/**
 * bxslider v4.2.12
 * copyright 2013-2015 steven wanderski
 * written while drinking belgian ales and listening to jazz
 * licensed under mit (http://opensource.org/licenses/mit)
 */

; (function ($) {

    var defaults = {

        // general
        mode: 'horizontal',
        slideselector: '',
        infiniteloop: true,
        hidecontrolonend: false,
        speed: 500,
        easing: null,
        slidemargin: 0,
        startslide: 0,
        randomstart: false,
        captions: false,
        ticker: false,
        tickerhover: false,
        adaptiveheight: false,
        adaptiveheightspeed: 500,
        video: false,
        usecss: true,
        preloadimages: 'visible',
        responsive: true,
        slidezindex: 50,
        wrapperclass: 'bx-wrapper',

        // touch
        touchenabled: true,
        swipethreshold: 50,
        onetoonetouch: true,
        preventdefaultswipex: true,
        preventdefaultswipey: false,

        // accessibility
        arialive: true,
        ariahidden: true,

        // keyboard
        keyboardenabled: false,

        // pager
        pager: true,
        pagertype: 'full',
        pagershortseparator: ' / ',
        pagerselector: null,
        buildpager: null,
        pagercustom: null,

        // controls
        controls: true,
        nexttext: 'next',
        prevtext: 'prev',
        nextselector: null,
        prevselector: null,
        autocontrols: false,
        starttext: 'start',
        stoptext: 'stop',
        autocontrolscombine: false,
        autocontrolsselector: null,

        // auto
        auto: false,
        pause: 4000,
        autostart: true,
        autodirection: 'next',
        stopautoonclick: false,
        autohover: false,
        autodelay: 0,
        autoslideforonepage: false,

        // carousel
        minslides: 1,
        maxslides: 1,
        moveslides: 0,
        slidewidth: 0,
        shrinkitems: false,

        // callbacks
        onsliderload: function () { return true; },
        onslidebefore: function () { return true; },
        onslideafter: function () { return true; },
        onslidenext: function () { return true; },
        onslideprev: function () { return true; },
        onsliderresize: function () { return true; }
    };

    $.fn.bxslider = function (options) {

        if (this.length === 0) {
            return this;
        }

        // support multiple elements
        if (this.length > 1) {
            this.each(function () {
                $(this).bxslider(options);
            });
            return this;
        }

        // create a namespace to be used throughout the plugin
        var slider = {},
            // set a reference to our slider element
            el = this,
            // get the original window dimens (thanks a lot ie)
            windowwidth = $(window).width(),
            windowheight = $(window).height();

        // return if slider is already initialized
        if ($(el).data('bxslider')) { return; }

        /**
         * ===================================================================================
         * = private functions
         * ===================================================================================
         */

        /**
         * initializes namespace settings to be used throughout plugin
         */
        var init = function () {
            // return if slider is already initialized
            if ($(el).data('bxslider')) { return; }
            // merge user-supplied options with the defaults
            slider.settings = $.extend({}, defaults, options);
            // parse slidewidth setting
            slider.settings.slidewidth = parseint(slider.settings.slidewidth);
            // store the original children
            slider.children = el.children(slider.settings.slideselector);
            // check if actual number of slides is less than minslides / maxslides
            if (slider.children.length < slider.settings.minslides) { slider.settings.minslides = slider.children.length; }
            if (slider.children.length < slider.settings.maxslides) { slider.settings.maxslides = slider.children.length; }
            // if random start, set the startslide setting to random number
            if (slider.settings.randomstart) { slider.settings.startslide = math.floor(math.random() * slider.children.length); }
            // store active slide information
            slider.active = { index: slider.settings.startslide };
            // store if the slider is in carousel mode (displaying / moving multiple slides)
            slider.carousel = slider.settings.minslides > 1 || slider.settings.maxslides > 1 ? true : false;
            // if carousel, force preloadimages = 'all'
            if (slider.carousel) { slider.settings.preloadimages = 'all'; }
            // calculate the min / max width thresholds based on min / max number of slides
            // used to setup and update carousel slides dimensions
            slider.minthreshold = (slider.settings.minslides * slider.settings.slidewidth) + ((slider.settings.minslides - 1) * slider.settings.slidemargin);
            slider.maxthreshold = (slider.settings.maxslides * slider.settings.slidewidth) + ((slider.settings.maxslides - 1) * slider.settings.slidemargin);
            // store the current state of the slider (if currently animating, working is true)
            slider.working = false;
            // initialize the controls object
            slider.controls = {};
            // initialize an auto interval
            slider.interval = null;
            // determine which property to use for transitions
            slider.animprop = slider.settings.mode === 'vertical' ? 'top' : 'left';
            // determine if hardware acceleration can be used
            slider.usingcss = slider.settings.usecss && slider.settings.mode !== 'fade' && (function () {
                // create our test div element
                var div = document.createelement('div'),
                    // css transition properties
                    props = ['webkitperspective', 'mozperspective', 'operspective', 'msperspective'];
                // test for each property
                for (var i = 0; i < props.length; i++) {
                    if (div.style[props[i]] !== undefined) {
                        slider.cssprefix = props[i].replace('perspective', '').tolowercase();
                        slider.animprop = '-' + slider.cssprefix + '-transform';
                        return true;
                    }
                }
                return false;
            }());
            // if vertical mode always make maxslides and minslides equal
            if (slider.settings.mode === 'vertical') { slider.settings.maxslides = slider.settings.minslides; }
            // save original style data
            el.data('origstyle', el.attr('style'));
            el.children(slider.settings.slideselector).each(function () {
                $(this).data('origstyle', $(this).attr('style'));
            });

            // perform all dom / css modifications
            setup();
        };

        /**
         * performs all dom and css modifications
         */
        var setup = function () {
            var preloadselector = slider.children.eq(slider.settings.startslide); // set the default preload selector (visible)

            // wrap el in a wrapper
            el.wrap('<div class="' + slider.settings.wrapperclass + '"><div class="bx-viewport"></div></div>');
            // store a namespace reference to .bx-viewport
            slider.viewport = el.parent();

            // add aria-live if the setting is enabled and ticker mode is disabled
            if (slider.settings.arialive && !slider.settings.ticker) {
                slider.viewport.attr('aria-live', 'polite');
            }
            // add a loading div to display while images are loading
            slider.loader = $('<div class="bx-loading" />');
            slider.viewport.prepend(slider.loader);
            // set el to a massive width, to hold any needed slides
            // also strip any margin and padding from el
            el.css({
                width: slider.settings.mode === 'horizontal' ? (slider.children.length * 1000 + 215) + '%' : 'auto',
                position: 'relative'
            });
            // if using css, add the easing property
            if (slider.usingcss && slider.settings.easing) {
                el.css('-' + slider.cssprefix + '-transition-timing-function', slider.settings.easing);
                // if not using css and no easing value was supplied, use the default js animation easing (swing)
            } else if (!slider.settings.easing) {
                slider.settings.easing = 'swing';
            }
            // make modifications to the viewport (.bx-viewport)
            slider.viewport.css({
                width: '100%',
                overflow: 'hidden',
                position: 'relative'
            });
            slider.viewport.parent().css({
                maxwidth: getviewportmaxwidth()
            });
            // apply css to all slider children
            slider.children.css({
                float: slider.settings.mode === 'horizontal' ? 'left' : 'none',
                liststyle: 'none',
                position: 'relative'
            });
            // apply the calculated width after the float is applied to prevent scrollbar interference
            slider.children.css('width', getslidewidth());
            // if slidemargin is supplied, add the css
            if (slider.settings.mode === 'horizontal' && slider.settings.slidemargin > 0) { slider.children.css('marginright', slider.settings.slidemargin); }
            if (slider.settings.mode === 'vertical' && slider.settings.slidemargin > 0) { slider.children.css('marginbottom', slider.settings.slidemargin); }
            // if "fade" mode, add positioning and z-index css
            if (slider.settings.mode === 'fade') {
                slider.children.css({
                    position: 'absolute',
                    zindex: 0,
                    display: 'none'
                });
                // prepare the z-index on the showing element
                slider.children.eq(slider.settings.startslide).css({ zindex: slider.settings.slidezindex, display: 'block' });
            }
            // create an element to contain all slider controls (pager, start / stop, etc)
            slider.controls.el = $('<div class="bx-controls" />');
            // if captions are requested, add them
            if (slider.settings.captions) { appendcaptions(); }
            // check if startslide is last slide
            slider.active.last = slider.settings.startslide === getpagerqty() - 1;
            // if video is true, set up the fitvids plugin
            if (slider.settings.video) { el.fitvids(); }
            if (slider.settings.preloadimages === 'all' || slider.settings.ticker) { preloadselector = slider.children; }
            // only check for control addition if not in "ticker" mode
            if (!slider.settings.ticker) {
                // if controls are requested, add them
                if (slider.settings.controls) { appendcontrols(); }
                // if auto is true, and auto controls are requested, add them
                if (slider.settings.auto && slider.settings.autocontrols) { appendcontrolsauto(); }
                // if pager is requested, add it
                if (slider.settings.pager) { appendpager(); }
                // if any control option is requested, add the controls wrapper
                if (slider.settings.controls || slider.settings.autocontrols || slider.settings.pager) { slider.viewport.after(slider.controls.el); }
                // if ticker mode, do not allow a pager
            } else {
                slider.settings.pager = false;
            }
            loadelements(preloadselector, start);
        };

        var loadelements = function (selector, callback) {
            var total = selector.find('img:not([src=""]), iframe').length,
                count = 0;
            if (total === 0) {
                callback();
                return;
            }
            selector.find('img:not([src=""]), iframe').each(function () {
                $(this).one('load error', function () {
                    if (++count === total) { callback(); }
                }).each(function () {
                    if (this.complete) { $(this).trigger('load'); }
                });
            });
        };

        /**
         * start the slider
         */
        var start = function () {
            // if infinite loop, prepare additional slides
            if (slider.settings.infiniteloop && slider.settings.mode !== 'fade' && !slider.settings.ticker) {
                var slice = slider.settings.mode === 'vertical' ? slider.settings.minslides : slider.settings.maxslides,
                    sliceappend = slider.children.slice(0, slice).clone(true).addclass('bx-clone'),
                    sliceprepend = slider.children.slice(-slice).clone(true).addclass('bx-clone');
                if (slider.settings.ariahidden) {
                    sliceappend.attr('aria-hidden', true);
                    sliceprepend.attr('aria-hidden', true);
                }
                el.append(sliceappend).prepend(sliceprepend);
            }
            // remove the loading dom element
            slider.loader.remove();
            // set the left / top position of "el"
            setslideposition();
            // if "vertical" mode, always use adaptiveheight to prevent odd behavior
            if (slider.settings.mode === 'vertical') { slider.settings.adaptiveheight = true; }
            // set the viewport height
            slider.viewport.height(getviewportheight());
            // make sure everything is positioned just right (same as a window resize)
            el.redrawslider();
            // onsliderload callback
            slider.settings.onsliderload.call(el, slider.active.index);
            // slider has been fully initialized
            slider.initialized = true;
            // bind the resize call to the window
            if (slider.settings.responsive) { $(window).bind('resize', resizewindow); }
            // if auto is true and has more than 1 page, start the show
            if (slider.settings.auto && slider.settings.autostart && (getpagerqty() > 1 || slider.settings.autoslideforonepage)) { initauto(); }
            // if ticker is true, start the ticker
            if (slider.settings.ticker) { initticker(); }
            // if pager is requested, make the appropriate pager link active
            if (slider.settings.pager) { updatepageractive(slider.settings.startslide); }
            // check for any updates to the controls (like hidecontrolonend updates)
            if (slider.settings.controls) { updatedirectioncontrols(); }
            // if touchenabled is true, setup the touch events
            if (slider.settings.touchenabled && !slider.settings.ticker) { inittouch(); }
            // if keyboardenabled is true, setup the keyboard events
            if (slider.settings.keyboardenabled && !slider.settings.ticker) {
                $(document).keydown(keypress);
            }
        };

        /**
         * returns the calculated height of the viewport, used to determine either adaptiveheight or the maxheight value
         */
        var getviewportheight = function () {
            var height = 0;
            // first determine which children (slides) should be used in our height calculation
            var children = $();
            // if mode is not "vertical" and adaptiveheight is false, include all children
            if (slider.settings.mode !== 'vertical' && !slider.settings.adaptiveheight) {
                children = slider.children;
            } else {
                // if not carousel, return the single active child
                if (!slider.carousel) {
                    children = slider.children.eq(slider.active.index);
                    // if carousel, return a slice of children
                } else {
                    // get the individual slide index
                    var currentindex = slider.settings.moveslides === 1 ? slider.active.index : slider.active.index * getmoveby();
                    // add the current slide to the children
                    children = slider.children.eq(currentindex);
                    // cycle through the remaining "showing" slides
                    for (i = 1; i <= slider.settings.maxslides - 1; i++) {
                        // if looped back to the start
                        if (currentindex + i >= slider.children.length) {
                            children = children.add(slider.children.eq(i - 1));
                        } else {
                            children = children.add(slider.children.eq(currentindex + i));
                        }
                    }
                }
            }
            // if "vertical" mode, calculate the sum of the heights of the children
            if (slider.settings.mode === 'vertical') {
                children.each(function (index) {
                    height += $(this).outerheight();
                });
                // add user-supplied margins
                if (slider.settings.slidemargin > 0) {
                    height += slider.settings.slidemargin * (slider.settings.minslides - 1);
                }
                // if not "vertical" mode, calculate the max height of the children
            } else {
                height = math.max.apply(math, children.map(function () {
                    return $(this).outerheight(false);
                }).get());
            }

            if (slider.viewport.css('box-sizing') === 'border-box') {
                height += parsefloat(slider.viewport.css('padding-top')) + parsefloat(slider.viewport.css('padding-bottom')) +
                    parsefloat(slider.viewport.css('border-top-width')) + parsefloat(slider.viewport.css('border-bottom-width'));
            } else if (slider.viewport.css('box-sizing') === 'padding-box') {
                height += parsefloat(slider.viewport.css('padding-top')) + parsefloat(slider.viewport.css('padding-bottom'));
            }

            return height;
        };

        /**
         * returns the calculated width to be used for the outer wrapper / viewport
         */
        var getviewportmaxwidth = function () {
            var width = '100%';
            if (slider.settings.slidewidth > 0) {
                if (slider.settings.mode === 'horizontal') {
                    width = (slider.settings.maxslides * slider.settings.slidewidth) + ((slider.settings.maxslides - 1) * slider.settings.slidemargin);
                } else {
                    width = slider.settings.slidewidth;
                }
            }
            return width;
        };

        /**
         * returns the calculated width to be applied to each slide
         */
        var getslidewidth = function () {
            var newelwidth = slider.settings.slidewidth, // start with any user-supplied slide width
                wrapwidth = slider.viewport.width();    // get the current viewport width
            // if slide width was not supplied, or is larger than the viewport use the viewport width
            if (slider.settings.slidewidth === 0 ||
                (slider.settings.slidewidth > wrapwidth && !slider.carousel) ||
                slider.settings.mode === 'vertical') {
                newelwidth = wrapwidth;
                // if carousel, use the thresholds to determine the width
            } else if (slider.settings.maxslides > 1 && slider.settings.mode === 'horizontal') {
                if (wrapwidth > slider.maxthreshold) {
                    return newelwidth;
                } else if (wrapwidth < slider.minthreshold) {
                    newelwidth = (wrapwidth - (slider.settings.slidemargin * (slider.settings.minslides - 1))) / slider.settings.minslides;
                } else if (slider.settings.shrinkitems) {
                    newelwidth = math.floor((wrapwidth + slider.settings.slidemargin) / (math.ceil((wrapwidth + slider.settings.slidemargin) / (newelwidth + slider.settings.slidemargin))) - slider.settings.slidemargin);
                }
            }
            return newelwidth;
        };

        /**
         * returns the number of slides currently visible in the viewport (includes partially visible slides)
         */
        var getnumberslidesshowing = function () {
            var slidesshowing = 1,
                childwidth = null;
            if (slider.settings.mode === 'horizontal' && slider.settings.slidewidth > 0) {
                // if viewport is smaller than minthreshold, return minslides
                if (slider.viewport.width() < slider.minthreshold) {
                    slidesshowing = slider.settings.minslides;
                    // if viewport is larger than maxthreshold, return maxslides
                } else if (slider.viewport.width() > slider.maxthreshold) {
                    slidesshowing = slider.settings.maxslides;
                    // if viewport is between min / max thresholds, divide viewport width by first child width
                } else {
                    childwidth = slider.children.first().width() + slider.settings.slidemargin;
                    slidesshowing = math.floor((slider.viewport.width() +
                        slider.settings.slidemargin) / childwidth);
                }
                // if "vertical" mode, slides showing will always be minslides
            } else if (slider.settings.mode === 'vertical') {
                slidesshowing = slider.settings.minslides;
            }
            return slidesshowing;
        };

        /**
         * returns the number of pages (one full viewport of slides is one "page")
         */
        var getpagerqty = function () {
            var pagerqty = 0,
                breakpoint = 0,
                counter = 0;
            // if moveslides is specified by the user
            if (slider.settings.moveslides > 0) {
                if (slider.settings.infiniteloop) {
                    pagerqty = math.ceil(slider.children.length / getmoveby());
                } else {
                    // when breakpoint goes above children length, counter is the number of pages
                    while (breakpoint < slider.children.length) {
                        ++pagerqty;
                        breakpoint = counter + getnumberslidesshowing();
                        counter += slider.settings.moveslides <= getnumberslidesshowing() ? slider.settings.moveslides : getnumberslidesshowing();
                    }
                }
                // if moveslides is 0 (auto) divide children length by sides showing, then round up
            } else {
                pagerqty = math.ceil(slider.children.length / getnumberslidesshowing());
            }
            return pagerqty;
        };

        /**
         * returns the number of individual slides by which to shift the slider
         */
        var getmoveby = function () {
            // if moveslides was set by the user and moveslides is less than number of slides showing
            if (slider.settings.moveslides > 0 && slider.settings.moveslides <= getnumberslidesshowing()) {
                return slider.settings.moveslides;
            }
            // if moveslides is 0 (auto)
            return getnumberslidesshowing();
        };

        /**
         * sets the slider's (el) left or top position
         */
        var setslideposition = function () {
            var position, lastchild, lastshowingindex;
            // if last slide, not infinite loop, and number of children is larger than specified maxslides
            if (slider.children.length > slider.settings.maxslides && slider.active.last && !slider.settings.infiniteloop) {
                if (slider.settings.mode === 'horizontal') {
                    // get the last child's position
                    lastchild = slider.children.last();
                    position = lastchild.position();
                    // set the left position
                    setpositionproperty(-(position.left - (slider.viewport.width() - lastchild.outerwidth())), 'reset', 0);
                } else if (slider.settings.mode === 'vertical') {
                    // get the last showing index's position
                    lastshowingindex = slider.children.length - slider.settings.minslides;
                    position = slider.children.eq(lastshowingindex).position();
                    // set the top position
                    setpositionproperty(-position.top, 'reset', 0);
                }
                // if not last slide
            } else {
                // get the position of the first showing slide
                position = slider.children.eq(slider.active.index * getmoveby()).position();
                // check for last slide
                if (slider.active.index === getpagerqty() - 1) { slider.active.last = true; }
                // set the respective position
                if (position !== undefined) {
                    if (slider.settings.mode === 'horizontal') { setpositionproperty(-position.left, 'reset', 0); }
                    else if (slider.settings.mode === 'vertical') { setpositionproperty(-position.top, 'reset', 0); }
                }
            }
        };

        /**
         * sets the el's animating property position (which in turn will sometimes animate el).
         * if using css, sets the transform property. if not using css, sets the top / left property.
         *
         * @param value (int)
         *  - the animating property's value
         *
         * @param type (string) 'slide', 'reset', 'ticker'
         *  - the type of instance for which the function is being
         *
         * @param duration (int)
         *  - the amount of time (in ms) the transition should occupy
         *
         * @param params (array) optional
         *  - an optional parameter containing any variables that need to be passed in
         */
        var setpositionproperty = function (value, type, duration, params) {
            var animateobj, propvalue;
            // use css transform
            if (slider.usingcss) {
                // determine the translate3d value
                propvalue = slider.settings.mode === 'vertical' ? 'translate3d(0, ' + value + 'px, 0)' : 'translate3d(' + value + 'px, 0, 0)';
                // add the css transition-duration
                el.css('-' + slider.cssprefix + '-transition-duration', duration / 1000 + 's');
                if (type === 'slide') {
                    // set the property value
                    el.css(slider.animprop, propvalue);
                    if (duration !== 0) {
                        // bind a callback method - executes when css transition completes
                        el.bind('transitionend webkittransitionend otransitionend mstransitionend', function (e) {
                            //make sure it's the correct one
                            if (!$(e.target).is(el)) { return; }
                            // unbind the callback
                            el.unbind('transitionend webkittransitionend otransitionend mstransitionend');
                            updateafterslidetransition();
                        });
                    } else { //duration = 0
                        updateafterslidetransition();
                    }
                } else if (type === 'reset') {
                    el.css(slider.animprop, propvalue);
                } else if (type === 'ticker') {
                    // make the transition use 'linear'
                    el.css('-' + slider.cssprefix + '-transition-timing-function', 'linear');
                    el.css(slider.animprop, propvalue);
                    if (duration !== 0) {
                        el.bind('transitionend webkittransitionend otransitionend mstransitionend', function (e) {
                            //make sure it's the correct one
                            if (!$(e.target).is(el)) { return; }
                            // unbind the callback
                            el.unbind('transitionend webkittransitionend otransitionend mstransitionend');
                            // reset the position
                            setpositionproperty(params.resetvalue, 'reset', 0);
                            // start the loop again
                            tickerloop();
                        });
                    } else { //duration = 0
                        setpositionproperty(params.resetvalue, 'reset', 0);
                        tickerloop();
                    }
                }
                // use js animate
            } else {
                animateobj = {};
                animateobj[slider.animprop] = value;
                if (type === 'slide') {
                    el.animate(animateobj, duration, slider.settings.easing, function () {
                        updateafterslidetransition();
                    });
                } else if (type === 'reset') {
                    el.css(slider.animprop, value);
                } else if (type === 'ticker') {
                    el.animate(animateobj, duration, 'linear', function () {
                        setpositionproperty(params.resetvalue, 'reset', 0);
                        // run the recursive loop after animation
                        tickerloop();
                    });
                }
            }
        };

        /**
         * populates the pager with proper amount of pages
         */
        var populatepager = function () {
            var pagerhtml = '',
                linkcontent = '',
                pagerqty = getpagerqty();
            // loop through each pager item
            for (var i = 0; i < pagerqty; i++) {
                linkcontent = '';
                // if a buildpager function is supplied, use it to get pager link value, else use index + 1
                if (slider.settings.buildpager && $.isfunction(slider.settings.buildpager) || slider.settings.pagercustom) {
                    linkcontent = slider.settings.buildpager(i);
                    slider.pagerel.addclass('bx-custom-pager');
                } else {
                    linkcontent = i + 1;
                    slider.pagerel.addclass('bx-default-pager');
                }
                // var linkcontent = slider.settings.buildpager && $.isfunction(slider.settings.buildpager) ? slider.settings.buildpager(i) : i + 1;
                // add the markup to the string
                pagerhtml += '<div class="bx-pager-item"><a href="" data-slide-index="' + i + '" class="bx-pager-link">' + linkcontent + '</a></div>';
            }
            // populate the pager element with pager links
            slider.pagerel.html(pagerhtml);
        };

        /**
         * appends the pager to the controls element
         */
        var appendpager = function () {
            if (!slider.settings.pagercustom) {
                // create the pager dom element
                slider.pagerel = $('<div class="bx-pager" />');
                // if a pager selector was supplied, populate it with the pager
                if (slider.settings.pagerselector) {
                    $(slider.settings.pagerselector).html(slider.pagerel);
                    // if no pager selector was supplied, add it after the wrapper
                } else {
                    slider.controls.el.addclass('bx-has-pager').append(slider.pagerel);
                }
                // populate the pager
                populatepager();
            } else {
                slider.pagerel = $(slider.settings.pagercustom);
            }
            // assign the pager click binding
            slider.pagerel.on('click touchend', 'a', clickpagerbind);
        };

        /**
         * appends prev / next controls to the controls element
         */
        var appendcontrols = function () {
            slider.controls.next = $('<a class="bx-next" href="">' + slider.settings.nexttext + '</a>');
            slider.controls.prev = $('<a class="bx-prev" href="">' + slider.settings.prevtext + '</a>');
            // bind click actions to the controls
            slider.controls.next.bind('click touchend', clicknextbind);
            slider.controls.prev.bind('click touchend', clickprevbind);
            // if nextselector was supplied, populate it
            if (slider.settings.nextselector) {
                $(slider.settings.nextselector).append(slider.controls.next);
            }
            // if prevselector was supplied, populate it
            if (slider.settings.prevselector) {
                $(slider.settings.prevselector).append(slider.controls.prev);
            }
            // if no custom selectors were supplied
            if (!slider.settings.nextselector && !slider.settings.prevselector) {
                // add the controls to the dom
                slider.controls.directionel = $('<div class="bx-controls-direction" />');
                // add the control elements to the directionel
                slider.controls.directionel.append(slider.controls.prev).append(slider.controls.next);
                // slider.viewport.append(slider.controls.directionel);
                slider.controls.el.addclass('bx-has-controls-direction').append(slider.controls.directionel);
            }
        };

        /**
         * appends start / stop auto controls to the controls element
         */
        var appendcontrolsauto = function () {
            slider.controls.start = $('<div class="bx-controls-auto-item"><a class="bx-start" href="">' + slider.settings.starttext + '</a></div>');
            slider.controls.stop = $('<div class="bx-controls-auto-item"><a class="bx-stop" href="">' + slider.settings.stoptext + '</a></div>');
            // add the controls to the dom
            slider.controls.autoel = $('<div class="bx-controls-auto" />');
            // bind click actions to the controls
            slider.controls.autoel.on('click', '.bx-start', clickstartbind);
            slider.controls.autoel.on('click', '.bx-stop', clickstopbind);
            // if autocontrolscombine, insert only the "start" control
            if (slider.settings.autocontrolscombine) {
                slider.controls.autoel.append(slider.controls.start);
                // if autocontrolscombine is false, insert both controls
            } else {
                slider.controls.autoel.append(slider.controls.start).append(slider.controls.stop);
            }
            // if auto controls selector was supplied, populate it with the controls
            if (slider.settings.autocontrolsselector) {
                $(slider.settings.autocontrolsselector).html(slider.controls.autoel);
                // if auto controls selector was not supplied, add it after the wrapper
            } else {
                slider.controls.el.addclass('bx-has-controls-auto').append(slider.controls.autoel);
            }
            // update the auto controls
            updateautocontrols(slider.settings.autostart ? 'stop' : 'start');
        };

        /**
         * appends image captions to the dom
         */
        var appendcaptions = function () {
            // cycle through each child
            slider.children.each(function (index) {
                // get the image title attribute
                var title = $(this).find('img:first').attr('title');
                // append the caption
                if (title !== undefined && ('' + title).length) {
                    $(this).append('<div class="bx-caption"><span>' + title + '</span></div>');
                }
            });
        };

        /**
         * click next binding
         *
         * @param e (event)
         *  - dom event object
         */
        var clicknextbind = function (e) {
            e.preventdefault();
            if (slider.controls.el.hasclass('disabled')) { return; }
            // if auto show is running, stop it
            if (slider.settings.auto && slider.settings.stopautoonclick) { el.stopauto(); }
            el.gotonextslide();
        };

        /**
         * click prev binding
         *
         * @param e (event)
         *  - dom event object
         */
        var clickprevbind = function (e) {
            e.preventdefault();
            if (slider.controls.el.hasclass('disabled')) { return; }
            // if auto show is running, stop it
            if (slider.settings.auto && slider.settings.stopautoonclick) { el.stopauto(); }
            el.gotoprevslide();
        };

        /**
         * click start binding
         *
         * @param e (event)
         *  - dom event object
         */
        var clickstartbind = function (e) {
            el.startauto();
            e.preventdefault();
        };

        /**
         * click stop binding
         *
         * @param e (event)
         *  - dom event object
         */
        var clickstopbind = function (e) {
            el.stopauto();
            e.preventdefault();
        };

        /**
         * click pager binding
         *
         * @param e (event)
         *  - dom event object
         */
        var clickpagerbind = function (e) {
            var pagerlink, pagerindex;
            e.preventdefault();
            if (slider.controls.el.hasclass('disabled')) {
                return;
            }
            // if auto show is running, stop it
            if (slider.settings.auto && slider.settings.stopautoonclick) { el.stopauto(); }
            pagerlink = $(e.currenttarget);
            if (pagerlink.attr('data-slide-index') !== undefined) {
                pagerindex = parseint(pagerlink.attr('data-slide-index'));
                // if clicked pager link is not active, continue with the gotoslide call
                if (pagerindex !== slider.active.index) { el.gotoslide(pagerindex); }
            }
        };

        /**
         * updates the pager links with an active class
         *
         * @param slideindex (int)
         *  - index of slide to make active
         */
        var updatepageractive = function (slideindex) {
            // if "short" pager type
            var len = slider.children.length; // nb of children
            if (slider.settings.pagertype === 'short') {
                if (slider.settings.maxslides > 1) {
                    len = math.ceil(slider.children.length / slider.settings.maxslides);
                }
                slider.pagerel.html((slideindex + 1) + slider.settings.pagershortseparator + len);
                return;
            }
            // remove all pager active classes
            slider.pagerel.find('a').removeclass('active');
            // apply the active class for all pagers
            slider.pagerel.each(function (i, el) { $(el).find('a').eq(slideindex).addclass('active'); });
        };

        /**
         * performs needed actions after a slide transition
         */
        var updateafterslidetransition = function () {
            // if infinite loop is true
            if (slider.settings.infiniteloop) {
                var position = '';
                // first slide
                if (slider.active.index === 0) {
                    // set the new position
                    position = slider.children.eq(0).position();
                    // carousel, last slide
                } else if (slider.active.index === getpagerqty() - 1 && slider.carousel) {
                    position = slider.children.eq((getpagerqty() - 1) * getmoveby()).position();
                    // last slide
                } else if (slider.active.index === slider.children.length - 1) {
                    position = slider.children.eq(slider.children.length - 1).position();
                }
                if (position) {
                    if (slider.settings.mode === 'horizontal') { setpositionproperty(-position.left, 'reset', 0); }
                    else if (slider.settings.mode === 'vertical') { setpositionproperty(-position.top, 'reset', 0); }
                }
            }
            // declare that the transition is complete
            slider.working = false;
            // onslideafter callback
            slider.settings.onslideafter.call(el, slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);
        };

        /**
         * updates the auto controls state (either active, or combined switch)
         *
         * @param state (string) "start", "stop"
         *  - the new state of the auto show
         */
        var updateautocontrols = function (state) {
            // if autocontrolscombine is true, replace the current control with the new state
            if (slider.settings.autocontrolscombine) {
                slider.controls.autoel.html(slider.controls[state]);
                // if autocontrolscombine is false, apply the "active" class to the appropriate control
            } else {
                slider.controls.autoel.find('a').removeclass('active');
                slider.controls.autoel.find('a:not(.bx-' + state + ')').addclass('active');
            }
        };

        /**
         * updates the direction controls (checks if either should be hidden)
         */
        var updatedirectioncontrols = function () {
            if (getpagerqty() === 1) {
                slider.controls.prev.addclass('disabled');
                slider.controls.next.addclass('disabled');
            } else if (!slider.settings.infiniteloop && slider.settings.hidecontrolonend) {
                // if first slide
                if (slider.active.index === 0) {
                    slider.controls.prev.addclass('disabled');
                    slider.controls.next.removeclass('disabled');
                    // if last slide
                } else if (slider.active.index === getpagerqty() - 1) {
                    slider.controls.next.addclass('disabled');
                    slider.controls.prev.removeclass('disabled');
                    // if any slide in the middle
                } else {
                    slider.controls.prev.removeclass('disabled');
                    slider.controls.next.removeclass('disabled');
                }
            }
        };

        /**
         * initializes the auto process
         */
        var initauto = function () {
            // if autodelay was supplied, launch the auto show using a settimeout() call
            if (slider.settings.autodelay > 0) {
                var timeout = settimeout(el.startauto, slider.settings.autodelay);
                // if autodelay was not supplied, start the auto show normally
            } else {
                el.startauto();

                //add focus and blur events to ensure its running if timeout gets paused
                $(window).focus(function () {
                    el.startauto();
                }).blur(function () {
                    el.stopauto();
                });
            }
            // if autohover is requested
            if (slider.settings.autohover) {
                // on el hover
                el.hover(function () {
                    // if the auto show is currently playing (has an active interval)
                    if (slider.interval) {
                        // stop the auto show and pass true argument which will prevent control update
                        el.stopauto(true);
                        // create a new autopaused value which will be used by the relative "mouseout" event
                        slider.autopaused = true;
                    }
                }, function () {
                    // if the autopaused value was created be the prior "mouseover" event
                    if (slider.autopaused) {
                        // start the auto show and pass true argument which will prevent control update
                        el.startauto(true);
                        // reset the autopaused value
                        slider.autopaused = null;
                    }
                });
            }
        };

        /**
         * initializes the ticker process
         */
        var initticker = function () {
            var startposition = 0,
                position, transform, value, idx, ratio, property, newspeed, totaldimens;
            // if autodirection is "next", append a clone of the entire slider
            if (slider.settings.autodirection === 'next') {
                el.append(slider.children.clone().addclass('bx-clone'));
                // if autodirection is "prev", prepend a clone of the entire slider, and set the left position
            } else {
                el.prepend(slider.children.clone().addclass('bx-clone'));
                position = slider.children.first().position();
                startposition = slider.settings.mode === 'horizontal' ? -position.left : -position.top;
            }
            setpositionproperty(startposition, 'reset', 0);
            // do not allow controls in ticker mode
            slider.settings.pager = false;
            slider.settings.controls = false;
            slider.settings.autocontrols = false;
            // if autohover is requested
            if (slider.settings.tickerhover) {
                if (slider.usingcss) {
                    idx = slider.settings.mode === 'horizontal' ? 4 : 5;
                    slider.viewport.hover(function () {
                        transform = el.css('-' + slider.cssprefix + '-transform');
                        value = parsefloat(transform.split(',')[idx]);
                        setpositionproperty(value, 'reset', 0);
                    }, function () {
                        totaldimens = 0;
                        slider.children.each(function (index) {
                            totaldimens += slider.settings.mode === 'horizontal' ? $(this).outerwidth(true) : $(this).outerheight(true);
                        });
                        // calculate the speed ratio (used to determine the new speed to finish the paused animation)
                        ratio = slider.settings.speed / totaldimens;
                        // determine which property to use
                        property = slider.settings.mode === 'horizontal' ? 'left' : 'top';
                        // calculate the new speed
                        newspeed = ratio * (totaldimens - (math.abs(parseint(value))));
                        tickerloop(newspeed);
                    });
                } else {
                    // on el hover
                    slider.viewport.hover(function () {
                        el.stop();
                    }, function () {
                        // calculate the total width of children (used to calculate the speed ratio)
                        totaldimens = 0;
                        slider.children.each(function (index) {
                            totaldimens += slider.settings.mode === 'horizontal' ? $(this).outerwidth(true) : $(this).outerheight(true);
                        });
                        // calculate the speed ratio (used to determine the new speed to finish the paused animation)
                        ratio = slider.settings.speed / totaldimens;
                        // determine which property to use
                        property = slider.settings.mode === 'horizontal' ? 'left' : 'top';
                        // calculate the new speed
                        newspeed = ratio * (totaldimens - (math.abs(parseint(el.css(property)))));
                        tickerloop(newspeed);
                    });
                }
            }
            // start the ticker loop
            tickerloop();
        };

        /**
         * runs a continuous loop, news ticker-style
         */
        var tickerloop = function (resumespeed) {
            var speed = resumespeed ? resumespeed : slider.settings.speed,
                position = { left: 0, top: 0 },
                reset = { left: 0, top: 0 },
                animateproperty, resetvalue, params;

            // if "next" animate left position to last child, then reset left to 0
            if (slider.settings.autodirection === 'next') {
                position = el.find('.bx-clone').first().position();
                // if "prev" animate left position to 0, then reset left to first non-clone child
            } else {
                reset = slider.children.first().position();
            }
            animateproperty = slider.settings.mode === 'horizontal' ? -position.left : -position.top;
            resetvalue = slider.settings.mode === 'horizontal' ? -reset.left : -reset.top;
            params = { resetvalue: resetvalue };
            setpositionproperty(animateproperty, 'ticker', speed, params);
        };

        /**
         * check if el is on screen
         */
        var isonscreen = function (el) {
            var win = $(window),
                viewport = {
                    top: win.scrolltop(),
                    left: win.scrollleft()
                },
                bounds = el.offset();

            viewport.right = viewport.left + win.width();
            viewport.bottom = viewport.top + win.height();
            bounds.right = bounds.left + el.outerwidth();
            bounds.bottom = bounds.top + el.outerheight();

            return (!(viewport.right < bounds.left || viewport.left > bounds.right || viewport.bottom < bounds.top || viewport.top > bounds.bottom));
        };

        /**
         * initializes keyboard events
         */
        var keypress = function (e) {
            var activeelementtag = document.activeelement.tagname.tolowercase(),
                tagfilters = 'input|textarea',
                p = new regexp(activeelementtag, ['i']),
                result = p.exec(tagfilters);

            if (result == null && isonscreen(el)) {
                if (e.keycode === 39) {
                    clicknextbind(e);
                    return false;
                } else if (e.keycode === 37) {
                    clickprevbind(e);
                    return false;
                }
            }
        };

        /**
         * initializes touch events
         */
        var inittouch = function () {
            // initialize object to contain all touch values
            slider.touch = {
                start: { x: 0, y: 0 },
                end: { x: 0, y: 0 }
            };
            slider.viewport.bind('touchstart mspointerdown pointerdown', ontouchstart);

            //for browsers that have implemented pointer events and fire a click after
            //every pointerup regardless of whether pointerup is on same screen location as pointerdown or not
            slider.viewport.on('click', '.bxslider a', function (e) {
                if (slider.viewport.hasclass('click-disabled')) {
                    e.preventdefault();
                    slider.viewport.removeclass('click-disabled');
                }
            });
        };

        /**
         * event handler for "touchstart"
         *
         * @param e (event)
         *  - dom event object
         */
        var ontouchstart = function (e) {
            //disable slider controls while user is interacting with slides to avoid slider freeze that happens on touch devices when a slide swipe happens immediately after interacting with slider controls
            slider.controls.el.addclass('disabled');

            if (slider.working) {
                e.preventdefault();
                slider.controls.el.removeclass('disabled');
            } else {
                // record the original position when touch starts
                slider.touch.originalpos = el.position();
                var orig = e.originalevent,
                    touchpoints = (typeof orig.changedtouches !== 'undefined') ? orig.changedtouches : [orig];
                // record the starting touch x, y coordinates
                slider.touch.start.x = touchpoints[0].pagex;
                slider.touch.start.y = touchpoints[0].pagey;

                if (slider.viewport.get(0).setpointercapture) {
                    slider.pointerid = orig.pointerid;
                    slider.viewport.get(0).setpointercapture(slider.pointerid);
                }
                // bind a "touchmove" event to the viewport
                slider.viewport.bind('touchmove mspointermove pointermove', ontouchmove);
                // bind a "touchend" event to the viewport
                slider.viewport.bind('touchend mspointerup pointerup', ontouchend);
                slider.viewport.bind('mspointercancel pointercancel', onpointercancel);
            }
        };

        /**
         * cancel pointer for windows phone
         *
         * @param e (event)
         *  - dom event object
         */
        var onpointercancel = function (e) {
            /* onpointercancel handler is needed to deal with situations when a touchend
            doesn't fire after a touchstart (this happens on windows phones only) */
            setpositionproperty(slider.touch.originalpos.left, 'reset', 0);

            //remove handlers
            slider.controls.el.removeclass('disabled');
            slider.viewport.unbind('mspointercancel pointercancel', onpointercancel);
            slider.viewport.unbind('touchmove mspointermove pointermove', ontouchmove);
            slider.viewport.unbind('touchend mspointerup pointerup', ontouchend);
            if (slider.viewport.get(0).releasepointercapture) {
                slider.viewport.get(0).releasepointercapture(slider.pointerid);
            }
        };

        /**
         * event handler for "touchmove"
         *
         * @param e (event)
         *  - dom event object
         */
        var ontouchmove = function (e) {
            var orig = e.originalevent,
                touchpoints = (typeof orig.changedtouches !== 'undefined') ? orig.changedtouches : [orig],
                // if scrolling on y axis, do not prevent default
                xmovement = math.abs(touchpoints[0].pagex - slider.touch.start.x),
                ymovement = math.abs(touchpoints[0].pagey - slider.touch.start.y),
                value = 0,
                change = 0;

            // x axis swipe
            if ((xmovement * 3) > ymovement && slider.settings.preventdefaultswipex) {
                e.preventdefault();
                // y axis swipe
            } else if ((ymovement * 3) > xmovement && slider.settings.preventdefaultswipey) {
                e.preventdefault();
            }
            if (slider.settings.mode !== 'fade' && slider.settings.onetoonetouch) {
                // if horizontal, drag along x axis
                if (slider.settings.mode === 'horizontal') {
                    change = touchpoints[0].pagex - slider.touch.start.x;
                    value = slider.touch.originalpos.left + change;
                    // if vertical, drag along y axis
                } else {
                    change = touchpoints[0].pagey - slider.touch.start.y;
                    value = slider.touch.originalpos.top + change;
                }
                setpositionproperty(value, 'reset', 0);
            }
        };

        /**
         * event handler for "touchend"
         *
         * @param e (event)
         *  - dom event object
         */
        var ontouchend = function (e) {
            slider.viewport.unbind('touchmove mspointermove pointermove', ontouchmove);
            //enable slider controls as soon as user stops interacing with slides
            slider.controls.el.removeclass('disabled');
            var orig = e.originalevent,
                touchpoints = (typeof orig.changedtouches !== 'undefined') ? orig.changedtouches : [orig],
                value = 0,
                distance = 0;
            // record end x, y positions
            slider.touch.end.x = touchpoints[0].pagex;
            slider.touch.end.y = touchpoints[0].pagey;
            // if fade mode, check if absolute x distance clears the threshold
            if (slider.settings.mode === 'fade') {
                distance = math.abs(slider.touch.start.x - slider.touch.end.x);
                if (distance >= slider.settings.swipethreshold) {
                    if (slider.touch.start.x > slider.touch.end.x) {
                        el.gotonextslide();
                    } else {
                        el.gotoprevslide();
                    }
                    el.stopauto();
                }
                // not fade mode
            } else {
                // calculate distance and el's animate property
                if (slider.settings.mode === 'horizontal') {
                    distance = slider.touch.end.x - slider.touch.start.x;
                    value = slider.touch.originalpos.left;
                } else {
                    distance = slider.touch.end.y - slider.touch.start.y;
                    value = slider.touch.originalpos.top;
                }
                // if not infinite loop and first / last slide, do not attempt a slide transition
                if (!slider.settings.infiniteloop && ((slider.active.index === 0 && distance > 0) || (slider.active.last && distance < 0))) {
                    setpositionproperty(value, 'reset', 200);
                } else {
                    // check if distance clears threshold
                    if (math.abs(distance) >= slider.settings.swipethreshold) {
                        if (distance < 0) {
                            el.gotonextslide();
                        } else {
                            el.gotoprevslide();
                        }
                        el.stopauto();
                    } else {
                        // el.animate(property, 200);
                        setpositionproperty(value, 'reset', 200);
                    }
                }
            }
            slider.viewport.unbind('touchend mspointerup pointerup', ontouchend);
            if (slider.viewport.get(0).releasepointercapture) {
                slider.viewport.get(0).releasepointercapture(slider.pointerid);
            }
        };

        /**
         * window resize event callback
         */
        var resizewindow = function (e) {
            // don't do anything if slider isn't initialized.
            if (!slider.initialized) { return; }
            // delay if slider working.
            if (slider.working) {
                window.settimeout(resizewindow, 10);
            } else {
                // get the new window dimens (again, thank you ie)
                var windowwidthnew = $(window).width(),
                    windowheightnew = $(window).height();
                // make sure that it is a true window resize
                // *we must check this because our dinosaur friend ie fires a window resize event when certain dom elements
                // are resized. can you just die already?*
                if (windowwidth !== windowwidthnew || windowheight !== windowheightnew) {
                    // set the new window dimens
                    windowwidth = windowwidthnew;
                    windowheight = windowheightnew;
                    // update all dynamic elements
                    el.redrawslider();
                    // call user resize handler
                    slider.settings.onsliderresize.call(el, slider.active.index);
                }
            }
        };

        /**
         * adds an aria-hidden=true attribute to each element
         *
         * @param startvisibleindex (int)
         *  - the first visible element's index
         */
        var applyariahiddenattributes = function (startvisibleindex) {
            var numberofslidesshowing = getnumberslidesshowing();
            // only apply attributes if the setting is enabled and not in ticker mode
            if (slider.settings.ariahidden && !slider.settings.ticker) {
                // add aria-hidden=true to all elements
                slider.children.attr('aria-hidden', 'true');
                // get the visible elements and change to aria-hidden=false
                slider.children.slice(startvisibleindex, startvisibleindex + numberofslidesshowing).attr('aria-hidden', 'false');
            }
        };

        /**
         * returns index according to present page range
         *
         * @param slideondex (int)
         *  - the desired slide index
         */
        var setslideindex = function (slideindex) {
            if (slideindex < 0) {
                if (slider.settings.infiniteloop) {
                    return getpagerqty() - 1;
                } else {
                    //we don't go to undefined slides
                    return slider.active.index;
                }
                // if slideindex is greater than children length, set active index to 0 (this happens during infinite loop)
            } else if (slideindex >= getpagerqty()) {
                if (slider.settings.infiniteloop) {
                    return 0;
                } else {
                    //we don't move to undefined pages
                    return slider.active.index;
                }
                // set active index to requested slide
            } else {
                return slideindex;
            }
        };

        /**
         * ===================================================================================
         * = public functions
         * ===================================================================================
         */

        /**
         * performs slide transition to the specified slide
         *
         * @param slideindex (int)
         *  - the destination slide's index (zero-based)
         *
         * @param direction (string)
         *  - internal use only - the direction of travel ("prev" / "next")
         */
        el.gotoslide = function (slideindex, direction) {
            // onslidebefore, onslidenext, onslideprev callbacks
            // allow transition canceling based on returned value
            var performtransition = true,
                moveby = 0,
                position = { left: 0, top: 0 },
                lastchild = null,
                lastshowingindex, eq, value, requestel;
            // store the old index
            slider.oldindex = slider.active.index;
            //set new index
            slider.active.index = setslideindex(slideindex);

            // if plugin is currently in motion, ignore request
            if (slider.working || slider.active.index === slider.oldindex) { return; }
            // declare that plugin is in motion
            slider.working = true;

            performtransition = slider.settings.onslidebefore.call(el, slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);

            // if transitions canceled, reset and return
            if (typeof (performtransition) !== 'undefined' && !performtransition) {
                slider.active.index = slider.oldindex; // restore old index
                slider.working = false; // is not in motion
                return;
            }

            if (direction === 'next') {
                // prevent canceling in future functions or lack there-of from negating previous commands to cancel
                if (!slider.settings.onslidenext.call(el, slider.children.eq(slider.active.index), slider.oldindex, slider.active.index)) {
                    performtransition = false;
                }
            } else if (direction === 'prev') {
                // prevent canceling in future functions or lack there-of from negating previous commands to cancel
                if (!slider.settings.onslideprev.call(el, slider.children.eq(slider.active.index), slider.oldindex, slider.active.index)) {
                    performtransition = false;
                }
            }

            // check if last slide
            slider.active.last = slider.active.index >= getpagerqty() - 1;
            // update the pager with active class
            if (slider.settings.pager || slider.settings.pagercustom) { updatepageractive(slider.active.index); }
            // // check for direction control update
            if (slider.settings.controls) { updatedirectioncontrols(); }
            // if slider is set to mode: "fade"
            if (slider.settings.mode === 'fade') {
                // if adaptiveheight is true and next height is different from current height, animate to the new height
                if (slider.settings.adaptiveheight && slider.viewport.height() !== getviewportheight()) {
                    slider.viewport.animate({ height: getviewportheight() }, slider.settings.adaptiveheightspeed);
                }
                // fade out the visible child and reset its z-index value
                slider.children.filter(':visible').fadeout(slider.settings.speed).css({ zindex: 0 });
                // fade in the newly requested slide
                slider.children.eq(slider.active.index).css('zindex', slider.settings.slidezindex + 1).fadein(slider.settings.speed, function () {
                    $(this).css('zindex', slider.settings.slidezindex);
                    updateafterslidetransition();
                });
                // slider mode is not "fade"
            } else {
                // if adaptiveheight is true and next height is different from current height, animate to the new height
                if (slider.settings.adaptiveheight && slider.viewport.height() !== getviewportheight()) {
                    slider.viewport.animate({ height: getviewportheight() }, slider.settings.adaptiveheightspeed);
                }
                // if carousel and not infinite loop
                if (!slider.settings.infiniteloop && slider.carousel && slider.active.last) {
                    if (slider.settings.mode === 'horizontal') {
                        // get the last child position
                        lastchild = slider.children.eq(slider.children.length - 1);
                        position = lastchild.position();
                        // calculate the position of the last slide
                        moveby = slider.viewport.width() - lastchild.outerwidth();
                    } else {
                        // get last showing index position
                        lastshowingindex = slider.children.length - slider.settings.minslides;
                        position = slider.children.eq(lastshowingindex).position();
                    }
                    // horizontal carousel, going previous while on first slide (infiniteloop mode)
                } else if (slider.carousel && slider.active.last && direction === 'prev') {
                    // get the last child position
                    eq = slider.settings.moveslides === 1 ? slider.settings.maxslides - getmoveby() : ((getpagerqty() - 1) * getmoveby()) - (slider.children.length - slider.settings.maxslides);
                    lastchild = el.children('.bx-clone').eq(eq);
                    position = lastchild.position();
                    // if infinite loop and "next" is clicked on the last slide
                } else if (direction === 'next' && slider.active.index === 0) {
                    // get the last clone position
                    position = el.find('> .bx-clone').eq(slider.settings.maxslides).position();
                    slider.active.last = false;
                    // normal non-zero requests
                } else if (slideindex >= 0) {
                    //parseint is applied to allow floats for slides/page
                    requestel = slideindex * parseint(getmoveby());
                    position = slider.children.eq(requestel).position();
                }

                /* if the position doesn't exist
                 * (e.g. if you destroy the slider on a next click),
                 * it doesn't throw an error.
                 */
                if (typeof (position) !== 'undefined') {
                    value = slider.settings.mode === 'horizontal' ? -(position.left - moveby) : -position.top;
                    // plugin values to be animated
                    setpositionproperty(value, 'slide', slider.settings.speed);
                } else {
                    slider.working = false;
                }
            }
            if (slider.settings.ariahidden) { applyariahiddenattributes(slider.active.index * getmoveby()); }
        };

        /**
         * transitions to the next slide in the show
         */
        el.gotonextslide = function () {
            // if infiniteloop is false and last page is showing, disregard call
            if (!slider.settings.infiniteloop && slider.active.last) { return; }
            var pagerindex = parseint(slider.active.index) + 1;
            el.gotoslide(pagerindex, 'next');
        };

        /**
         * transitions to the prev slide in the show
         */
        el.gotoprevslide = function () {
            // if infiniteloop is false and last page is showing, disregard call
            if (!slider.settings.infiniteloop && slider.active.index === 0) { return; }
            var pagerindex = parseint(slider.active.index) - 1;
            el.gotoslide(pagerindex, 'prev');
        };

        /**
         * starts the auto show
         *
         * @param preventcontrolupdate (boolean)
         *  - if true, auto controls state will not be updated
         */
        el.startauto = function (preventcontrolupdate) {
            // if an interval already exists, disregard call
            if (slider.interval) { return; }
            // create an interval
            slider.interval = setinterval(function () {
                if (slider.settings.autodirection === 'next') {
                    el.gotonextslide();
                } else {
                    el.gotoprevslide();
                }
            }, slider.settings.pause);
            // if auto controls are displayed and preventcontrolupdate is not true
            if (slider.settings.autocontrols && preventcontrolupdate !== true) { updateautocontrols('stop'); }
        };

        /**
         * stops the auto show
         *
         * @param preventcontrolupdate (boolean)
         *  - if true, auto controls state will not be updated
         */
        el.stopauto = function (preventcontrolupdate) {
            // if no interval exists, disregard call
            if (!slider.interval) { return; }
            // clear the interval
            clearinterval(slider.interval);
            slider.interval = null;
            // if auto controls are displayed and preventcontrolupdate is not true
            if (slider.settings.autocontrols && preventcontrolupdate !== true) { updateautocontrols('start'); }
        };

        /**
         * returns current slide index (zero-based)
         */
        el.getcurrentslide = function () {
            return slider.active.index;
        };

        /**
         * returns current slide element
         */
        el.getcurrentslideelement = function () {
            return slider.children.eq(slider.active.index);
        };

        /**
         * returns a slide element
         * @param index (int)
         *  - the index (zero-based) of the element you want returned.
         */
        el.getslideelement = function (index) {
            return slider.children.eq(index);
        };

        /**
         * returns number of slides in show
         */
        el.getslidecount = function () {
            return slider.children.length;
        };

        /**
         * return slider.working variable
         */
        el.isworking = function () {
            return slider.working;
        };

        /**
         * update all dynamic slider elements
         */
        el.redrawslider = function () {
            // resize all children in ratio to new screen size
            slider.children.add(el.find('.bx-clone')).outerwidth(getslidewidth());
            // adjust the height
            slider.viewport.css('height', getviewportheight());
            // update the slide position
            if (!slider.settings.ticker) { setslideposition(); }
            // if active.last was true before the screen resize, we want
            // to keep it last no matter what screen size we end on
            if (slider.active.last) { slider.active.index = getpagerqty() - 1; }
            // if the active index (page) no longer exists due to the resize, simply set the index as last
            if (slider.active.index >= getpagerqty()) { slider.active.last = true; }
            // if a pager is being displayed and a custom pager is not being used, update it
            if (slider.settings.pager && !slider.settings.pagercustom) {
                populatepager();
                updatepageractive(slider.active.index);
            }
            if (slider.settings.ariahidden) { applyariahiddenattributes(slider.active.index * getmoveby()); }
        };

        /**
         * destroy the current instance of the slider (revert everything back to original state)
         */
        el.destroyslider = function () {
            // don't do anything if slider has already been destroyed
            if (!slider.initialized) { return; }
            slider.initialized = false;
            $('.bx-clone', this).remove();
            slider.children.each(function () {
                if ($(this).data('origstyle') !== undefined) {
                    $(this).attr('style', $(this).data('origstyle'));
                } else {
                    $(this).removeattr('style');
                }
            });
            if ($(this).data('origstyle') !== undefined) {
                this.attr('style', $(this).data('origstyle'));
            } else {
                $(this).removeattr('style');
            }
            $(this).unwrap().unwrap();
            if (slider.controls.el) { slider.controls.el.remove(); }
            if (slider.controls.next) { slider.controls.next.remove(); }
            if (slider.controls.prev) { slider.controls.prev.remove(); }
            if (slider.pagerel && slider.settings.controls && !slider.settings.pagercustom) { slider.pagerel.remove(); }
            $('.bx-caption', this).remove();
            if (slider.controls.autoel) { slider.controls.autoel.remove(); }
            clearinterval(slider.interval);
            if (slider.settings.responsive) { $(window).unbind('resize', resizewindow); }
            if (slider.settings.keyboardenabled) { $(document).unbind('keydown', keypress); }
            //remove self reference in data
            $(this).removedata('bxslider');
        };

        /**
         * reload the slider (revert all dom changes, and re-initialize)
         */
        el.reloadslider = function (settings) {
            if (settings !== undefined) { options = settings; }
            el.destroyslider();
            init();
            //store reference to self in order to access public functions later
            $(el).data('bxslider', this);
        };

        init();

        $(el).data('bxslider', this);

        // returns the current jquery object
        return this;
    };

})(jquery);