorTitles, opts.pagerUseLiInsteadOfAnchor);
            }

            // 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, opts.pagerUseLiInsteadOfAnchor);
        }
        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, pagerUseLiInsteadOfAnchor) {
        // ANDREA 11/13/2008: CHANGED TO APPLY STYLE TO LI INSTEAD OF A
        if (pagerUseLiInsteadOfAnchor == 0) {
            $(pager).find('a').removeClass('activeSlide').filter('a:eq(' + currSlide + ')').addClass('activeSlide');
        } else {
            $(pager).find('li').removeClass('activeSlide').filter('li: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;
    };
    // ANDREA 11/07/2008: Added function parameter to determine if we want numbers or title for paging links
    function buildPager(els, opts, pagerDisplayAnchorTitles, pagerUseLiInsteadOfAnchor) {
        var $p = $(opts.pager);
        $.each(els, function(i, o) {
            $.fn.cycle.createPagerAnchor(i, o, $p, els, opts, pagerDisplayAnchorTitles, pagerUseLiInsteadOfAnchor);
        });
        $.fn.cycle.updateActivePagerLink(opts.pager, opts.startingSlide);
    };

    $.fn.cycle.createPagerAnchor = function(i, el, $p, els, opts, pagerDisplayAnchorTitles, pagerUseLiInsteadOfAnchor) {
        var $a = (typeof opts.pagerAnchorBuilder == 'function')
        ? $(opts.pagerAnchorBuilder(i, el, pagerDisplayAnchorTitles, pagerUseLiInsteadOfAnchor))
        // ANDREA 11/6/2008: CHANGED BELOW LINE TO DISPLAY SLIDESHOW CHILD ELEMENT TITLE AS LINK TOOLTIP AND TITLE IF FLAG IS SET INSTEAD OF NUMBERS
        //   : $('<a href="#">' + (i + 1) + '</a>');
    : $(((pagerUseLiInsteadOfAnchor == 0) ? '' : '<li>') + '<a href="#" title="' + el.title + '">' + ((pagerDisplayAnchorTitles == 0) ? (i + 1) : (el.title)) + '</a>' + ((pagerUseLiInsteadOfAnchor == 0) ? '' : '</li>'));

        // 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
        pagerDisplayAnchorTitles: 0, // ANDREA 11/072008: flag whether or not to show numbers or titles as the link text
        pagerUseLiInsteadOfAnchor: 0, // ANDREA 11/072008: flag whether or not to show numbers or titles as the link text
        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: 0,     // 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: 1,     // 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);