/*!
 * jQuery Cycle Plugin (core)
 * Examples and documentation at: http://jquery.malsup.com/cycle/
 * Copyright (c) 2007-2010 M. Alsup
 * Version: 2.86 (05-APR-2010)
 * 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 v1.2.6 or later
 */
;(function($) {

var ver = '2.86';

// if $.support is not defined (pre jQuery 1.3) add what I need
if ($.support == undefined) {
        $.support = {
                opacity: !($.browser.msie)
        };
}

function debug(s) {
        if ($.fn.cycle.debug)
                log(s);
}               
function log() {
        if (window.console && window.console.log)
                window.console.log('[cycle] ' + Array.prototype.join.call(arguments,' '));
};

// the options arg can be...
//   a number  - indicates an immediate transition should occur to the given slide index
//   a string  - 'pause', 'resume', 'toggle', 'next', 'prev', 'stop', 'destroy' or the name of a transition effect (ie, 'fade', 'zoom', etc)
//   an object - properties to control the slideshow
//
// the arg2 arg can be...
//   the name of an fx (only used in conjunction with a numeric value for 'options')
//   the value true (only used in first arg == 'resume') and indicates
//       that the resume should occur immediately (not wait for next timeout)

$.fn.cycle = function(options, arg2) {
        var o = { s: this.selector, c: this.context };

        // in 1.3+ we can fix mistakes with the ready state
        if (this.length === 0 && options != 'stop') {
                if (!$.isReady && o.s) {
                        log('DOM not ready, queuing slideshow');
                        $(function() {
                                $(o.s,o.c).cycle(options,arg2);
                        });
                        return this;
                }
                // is your DOM ready?  http://docs.jquery.com/Tutorials:Introducing_$(document).ready()
                log('terminating; zero elements found by selector' + ($.isReady ? '' : ' (DOM not ready)'));
                return this;
        }

        // iterate the matched nodeset
        return this.each(function() {
                var opts = handleArguments(this, options, arg2);
                if (opts === false)
                        return;

                opts.updateActivePagerLink = opts.updateActivePagerLink || $.fn.cycle.updateActivePagerLink;
                
                // stop existing slideshow for this container (if there is one)
                if (this.cycleTimeout)
                        clearTimeout(this.cycleTimeout);
                this.cycleTimeout = this.cyclePause = 0;

                var $cont = $(this);
                var $slides = opts.slideExpr ? $(opts.slideExpr, this) : $cont.children();
                var els = $slides.get();
                if (els.length < 2) {
                        log('terminating; too few slides: ' + els.length);
                        return;
                }

                var opts2 = buildOptions($cont, $slides, els, opts, o);
                if (opts2 === false)
                        return;

                var startTime = opts2.continuous ? 10 : getTimeout(opts2.currSlide, opts2.nextSlide, opts2, !opts2.rev);

                // if it's an auto slideshow, kick it off
                if (startTime) {
                        startTime += (opts2.delay || 0);
                        if (startTime < 10)
                                startTime = 10;
                        debug('first timeout: ' + startTime);
                        this.cycleTimeout = setTimeout(function(){go(els,opts2,0,!opts2.rev)}, startTime);
                }
        });
};

// process the args that were passed to the plugin fn
function handleArguments(cont, options, arg2) {
        if (cont.cycleStop == undefined)
                cont.cycleStop = 0;
        if (options === undefined || options === null)
                options = {};
        if (options.constructor == String) {
                switch(options) {
                case 'destroy':
                case 'stop':
                        var opts = $(cont).data('cycle.opts');
                        if (!opts)
                                return false;
                        cont.cycleStop++; // callbacks look for change
                        if (cont.cycleTimeout)
                                clearTimeout(cont.cycleTimeout);
                        cont.cycleTimeout = 0;
                        $(cont).removeData('cycle.opts');
                        if (options == 'destroy')
                                destroy(opts);
                        return false;
                case 'toggle':
                        cont.cyclePause = (cont.cyclePause === 1) ? 0 : 1;
                        checkInstantResume(cont.cyclePause, arg2, cont);
                        return false;
                case 'pause':
                        cont.cyclePause = 1;
                        return false;
                case 'resume':
                        cont.cyclePause = 0;
                        checkInstantResume(false, arg2, cont);
                        return false;
                case 'prev':
                case 'next':
                        var opts = $(cont).data('cycle.opts');
                        if (!opts) {
                                log('options not found, "prev/next" ignored');
                                return false;
                        }
                        $.fn.cycle[options](opts);
                        return false;
                default:
                        options = { fx: options };
                };
                return options;
        }
        else if (options.constructor == Number) {
                // go to the requested slide
                var num = options;
                options = $(cont).data('cycle.opts');
                if (!options) {
                        log('options not found, can not advance slide');
                        return false;
                }
                if (num < 0 || num >= options.elements.length) {
                        log('invalid slide index: ' + num);
                        return false;
                }
                options.nextSlide = num;
                if (cont.cycleTimeout) {
                        clearTimeout(cont.cycleTimeout);
                        cont.cycleTimeout = 0;
                }
                if (typeof arg2 == 'string')
                        options.oneTimeFx = arg2;
                go(options.elements, options, 1, num >= options.currSlide);
                return false;
        }
        return options;
        
        function checkInstantResume(isPaused, arg2, cont) {
                if (!isPaused && arg2 === true) { // resume now!
                        var options = $(cont).data('cycle.opts');
                        if (!options) {
                                log('options not found, can not resume');
                                return false;
                        }
                        if (cont.cycleTimeout) {
                                clearTimeout(cont.cycleTimeout);
                                cont.cycleTimeout = 0;
                        }
                        go(options.elements, options, 1, 1);
                }
        }
};

function removeFilter(el, opts) {
        if (!$.support.opacity && opts.cleartype && el.style.filter) {
                try { el.style.removeAttribute('filter'); }
                catch(smother) {} // handle old opera versions
        }
};

// unbind event handlers
function destroy(opts) {
        if (opts.next)
                $(opts.next).unbind(opts.prevNextEvent);
        if (opts.prev)
                $(opts.prev).unbind(opts.prevNextEvent);
        
        if (opts.pager || opts.pagerAnchorBuilder)
                $.each(opts.pagerAnchors || [], function() {
                        this.unbind().remove();
                });
        opts.pagerAnchors = null;
        if (opts.destroy) // callback
                opts.destroy(opts);
};

// one-time initialization
function buildOptions($cont, $slides, els, options, o) {
        // 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;

        var cont = $cont[0];
        $cont.data('cycle.opts', opts);
        opts.$cont = $cont;
        opts.stopCount = cont.cycleStop;
        opts.elements = els;
        opts.before = opts.before ? [opts.before] : [];
        opts.after = opts.after ? [opts.after] : [];
        opts.after.unshift(function(){ opts.busy=0; });

        // push some after callbacks
        if (!$.support.opacity && opts.cleartype)
                opts.after.push(function() { removeFilter(this, opts); });
        if (opts.continuous)
                opts.after.push(function() { go(els,opts,0,!opts.rev); });

        saveOriginalOpts(opts);

        // clearType corrections
        if (!$.support.opacity && opts.cleartype && !opts.cleartypeNoBg)
                clearTypeFix($slides);

        // container requires non-static position so that slides can be position within
        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 random, mix up the slide array
        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 = 1;
                opts.startingSlide = opts.randomMap[1];
        }
        else if (opts.startingSlide >= els.length)
                opts.startingSlide = 0; // catch bogus input
        opts.currSlide = opts.startingSlide || 0;
        var first = opts.startingSlide;

        // set position and zIndex on all the slides
        $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)
        });

        // make sure first slide is visible
        $(els[first]).css('opacity',1).show(); // opacity bit needed to handle restart use case
        removeFilter(els[first], opts);

        // stretch slides
        if (opts.fit && opts.width)
                $slides.width(opts.width);
        if (opts.fit && opts.height && opts.height != 'auto')
                $slides.height(opts.height);

        // stretch container
        var reshape = opts.containerResize && !$cont.innerHeight();
        if (reshape) { // do this only if container has no size http://tinyurl.com/da2oa9
                var maxw = 0, maxh = 0;
                for(var j=0; j < els.length; j++) {
                        var $e = $(els[j]), e = $e[0], w = $e.outerWidth(), h = $e.outerHeight();
                        if (!w) w = e.offsetWidth || e.width || $e.attr('width')
                        if (!h) h = e.offsetHeight || e.height || $e.attr('height');
                        maxw = w > maxw ? w : maxw;
                        maxh = h > maxh ? h : maxh;
                }
                if (maxw > 0 && maxh > 0)
                        $cont.css({width:maxw+'px',height:maxh+'px'});
        }

        if (opts.pause)
                $cont.hover(function(){this.cyclePause++;},function(){this.cyclePause--;});

        if (supportMultiTransitions(opts) === false)
                return false;

        // apparently a lot of people use image slideshows without height/width attributes on the images.
        // Cycle 2.50+ requires the sizing info for every slide; this block tries to deal with that.
        var requeue = false;
        options.requeueAttempts = options.requeueAttempts || 0;
        $slides.each(function() {
                // try to get height/width of each slide
                var $el = $(this);
                this.cycleH = (opts.fit && opts.height) ? opts.height : ($el.height() || this.offsetHeight || this.height || $el.attr('height') || 0);
                this.cycleW = (opts.fit && opts.width) ? opts.width : ($el.width() || this.offsetWidth || this.width || $el.attr('width') || 0);

                if ( $el.is('img') ) {
                        // sigh..  sniffing, hacking, shrugging...  this crappy hack tries to account for what browsers do when
                        // an image is being downloaded and the markup did not include sizing info (height/width attributes);
                        // there seems to be some "default" sizes used in this situation
                        var loadingIE   = ($.browser.msie  && this.cycleW == 28 && this.cycleH == 30 && !this.complete);
                        var loadingFF   = ($.browser.mozilla && this.cycleW == 34 && this.cycleH == 19 && !this.complete);
                        var loadingOp   = ($.browser.opera && ((this.cycleW == 42 && this.cycleH == 19) || (this.cycleW == 37 && this.cycleH == 17)) && !this.complete);
                        var loadingOther = (this.cycleH == 0 && this.cycleW == 0 && !this.complete);
                        // don't requeue for images that are still loading but have a valid size
                        if (loadingIE || loadingFF || loadingOp || loadingOther) {
                                if (o.s && opts.requeueOnImageNotLoaded && ++options.requeueAttempts < 100) { // track retry count so we don't loop forever
                                        log(options.requeueAttempts,' - img slide not loaded, requeuing slideshow: ', this.src, this.cycleW, this.cycleH);
                                        setTimeout(function() {$(o.s,o.c).cycle(options)}, opts.requeueTimeout);
                                        requeue = true;
                                        return false; // break each loop
                                }
                                else {
                                        log('could not determine size of image: '+this.src, this.cycleW, this.cycleH);
                                }
                        }
                }
                return true;
        });

        if (requeue)
                return false;

        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;
                
                var buffer = opts.fx == 'shuffle' ? 500 : 250;
                while((opts.timeout - opts.speed) < buffer) // sanitize timeout
                        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 = opts.lastSlide = first;
        if (opts.random) {
                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;

        // run transition init fn
        if (!opts.multiFx) {
                var init = $.fn.cycle.transitions[opts.fx];
                if ($.isFunction(init))
                        init($cont, $slides, opts);
                else if (opts.fx != 'custom' && !opts.multiFx) {
                        log('unknown transition: ' + opts.fx,'; slideshow terminating');
                        return false;
                }
        }

        // 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.next)
                $(opts.next).bind(opts.prevNextEvent,function(){return advance(opts,opts.rev?-1:1)});
        if (opts.prev)
                $(opts.prev).bind(opts.prevNextEvent,function(){return advance(opts,opts.rev?1:-1)});
        if (opts.pager || opts.pagerAnchorBuilder)
                buildPager(els,opts);

        exposeAddSlide(opts, els);

        return opts;
};

// save off original opts so we can restore after clearing state
function saveOriginalOpts(opts) {
        opts.original = { before: [], after: [] };
        opts.original.cssBefore = $.extend({}, opts.cssBefore);
        opts.original.cssAfter  = $.extend({}, opts.cssAfter);
        opts.original.animIn    = $.extend({}, opts.animIn);
        opts.original.animOut   = $.extend({}, opts.animOut);
        $.each(opts.before, function() { opts.original.before.push(this); });
        $.each(opts.after,  function() { opts.original.after.push(this); });
};

function supportMultiTransitions(opts) {
        var i, tx, txs = $.fn.cycle.transitions;
        // look for multiple effects
        if (opts.fx.indexOf(',') > 0) {
                opts.multiFx = true;
                opts.fxs = opts.fx.replace(/\s*/g,'').split(',');
                // discard any bogus effect names
                for (i=0; i < opts.fxs.length; i++) {
                        var fx = opts.fxs[i];
                        tx = txs[fx];
                        if (!tx || !txs.hasOwnProperty(fx) || !$.isFunction(tx)) {
                                log('discarding unknown transition: ',fx);
                                opts.fxs.splice(i,1);
                                i--;
                        }
                }
                // if we have an empty list then we threw everything away!
                if (!opts.fxs.length) {
                        log('No valid transitions named; slideshow terminating.');
                        return false;
                }
        }
        else if (opts.fx == 'all') {  // auto-gen the list of transitions
                opts.multiFx = true;
                opts.fxs = [];
                for (p in txs) {
                        tx = txs[p];
                        if (txs.hasOwnProperty(p) && $.isFunction(tx))
                                opts.fxs.push(p);
                }
        }
        if (opts.multiFx && opts.randomizeEffects) {
                // munge the fxs array to make effect selection random
                var r1 = Math.floor(Math.random() * 20) + 30;
                for (i = 0; i < r1; i++) {
                        var r2 = Math.floor(Math.random() * opts.fxs.length);
                        opts.fxs.push(opts.fxs.splice(r2,1)[0]);
                }
                debug('randomized fx sequence: ',opts.fxs);
        }
        return true;
};

// provide a mechanism for adding slides after the slideshow has started
function exposeAddSlide(opts, els) {
        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');
                $s[prepend?'prependTo':'appendTo'](opts.$cont);

                if (prepend) {
                        opts.currSlide++;
                        opts.nextSlide++;
                }

                if (!$.support.opacity && opts.cleartype && !opts.cleartypeNoBg)
                        clearTypeFix($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 || opts.pagerAnchorBuilder)
                        $.fn.cycle.createPagerAnchor(els.length-1, s, $(opts.pager), els, opts);

                if ($.isFunction(opts.onAddSlide))
                        opts.onAddSlide($s);
                else
                        $s.hide(); // default behavior
        };
}

// reset internal state; we do this on every pass in order to support multiple effects
$.fn.cycle.resetState = function(opts, fx) {
        fx = fx || opts.fx;
        opts.before = []; opts.after = [];
        opts.cssBefore = $.extend({}, opts.original.cssBefore);
        opts.cssAfter  = $.extend({}, opts.original.cssAfter);
        opts.animIn     = $.extend({}, opts.original.animIn);
        opts.animOut   = $.extend({}, opts.original.animOut);
        opts.fxFn = null;
        $.each(opts.original.before, function() { opts.before.push(this); });
        $.each(opts.original.after,  function() { opts.after.push(this); });

        // re-init
        var init = $.fn.cycle.transitions[fx];
        if ($.isFunction(init))
                init(opts.$cont, $(opts.elements), opts);
};

// this is the main engine fn, it handles the timeouts, callbacks and slide index mgmt
function go(els, opts, manual, fwd) {
        // opts.busy is true if we're in the middle of an animation
        if (manual && opts.busy && opts.manualTrump) {
                // let manual transitions requests trump active ones
                debug('manualTrump in go(), stopping active transition');
                $(els).stop(true,true);
                opts.busy = false;
        }
        // don't begin another timeout-based transition if there is one active
        if (opts.busy) {
                debug('transition active, ignoring new tx request');
                return;
        }

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

        // stop cycling if we have an outstanding stop request
        if (p.cycleStop != opts.stopCount || p.cycleTimeout === 0 && !manual)
                return;

        // check to see if we should stop cycling based on autostop options
        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 slideshow is paused, only transition on a manual trigger
        var changed = false;
        if ((manual || !p.cyclePause) && (opts.nextSlide != opts.currSlide)) {
                changed = true;
                var fx = opts.fx;
                // keep trying to get the slide size if we don't have it yet
                curr.cycleH = curr.cycleH || $(curr).height();
                curr.cycleW = curr.cycleW || $(curr).width();
                next.cycleH = next.cycleH || $(next).height();
                next.cycleW = next.cycleW || $(next).width();

                // support multiple transition types
                if (opts.multiFx) {
                        if (opts.lastFx == undefined || ++opts.lastFx >= opts.fxs.length)
                                opts.lastFx = 0;
                        fx = opts.fxs[opts.lastFx];
                        opts.currFx = fx;
                }

                // one-time fx overrides apply to:  $('div').cycle(3,'zoom');
                if (opts.oneTimeFx) {
                        fx = opts.oneTimeFx;
                        opts.oneTimeFx = null;
                }

                $.fn.cycle.resetState(opts, fx);

                // run the before callbacks
                if (opts.before.length)
                        $.each(opts.before, function(i,o) {
                                if (p.cycleStop != opts.stopCount) return;
                                o.apply(next, [curr, next, opts, fwd]);
                        });

                // stage the after callacks
                var after = function() {
                        $.each(opts.after, function(i,o) {
                                if (p.cycleStop != opts.stopCount) return;
                                o.apply(next, [curr, next, opts, fwd]);
                        });
                };

                debug('tx firing; currSlide: ' + opts.currSlide + '; nextSlide: ' + opts.nextSlide);
                
                // get ready to perform the transition
                opts.busy = 1;
                if (opts.fxFn) // fx function provided?
                        opts.fxFn(curr, next, opts, after, fwd, manual && opts.fastOnEvent);
                else if ($.isFunction($.fn.cycle[opts.fx])) // fx plugin ?
                        $.fn.cycle[opts.fx](curr, next, opts, after, fwd, manual && opts.fastOnEvent);
                else
                        $.fn.cycle.custom(curr, next, opts, after, fwd, manual && opts.fastOnEvent);
        }

        if (changed || opts.nextSlide == opts.currSlide) {
                // calculate the next slide
                opts.lastSlide = opts.currSlide;
                if (opts.random) {
                        opts.currSlide = opts.nextSlide;
                        if (++opts.randomIndex == els.length)
                                opts.randomIndex = 0;
                        opts.nextSlide = opts.randomMap[opts.randomIndex];
                        if (opts.nextSlide == opts.currSlide)
                                opts.nextSlide = (opts.currSlide == opts.slideCount - 1) ? 0 : opts.currSlide + 1;
                }
                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 (changed && opts.pager)
                opts.updateActivePagerLink(opts.pager, opts.currSlide, opts.activePagerClass);
        
        // stage the next transition
        var ms = 0;
        if (opts.timeout && !opts.continuous)
                ms = getTimeout(curr, next, opts, fwd);
        else if (opts.continuous && p.cyclePause) // continuous shows work off an after callback, not this timer logic
                ms = 10;
        if (ms > 0)
                p.cycleTimeout = setTimeout(function(){ go(els, opts, 0, !opts.rev) }, ms);
};

// invoked after transition
$.fn.cycle.updateActivePagerLink = function(pager, currSlide, clsName) {
   $(pager).each(function() {
       $(this).children().removeClass(clsName).eq(currSlide).addClass(clsName);
   });
};

// calculate timeout value for current transition
function getTimeout(curr, next, opts, fwd) {
        if (opts.timeoutFn) {
                // call user provided calc fn
                var t = opts.timeoutFn(curr,next,opts,fwd);
                while ((t - opts.speed) < 250) // sanitize timeout
                        t += opts.speed;
                debug('calculated timeout: ' + t + '; speed: ' + opts.speed);
                if (t !== false)
                        return t;
        }
        return opts.timeout;
};

// expose next/prev function, caller must pass in state
$.fn.cycle.next = function(opts) { advance(opts, opts.rev?-1:1); };
$.fn.cycle.prev = function(opts) { advance(opts, opts.rev?1:-1);};

// advance slide forward or back
function advance(opts, val) {
        var els = opts.elements;
        var p = opts.$cont[0], 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) {
                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;
                }
        }

        var cb = opts.onPrevNextEvent || opts.prevNextClick; // prevNextClick is deprecated
        if ($.isFunction(cb))
                cb(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);
        });
        opts.updateActivePagerLink(opts.pager, opts.startingSlide, opts.activePagerClass);
};

$.fn.cycle.createPagerAnchor = function(i, el, $p, els, opts) {
        var a;
        if ($.isFunction(opts.pagerAnchorBuilder)) {
                a = opts.pagerAnchorBuilder(i,el);
                debug('pagerAnchorBuilder('+i+', el) returned: ' + a);
        }
        else
                a = '<a href="#">'+(i+1)+'</a>';
                
        if (!a)
                return;
        var $a = $(a);
        // don't reparent if anchor is in the dom
        if ($a.parents('body').length === 0) {
                var arr = [];
                if ($p.length > 1) {
                        $p.each(function() {
                                var $clone = $a.clone(true);
                                $(this).append($clone);
                                arr.push($clone[0]);
                        });
                        $a = $(arr);
                }
                else {
                        $a.appendTo($p);
                }
        }

        opts.pagerAnchors =  opts.pagerAnchors || [];
        opts.pagerAnchors.push($a);
        $a.bind(opts.pagerEvent, function(e) {
                e.preventDefault();
                opts.nextSlide = i;
                var p = opts.$cont[0], timeout = p.cycleTimeout;
                if (timeout) {
                        clearTimeout(timeout);
                        p.cycleTimeout = 0;
                }
                var cb = opts.onPagerEvent || opts.pagerClick; // pagerClick is deprecated
                if ($.isFunction(cb))
                        cb(opts.nextSlide, els[opts.nextSlide]);
                go(els,opts,1,opts.currSlide < i); // trigger the trans
//              return false; // <== allow bubble
        });
        
        if ( ! /^click/.test(opts.pagerEvent) && !opts.allowPagerClickBubble)
                $a.bind('click.cycle', function(){return false;}); // suppress click
        
        if (opts.pauseOnPagerHover)
                $a.hover(function() { opts.$cont[0].cyclePause++; }, function() { opts.$cont[0].cyclePause--; } );
};

// helper fn to calculate the number of slides between the current and the next
$.fn.cycle.hopsFromLast = function(opts, fwd) {
        var hops, l = opts.lastSlide, c = opts.currSlide;
        if (fwd)
                hops = c > l ? c - l : opts.slideCount - l;
        else
                hops = c < l ? l - c : l + opts.slideCount - c;
        return hops;
};

// fix clearType problems in ie6 by setting an explicit bg color
// (otherwise text slides look horrible during a fade transition)
function clearTypeFix($slides) {
        debug('applying clearType background-color hack');
        function hex(s) {
                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)); });
};

// reset common props before the next transition
$.fn.cycle.commonReset = function(curr,next,opts,w,h,rev) {
        $(opts.elements).not(curr).hide();
        opts.cssBefore.opacity = 1;
        opts.cssBefore.display = 'block';
        if (w !== false && next.cycleW > 0)
                opts.cssBefore.width = next.cycleW;
        if (h !== false && next.cycleH > 0)
                opts.cssBefore.height = next.cycleH;
        opts.cssAfter = opts.cssAfter || {};
        opts.cssAfter.display = 'none';
        $(curr).css('zIndex',opts.slideCount + (rev === true ? 1 : 0));
        $(next).css('zIndex',opts.slideCount + (rev === true ? 0 : 1));
};

// the actual fn for effecting a transition
$.fn.cycle.custom = function(curr, next, opts, cb, fwd, speedOverride) {
        var $l = $(curr), $n = $(next);
        var speedIn = opts.speedIn, speedOut = opts.speedOut, easeIn = opts.easeIn, easeOut = opts.easeOut;
        $n.css(opts.cssBefore);
        if (speedOverride) {
                if (typeof speedOverride == 'number')
                        speedIn = speedOut = speedOverride;
                else
                        speedIn = speedOut = 1;
                easeIn = easeOut = null;
        }
        var fn = function() {$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();
};

// transition definitions - only fade is defined here, transition pack defines the rest
$.fn.cycle.transitions = {
        fade: function($cont, $slides, opts) {
                $slides.not(':eq('+opts.currSlide+')').css('opacity',0);
                opts.before.push(function(curr,next,opts) {
                        $.fn.cycle.commonReset(curr,next,opts);
                        opts.cssBefore.opacity = 0;
                });
                opts.animIn        = { opacity: 1 };
                opts.animOut   = { opacity: 0 };
                opts.cssBefore = { top: 0, left: 0 };
        }
};

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

// override these globally if you like (they are all optional)
$.fn.cycle.defaults = {
        fx:                       'fade', // name of transition effect (or comma separated names, ex: 'fade,scrollUp,shuffle')
        timeout:           4000,  // milliseconds between slide transitions (0 to disable auto advance)
        timeoutFn:     null,  // callback for determining per-slide timeout value:  function(currSlideElement, nextSlideElement, options, forwardFlag)
        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,  // selector for element to use as event trigger for next slide
        prev:              null,  // selector for element to use as event trigger for previous slide
//      prevNextClick: null,  // @deprecated; please use onPrevNextEvent instead
        onPrevNextEvent: null,  // callback fn for prev/next events: function(isNext, zeroBasedSlideIndex, slideElement)
        prevNextEvent:'click.cycle',// event which drives the manual transition to the previous or next slide
        pager:             null,  // selector for element to use as pager container
        //pagerClick   null,  // @deprecated; please use onPagerEvent instead
        onPagerEvent:  null,  // callback fn for pager events: function(zeroBasedSlideIndex, slideElement)
        pagerEvent:       'click.cycle', // name of event which drives the pager navigation
        allowPagerClickBubble: false, // allows or prevents click event on pager anchors from bubbling
        pagerAnchorBuilder: null, // callback fn for building anchor links:  function(index, DOMelement)
        before:            null,  // transition callback (scope set to element to be shown):     function(currSlideElement, nextSlideElement, options, forwardFlag)
        after:             null,  // transition callback (scope set to element that was shown):  function(currSlideElement, nextSlideElement, options, forwardFlag)
        end:               null,  // callback invoked when the slideshow terminates (use with autostop or nowrap options): function(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: function(currSlideElement, nextSlideElement, options, afterCalback, forwardFlag)
        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
        containerResize: 1,       // resize container to fit largest slide
        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:         !$.support.opacity,  // true if clearType corrections should be applied (for IE)
        cleartypeNoBg: false, // set to true to disable extra cleartype fixing (leave false to force background color setting on slides)
        nowrap:            0,     // true to prevent slideshow from wrapping
        fastOnEvent:   0,         // force fast transitions when triggered manually (via pager or prev/next); value == time in ms
        randomizeEffects: 1,  // valid when multiple effects are used; true to make the effect sequence random
        rev:               0,    // causes animations to transition in reverse
        manualTrump:   true,  // causes manual transition to stop an active transition instead of being ignored
        requeueOnImageNotLoaded: true, // requeue the slideshow if any image slides are not yet loaded
        requeueTimeout: 250,  // ms delay for requeue
        activePagerClass: 'activeSlide', // class name used for the active pager link
        updateActivePagerLink: null // callback fn invoked to update the active pager link (adds/removes activePagerClass style)
};

})(jQuery);