var swiper = function (selector, params) {
    'use strict';

    /*=========================
      a little bit dirty but required part for ie8 and old ff support
      ===========================*/
    if (!document.body.outerhtml && document.body.__definegetter__) {
        if (htmlelement) {
            var element = htmlelement.prototype;
            if (element.__definegetter__) {
                element.__definegetter__('outerhtml', function () { return new xmlserializer().serializetostring(this); });
            }
        }
    }

    if (!window.getcomputedstyle) {
        window.getcomputedstyle = function (el, pseudo) {
            this.el = el;
            this.getpropertyvalue = function (prop) {
                var re = /(\-([a-z]){1})/g;
                if (prop === 'float') prop = 'stylefloat';
                if (re.test(prop)) {
                    prop = prop.replace(re, function () {
                        return arguments[2].touppercase();
                    });
                }
                return el.currentstyle[prop] ? el.currentstyle[prop] : null;
            };
            return this;
        };
    }
    if (!array.prototype.indexof) {
        array.prototype.indexof = function (obj, start) {
            for (var i = (start || 0), j = this.length; i < j; i++) {
                if (this[i] === obj) { return i; }
            }
            return -1;
        };
    }
    if (!document.queryselectorall) {
        if (!window.jquery) return;
    }
    function $$(selector, context) {
        if (document.queryselectorall)
            return (context || document).queryselectorall(selector);
        else
            return jquery(selector, context);
    }

    /*=========================
      check for correct selector
      ===========================*/
    if (typeof selector === 'undefined') return;

    if (!(selector.nodetype)) {
        if ($$(selector).length === 0) return;
    }

     /*=========================
      _this
      ===========================*/
    var _this = this;

     /*=========================
      default flags and vars
      ===========================*/
    _this.touches = {
        start: 0,
        startx: 0,
        starty: 0,
        current: 0,
        currentx: 0,
        currenty: 0,
        diff: 0,
        abs: 0
    };
    _this.positions = {
        start: 0,
        abs: 0,
        diff: 0,
        current: 0
    };
    _this.times = {
        start: 0,
        end: 0
    };

    _this.id = (new date()).gettime();
    _this.container = (selector.nodetype) ? selector : $$(selector)[0];
    _this.istouched = false;
    _this.ismoved = false;
    _this.activeindex = 0;
    _this.centerindex = 0;
    _this.activeloaderindex = 0;
    _this.activeloopindex = 0;
    _this.previousindex = null;
    _this.velocity = 0;
    _this.snapgrid = [];
    _this.slidesgrid = [];
    _this.imagestoload = [];
    _this.imagesloaded = 0;
    _this.wrapperleft = 0;
    _this.wrapperright = 0;
    _this.wrappertop = 0;
    _this.wrapperbottom = 0;
    _this.isandroid = navigator.useragent.tolowercase().indexof('android') >= 0;
    var wrapper, slidesize, wrappersize, direction, isscrolling, containersize;

    /*=========================
      default parameters
      ===========================*/
    var defaults = {
        eventtarget: 'wrapper', // or 'container'
        mode : 'horizontal', // or 'vertical'
        touchratio : 1,
        speed : 300,
        freemode : false,
        freemodefluid : false,
        momentumratio: 1,
        momentumbounce: true,
        momentumbounceratio: 1,
        slidesperview : 1,
        slidespergroup : 1,
        slidesperviewfit: true, //fit to slide when spv "auto" and slides larger than container
        simulatetouch : true,
        followfinger : true,
        shortswipes : true,
        longswipesratio: 0.5,
        movestartthreshold: false,
        onlyexternal : false,
        createpagination : true,
        pagination : false,
        paginationelement: 'span',
        paginationclickable: false,
        paginationasrange: true,
        resistance : true, // or false or 100%
        scrollcontainer : false,
        preventlinks : true,
        preventlinkspropagation: false,
        noswiping : false, // or class
        noswipingclass : 'swiper-no-swiping', //:)
        initialslide: 0,
        keyboardcontrol: false,
        mousewheelcontrol : false,
        mousewheelcontrolforcetoaxis : false,
        usecss3transforms : true,
        // autoplay
        autoplay: false,
        autoplaydisableoninteraction: true,
        autoplaystoponlast: false,
        //loop mode
        loop: false,
        loopadditionalslides: 0,
        // round length values
        roundlengths: false,
        //auto height
        calculateheight: false,
        //apply css for width and/or height
        csswidthandheight: false, // or true or 'width' or 'height'
        //images preloader
        updateonimagesready : true,
        //form elements
        releaseformelements : true,
        //watch for active slide, useful when use effects on different slide states
        watchactiveindex: false,
        //slides visibility fit
        visibilityfullfit : false,
        //slides offset
        offsetpxbefore : 0,
        offsetpxafter : 0,
        offsetslidesbefore : 0,
        offsetslidesafter : 0,
        centeredslides: false,
        //queue callbacks
        queuestartcallbacks : false,
        queueendcallbacks : false,
        //auto resize
        autoresize : true,
        resizereinit : false,
        //domanimation
        domanimation : true,
        //slides loader
        loader: {
            slides: [], //array with slides
            slideshtmltype: 'inner', // or 'outer'
            surroundgroups: 1, //keep preloaded slides groups around view
            logic: 'reload', //or 'change'
            loadallslides: false
        },
        // one way swipes
        swipetoprev: true,
        swipetonext: true,
        //namespace
        slideelement: 'div',
        slideclass: 'swiper-slide',
        slideactiveclass: 'swiper-slide-active',
        slidevisibleclass: 'swiper-slide-visible',
        slideduplicateclass: 'swiper-slide-duplicate',
        wrapperclass: 'swiper-wrapper',
        paginationelementclass: 'swiper-pagination-switch',
        paginationactiveclass: 'swiper-active-switch',
        paginationvisibleclass: 'swiper-visible-switch'
    };
    params = params || {};
    for (var prop in defaults) {
        if (prop in params && typeof params[prop] === 'object') {
            for (var subprop in defaults[prop]) {
                if (! (subprop in params[prop])) {
                    params[prop][subprop] = defaults[prop][subprop];
                }
            }
        }
        else if (! (prop in params)) {
            params[prop] = defaults[prop];
        }
    }
    _this.params = params;
    if (params.scrollcontainer) {
        params.freemode = true;
        params.freemodefluid = true;
    }
    if (params.loop) {
        params.resistance = '100%';
    }
    var ish = params.mode === 'horizontal';

    /*=========================
      define touch events
      ===========================*/
    var desktopevents = ['mousedown', 'mousemove', 'mouseup'];
    if (_this.browser.ie10) desktopevents = ['mspointerdown', 'mspointermove', 'mspointerup'];
    if (_this.browser.ie11) desktopevents = ['pointerdown', 'pointermove', 'pointerup'];

    _this.touchevents = {
        touchstart : _this.support.touch || !params.simulatetouch  ? 'touchstart' : desktopevents[0],
        touchmove : _this.support.touch || !params.simulatetouch ? 'touchmove' : desktopevents[1],
        touchend : _this.support.touch || !params.simulatetouch ? 'touchend' : desktopevents[2]
    };

    /*=========================
      wrapper
      ===========================*/
    for (var i = _this.container.childnodes.length - 1; i >= 0; i--) {
        if (_this.container.childnodes[i].classname) {
            var _wrapperclasses = _this.container.childnodes[i].classname.split(/\s+/);
            for (var j = 0; j < _wrapperclasses.length; j++) {
                if (_wrapperclasses[j] === params.wrapperclass) {
                    wrapper = _this.container.childnodes[i];
                }
            }
        }
    }

    _this.wrapper = wrapper;
    /*=========================
      slide api
      ===========================*/
    _this._extendswiperslide = function  (el) {
        el.append = function () {
            if (params.loop) {
                el.insertafter(_this.slides.length - _this.loopedslides);
            }
            else {
                _this.wrapper.appendchild(el);
                _this.reinit();
            }

            return el;
        };
        el.prepend = function () {
            if (params.loop) {
                _this.wrapper.insertbefore(el, _this.slides[_this.loopedslides]);
                _this.removeloopedslides();
                _this.calcslides();
                _this.createloop();
            }
            else {
                _this.wrapper.insertbefore(el, _this.wrapper.firstchild);
            }
            _this.reinit();
            return el;
        };
        el.insertafter = function (index) {
            if (typeof index === 'undefined') return false;
            var beforeslide;

            if (params.loop) {
                beforeslide = _this.slides[index + 1 + _this.loopedslides];
                if (beforeslide) {
                    _this.wrapper.insertbefore(el, beforeslide);
                }
                else {
                    _this.wrapper.appendchild(el);
                }
                _this.removeloopedslides();
                _this.calcslides();
                _this.createloop();
            }
            else {
                beforeslide = _this.slides[index + 1];
                _this.wrapper.insertbefore(el, beforeslide);
            }
            _this.reinit();
            return el;
        };
        el.clone = function () {
            return _this._extendswiperslide(el.clonenode(true));
        };
        el.remove = function () {
            _this.wrapper.removechild(el);
            _this.reinit();
        };
        el.html = function (html) {
            if (typeof html === 'undefined') {
                return el.innerhtml;
            }
            else {
                el.innerhtml = html;
                return el;
            }
        };
        el.index = function () {
            var index;
            for (var i = _this.slides.length - 1; i >= 0; i--) {
                if (el === _this.slides[i]) index = i;
            }
            return index;
        };
        el.isactive = function () {
            if (el.index() === _this.activeindex) return true;
            else return false;
        };
        if (!el.swiperslidedatastorage) el.swiperslidedatastorage = {};
        el.getdata = function (name) {
            return el.swiperslidedatastorage[name];
        };
        el.setdata = function (name, value) {
            el.swiperslidedatastorage[name] = value;
            return el;
        };
        el.data = function (name, value) {
            if (typeof value === 'undefined') {
                return el.getattribute('data-' + name);
            }
            else {
                el.setattribute('data-' + name, value);
                return el;
            }
        };
        el.getwidth = function (outer, round) {
            return _this.h.getwidth(el, outer, round);
        };
        el.getheight = function (outer, round) {
            return _this.h.getheight(el, outer, round);
        };
        el.getoffset = function () {
            return _this.h.getoffset(el);
        };
        return el;
    };

    //calculate information about number of slides
    _this.calcslides = function (forcecalcslides) {
        var oldnumber = _this.slides ? _this.slides.length : false;
        _this.slides = [];
        _this.displayslides = [];
        for (var i = 0; i < _this.wrapper.childnodes.length; i++) {
            if (_this.wrapper.childnodes[i].classname) {
                var _classname = _this.wrapper.childnodes[i].classname;
                var _slideclasses = _classname.split(/\s+/);
                for (var j = 0; j < _slideclasses.length; j++) {
                    if (_slideclasses[j] === params.slideclass) {
                        _this.slides.push(_this.wrapper.childnodes[i]);
                    }
                }
            }
        }
        for (i = _this.slides.length - 1; i >= 0; i--) {
            _this._extendswiperslide(_this.slides[i]);
        }
        if (oldnumber === false) return;
        if (oldnumber !== _this.slides.length || forcecalcslides) {

            // number of slides has been changed
            removeslideevents();
            addslideevents();
            _this.updateactiveslide();
            if (_this.params.pagination) _this.createpagination();
            _this.callplugins('numberofslideschanged');
        }
    };

    //create slide
    _this.createslide = function (html, slideclasslist, el) {
        slideclasslist = slideclasslist || _this.params.slideclass;
        el = el || params.slideelement;
        var newslide = document.createelement(el);
        newslide.innerhtml = html || '';
        newslide.classname = slideclasslist;
        return _this._extendswiperslide(newslide);
    };

    //append slide
    _this.appendslide = function (html, slideclasslist, el) {
        if (!html) return;
        if (html.nodetype) {
            return _this._extendswiperslide(html).append();
        }
        else {
            return _this.createslide(html, slideclasslist, el).append();
        }
    };
    _this.prependslide = function (html, slideclasslist, el) {
        if (!html) return;
        if (html.nodetype) {
            return _this._extendswiperslide(html).prepend();
        }
        else {
            return _this.createslide(html, slideclasslist, el).prepend();
        }
    };
    _this.insertslideafter = function (index, html, slideclasslist, el) {
        if (typeof index === 'undefined') return false;
        if (html.nodetype) {
            return _this._extendswiperslide(html).insertafter(index);
        }
        else {
            return _this.createslide(html, slideclasslist, el).insertafter(index);
        }
    };
    _this.removeslide = function (index) {
        if (_this.slides[index]) {
            if (params.loop) {
                if (!_this.slides[index + _this.loopedslides]) return false;
                _this.slides[index + _this.loopedslides].remove();
                _this.removeloopedslides();
                _this.calcslides();
                _this.createloop();
            }
            else _this.slides[index].remove();
            return true;
        }
        else return false;
    };
    _this.removelastslide = function () {
        if (_this.slides.length > 0) {
            if (params.loop) {
                _this.slides[_this.slides.length - 1 - _this.loopedslides].remove();
                _this.removeloopedslides();
                _this.calcslides();
                _this.createloop();
            }
            else _this.slides[_this.slides.length - 1].remove();
            return true;
        }
        else {
            return false;
        }
    };
    _this.removeallslides = function () {
        var num = _this.slides.length;
        for (var i = _this.slides.length - 1; i >= 0; i--) {
            _this.slides[i].remove();
            if (i === num - 1) {
                _this.setwrappertranslate(0);
            }
        }
    };
    _this.getslide = function (index) {
        return _this.slides[index];
    };
    _this.getlastslide = function () {
        return _this.slides[_this.slides.length - 1];
    };
    _this.getfirstslide = function () {
        return _this.slides[0];
    };

    //currently active slide
    _this.activeslide = function () {
        return _this.slides[_this.activeindex];
    };

    /*=========================
     wrapper for callbacks : allows additive callbacks via function arrays
     ===========================*/
    _this.firecallback = function () {
        var callback = arguments[0];
        if (object.prototype.tostring.call(callback) === '[object array]') {
            for (var i = 0; i < callback.length; i++) {
                if (typeof callback[i] === 'function') {
                    callback[i](arguments[1], arguments[2], arguments[3], arguments[4], arguments[5]);
                }
            }
        } else if (object.prototype.tostring.call(callback) === '[object string]') {
            if (params['on' + callback]) _this.firecallback(params['on' + callback], arguments[1], arguments[2], arguments[3], arguments[4], arguments[5]);
        } else {
            callback(arguments[1], arguments[2], arguments[3], arguments[4], arguments[5]);
        }
    };
    function isarray(obj) {
        if (object.prototype.tostring.apply(obj) === '[object array]') return true;
        return false;
    }

    /**
     * allows user to add callbacks, rather than replace them
     * @param callback
     * @param func
     * @return {*}
     */
    _this.addcallback = function (callback, func) {
        var _this = this, tempfunc;
        if (_this.params['on' + callback]) {
            if (isarray(this.params['on' + callback])) {
                return this.params['on' + callback].push(func);
            } else if (typeof this.params['on' + callback] === 'function') {
                tempfunc = this.params['on' + callback];
                this.params['on' + callback] = [];
                this.params['on' + callback].push(tempfunc);
                return this.params['on' + callback].push(func);
            }
        } else {
            this.params['on' + callback] = [];
            return this.params['on' + callback].push(func);
        }
    };
    _this.removecallbacks = function (callback) {
        if (_this.params['on' + callback]) {
            _this.params['on' + callback] = null;
        }
    };

    /*=========================
      plugins api
      ===========================*/
    var _plugins = [];
    for (var plugin in _this.plugins) {
        if (params[plugin]) {
            var p = _this.plugins[plugin](_this, params[plugin]);
            if (p) _plugins.push(p);
        }
    }
    _this.callplugins = function (method, args) {
        if (!args) args = {};
        for (var i = 0; i < _plugins.length; i++) {
            if (method in _plugins[i]) {
                _plugins[i][method](args);
            }
        }
    };

    /*=========================
      windows phone 8 fix
      ===========================*/
    if ((_this.browser.ie10 || _this.browser.ie11) && !params.onlyexternal) {
        _this.wrapper.classlist.add('swiper-wp8-' + (ish ? 'horizontal' : 'vertical'));
    }

    /*=========================
      free mode class
      ===========================*/
    if (params.freemode) {
        _this.container.classname += ' swiper-free-mode';
    }

    /*==================================================
        init/re-init/resize fix
    ====================================================*/
    _this.initialized = false;
    _this.init = function (force, forcecalcslides) {
        var _width = _this.h.getwidth(_this.container, false, params.roundlengths);
        var _height = _this.h.getheight(_this.container, false, params.roundlengths);
        if (_width === _this.width && _height === _this.height && !force) return;

        _this.width = _width;
        _this.height = _height;

        var slidewidth, slideheight, slidemaxheight, wrapperwidth, wrapperheight, slideleft;
        var i; // loop index variable to avoid jshint w004 / w038
        containersize = ish ? _width : _height;
        var wrapper = _this.wrapper;

        if (force) {
            _this.calcslides(forcecalcslides);
        }

        if (params.slidesperview === 'auto') {
            //auto mode
            var slideswidth = 0;
            var slidesheight = 0;

            //unset styles
            if (params.slidesoffset > 0) {
                wrapper.style.paddingleft = '';
                wrapper.style.paddingright = '';
                wrapper.style.paddingtop = '';
                wrapper.style.paddingbottom = '';
            }
            wrapper.style.width = '';
            wrapper.style.height = '';
            if (params.offsetpxbefore > 0) {
                if (ish) _this.wrapperleft = params.offsetpxbefore;
                else _this.wrappertop = params.offsetpxbefore;
            }
            if (params.offsetpxafter > 0) {
                if (ish) _this.wrapperright = params.offsetpxafter;
                else _this.wrapperbottom = params.offsetpxafter;
            }

            if (params.centeredslides) {
                if (ish) {
                    _this.wrapperleft = (containersize - this.slides[0].getwidth(true, params.roundlengths)) / 2;
                    _this.wrapperright = (containersize - _this.slides[_this.slides.length - 1].getwidth(true, params.roundlengths)) / 2;
                }
                else {
                    _this.wrappertop = (containersize - _this.slides[0].getheight(true, params.roundlengths)) / 2;
                    _this.wrapperbottom = (containersize - _this.slides[_this.slides.length - 1].getheight(true, params.roundlengths)) / 2;
                }
            }

            if (ish) {
                if (_this.wrapperleft >= 0) wrapper.style.paddingleft = _this.wrapperleft + 'px';
                if (_this.wrapperright >= 0) wrapper.style.paddingright = _this.wrapperright + 'px';
            }
            else {
                if (_this.wrappertop >= 0) wrapper.style.paddingtop = _this.wrappertop + 'px';
                if (_this.wrapperbottom >= 0) wrapper.style.paddingbottom = _this.wrapperbottom + 'px';
            }
            slideleft = 0;
            var centeredslideleft = 0;
            _this.snapgrid = [];
            _this.slidesgrid = [];

            slidemaxheight = 0;
            for (i = 0; i < _this.slides.length; i++) {
                slidewidth = _this.slides[i].getwidth(true, params.roundlengths);
                slideheight = _this.slides[i].getheight(true, params.roundlengths);
                if (params.calculateheight) {
                    slidemaxheight = math.max(slidemaxheight, slideheight);
                }
                var _slidesize = ish ? slidewidth : slideheight;
                if (params.centeredslides) {
                    var nextslidewidth = i === _this.slides.length - 1 ? 0 : _this.slides[i + 1].getwidth(true, params.roundlengths);
                    var nextslideheight = i === _this.slides.length - 1 ? 0 : _this.slides[i + 1].getheight(true, params.roundlengths);
                    var nextslidesize = ish ? nextslidewidth : nextslideheight;
                    if (_slidesize > containersize) {
                        if (params.slidesperviewfit) {
                            _this.snapgrid.push(slideleft + _this.wrapperleft);
                            _this.snapgrid.push(slideleft + _slidesize - containersize + _this.wrapperleft);
                        }
                        else {
                            for (var j = 0; j <= math.floor(_slidesize / (containersize + _this.wrapperleft)); j++) {
                                if (j === 0) _this.snapgrid.push(slideleft + _this.wrapperleft);
                                else _this.snapgrid.push(slideleft + _this.wrapperleft + containersize * j);
                            }
                        }
                        _this.slidesgrid.push(slideleft + _this.wrapperleft);
                    }
                    else {
                        _this.snapgrid.push(centeredslideleft);
                        _this.slidesgrid.push(centeredslideleft);
                    }
                    centeredslideleft += _slidesize / 2 + nextslidesize / 2;
                }
                else {
                    if (_slidesize > containersize) {
                        if (params.slidesperviewfit) {
                            _this.snapgrid.push(slideleft);
                            _this.snapgrid.push(slideleft + _slidesize - containersize);
                        }
                        else {
                            if (containersize !== 0) {
                                for (var k = 0; k <= math.floor(_slidesize / containersize); k++) {
                                    _this.snapgrid.push(slideleft + containersize * k);
                                }
                            }
                            else {
                                _this.snapgrid.push(slideleft);
                            }
                        }

                    }
                    else {
                        _this.snapgrid.push(slideleft);
                    }
                    _this.slidesgrid.push(slideleft);
                }

                slideleft += _slidesize;

                slideswidth += slidewidth;
                slidesheight += slideheight;
            }
            if (params.calculateheight) _this.height = slidemaxheight;
            if (ish) {
                wrappersize = slideswidth + _this.wrapperright + _this.wrapperleft;
                if(!params.csswidthandheight || params.csswidthandheight === 'height') {
                    wrapper.style.width = (slideswidth) + 'px';
                }
                if(!params.csswidthandheight || params.csswidthandheight === 'width') {
                    wrapper.style.height = (_this.height) + 'px';
                }
            }
            else {
                if(!params.csswidthandheight || params.csswidthandheight === 'height') {
                    wrapper.style.width = (_this.width) + 'px';
                }
                if(!params.csswidthandheight || params.csswidthandheight === 'width') {
                    wrapper.style.height = (slidesheight) + 'px';
                }
                wrappersize = slidesheight + _this.wrappertop + _this.wrapperbottom;
            }

        }
        else if (params.scrollcontainer) {
            //scroll container
            wrapper.style.width = '';
            wrapper.style.height = '';
            wrapperwidth = _this.slides[0].getwidth(true, params.roundlengths);
            wrapperheight = _this.slides[0].getheight(true, params.roundlengths);
            wrappersize = ish ? wrapperwidth : wrapperheight;
            wrapper.style.width = wrapperwidth + 'px';
            wrapper.style.height = wrapperheight + 'px';
            slidesize = ish ? wrapperwidth : wrapperheight;

        }
        else {
            //for usual slides
            if (params.calculateheight) {
                slidemaxheight = 0;
                wrapperheight = 0;
                //resetwrappersize
                if (!ish) _this.container.style.height = '';
                wrapper.style.height = '';

                for (i = 0; i < _this.slides.length; i++) {
                    //resetslidesize
                    _this.slides[i].style.height = '';
                    slidemaxheight = math.max(_this.slides[i].getheight(true), slidemaxheight);
                    if (!ish) wrapperheight += _this.slides[i].getheight(true);
                }
                slideheight = slidemaxheight;
                _this.height = slideheight;

                if (ish) wrapperheight = slideheight;
                else {
                    containersize = slideheight;
                    _this.container.style.height = containersize + 'px';
                }
            }
            else {
                slideheight = ish ? _this.height : _this.height / params.slidesperview;
                if (params.roundlengths) slideheight = math.ceil(slideheight);
                wrapperheight = ish ? _this.height : _this.slides.length * slideheight;
            }
            slidewidth = ish ? _this.width / params.slidesperview : _this.width;
            if (params.roundlengths) slidewidth = math.ceil(slidewidth);
            wrapperwidth = ish ? _this.slides.length * slidewidth : _this.width;
            slidesize = ish ? slidewidth : slideheight;

            if (params.offsetslidesbefore > 0) {
                if (ish) _this.wrapperleft = slidesize * params.offsetslidesbefore;
                else _this.wrappertop = slidesize * params.offsetslidesbefore;
            }
            if (params.offsetslidesafter > 0) {
                if (ish) _this.wrapperright = slidesize * params.offsetslidesafter;
                else _this.wrapperbottom = slidesize * params.offsetslidesafter;
            }
            if (params.offsetpxbefore > 0) {
                if (ish) _this.wrapperleft = params.offsetpxbefore;
                else _this.wrappertop = params.offsetpxbefore;
            }
            if (params.offsetpxafter > 0) {
                if (ish) _this.wrapperright = params.offsetpxafter;
                else _this.wrapperbottom = params.offsetpxafter;
            }
            if (params.centeredslides) {
                if (ish) {
                    _this.wrapperleft = (containersize - slidesize) / 2;
                    _this.wrapperright = (containersize - slidesize) / 2;
                }
                else {
                    _this.wrappertop = (containersize - slidesize) / 2;
                    _this.wrapperbottom = (containersize - slidesize) / 2;
                }
            }
            if (ish) {
                if (_this.wrapperleft > 0) wrapper.style.paddingleft = _this.wrapperleft + 'px';
                if (_this.wrapperright > 0) wrapper.style.paddingright = _this.wrapperright + 'px';
            }
            else {
                if (_this.wrappertop > 0) wrapper.style.paddingtop = _this.wrappertop + 'px';
                if (_this.wrapperbottom > 0) wrapper.style.paddingbottom = _this.wrapperbottom + 'px';
            }

            wrappersize = ish ? wrapperwidth + _this.wrapperright + _this.wrapperleft : wrapperheight + _this.wrappertop + _this.wrapperbottom;
            if (parsefloat(wrapperwidth) > 0 && (!params.csswidthandheight || params.csswidthandheight === 'height')) {
                wrapper.style.width = wrapperwidth + 'px';
            }
            if (parsefloat(wrapperheight) > 0 && (!params.csswidthandheight || params.csswidthandheight === 'width')) {
                wrapper.style.height = wrapperheight + 'px';
            }
            slideleft = 0;
            _this.snapgrid = [];
            _this.slidesgrid = [];
            for (i = 0; i < _this.slides.length; i++) {
                _this.snapgrid.push(slideleft);
                _this.slidesgrid.push(slideleft);
                slideleft += slidesize;
                if (parsefloat(slidewidth) > 0 && (!params.csswidthandheight || params.csswidthandheight === 'height')) {
                    _this.slides[i].style.width = slidewidth + 'px';
                }
                if (parsefloat(slideheight) > 0 && (!params.csswidthandheight || params.csswidthandheight === 'width')) {
                    _this.slides[i].style.height = slideheight + 'px';
                }
            }

        }

        if (!_this.initialized) {
            _this.callplugins('onfirstinit');
            if (params.onfirstinit) _this.firecallback(params.onfirstinit, _this);
        }
        else {
            _this.callplugins('oninit');
            if (params.oninit) _this.firecallback(params.oninit, _this);
        }
        _this.initialized = true;
    };

    _this.reinit = function (forcecalcslides) {
        _this.init(true, forcecalcslides);
    };

    _this.resizefix = function (reinit) {
        _this.callplugins('beforeresizefix');

        _this.init(params.resizereinit || reinit);

        // swipe to active slide in fixed mode
        if (!params.freemode) {
            _this.swipeto((params.loop ? _this.activeloopindex : _this.activeindex), 0, false);
            // fix autoplay
            if (params.autoplay) {
                if (_this.support.transitions && typeof autoplaytimeoutid !== 'undefined') {
                    if (typeof autoplaytimeoutid !== 'undefined') {
                        cleartimeout(autoplaytimeoutid);
                        autoplaytimeoutid = undefined;
                        _this.startautoplay();
                    }
                }
                else {
                    if (typeof autoplayintervalid !== 'undefined') {
                        clearinterval(autoplayintervalid);
                        autoplayintervalid = undefined;
                        _this.startautoplay();
                    }
                }
            }
        }
        // move wrapper to the beginning in free mode
        else if (_this.getwrappertranslate() < -maxwrapperposition()) {
            _this.setwrappertransition(0);
            _this.setwrappertranslate(-maxwrapperposition());
        }

        _this.callplugins('afterresizefix');
    };

    /*==========================================
        max and min positions
    ============================================*/
    function maxwrapperposition() {
        var a = (wrappersize - containersize);
        if (params.freemode) {
            a = wrappersize - containersize;
        }
        // if (params.loop) a -= containersize;
        if (params.slidesperview > _this.slides.length && !params.centeredslides) {
            a = 0;
        }
        if (a < 0) a = 0;
        return a;
    }

    /*==========================================
        event listeners
    ============================================*/
    function initevents() {
        var bind = _this.h.addeventlistener;
        var eventtarget = params.eventtarget === 'wrapper' ? _this.wrapper : _this.container;
        //touch events
        if (! (_this.browser.ie10 || _this.browser.ie11)) {
            if (_this.support.touch) {
                bind(eventtarget, 'touchstart', ontouchstart);
                bind(eventtarget, 'touchmove', ontouchmove);
                bind(eventtarget, 'touchend', ontouchend);
            }
            if (params.simulatetouch) {
                bind(eventtarget, 'mousedown', ontouchstart);
                bind(document, 'mousemove', ontouchmove);
                bind(document, 'mouseup', ontouchend);
            }
        }
        else {
            bind(eventtarget, _this.touchevents.touchstart, ontouchstart);
            bind(document, _this.touchevents.touchmove, ontouchmove);
            bind(document, _this.touchevents.touchend, ontouchend);
        }

        //resize event
        if (params.autoresize) {
            bind(window, 'resize', _this.resizefix);
        }
        //slide events
        addslideevents();
        //mousewheel
        _this._wheelevent = false;
        if (params.mousewheelcontrol) {
            if (document.onmousewheel !== undefined) {
                _this._wheelevent = 'mousewheel';
            }
            if (!_this._wheelevent) {
                try {
                    new wheelevent('wheel');
                    _this._wheelevent = 'wheel';
                } catch (e) {}
            }
            if (!_this._wheelevent) {
                _this._wheelevent = 'dommousescroll';
            }
            if (_this._wheelevent) {
                bind(_this.container, _this._wheelevent, handlemousewheel);
            }
        }

        //keyboard
		function _loadimage(img) {
			var image, src;
			var onready = function () {
				if (typeof _this === 'undefined' || _this === null) return;
				if (_this.imagesloaded !== undefined) _this.imagesloaded++;
				if (_this.imagesloaded === _this.imagestoload.length) {
					_this.reinit();
					if (params.onimagesready) _this.firecallback(params.onimagesready, _this);
				}
			};

			if(!img.complete){
				src = (img.currentsrc || img.getattribute('src'))
				if( src ){
					image = new image();
					image.onload = onready;
					image.onerror = onready;
					image.src = src;
				} else {
					onready();
				}

			} else {//image already loaded...
				onready();
			}
		}

		if (params.keyboardcontrol) {
			bind(document, 'keydown', handlekeyboardkeys);
		}
		if (params.updateonimagesready) {
			_this.imagestoload = $$('img', _this.container);

			for (var i = 0; i < _this.imagestoload.length; i++) {
				_loadimage(_this.imagestoload[i]);
			}
		}
    }

    //remove event listeners
    _this.destroy = function (removestyles) {
        var unbind = _this.h.removeeventlistener;
        var eventtarget = params.eventtarget === 'wrapper' ? _this.wrapper : _this.container;
        //touch events
        if (! (_this.browser.ie10 || _this.browser.ie11)) {
            if (_this.support.touch) {
                unbind(eventtarget, 'touchstart', ontouchstart);
                unbind(eventtarget, 'touchmove', ontouchmove);
                unbind(eventtarget, 'touchend', ontouchend);
            }
            if (params.simulatetouch) {
                unbind(eventtarget, 'mousedown', ontouchstart);
                unbind(document, 'mousemove', ontouchmove);
                unbind(document, 'mouseup', ontouchend);
            }
        }
        else {
            unbind(eventtarget, _this.touchevents.touchstart, ontouchstart);
            unbind(document, _this.touchevents.touchmove, ontouchmove);
            unbind(document, _this.touchevents.touchend, ontouchend);
        }

        //resize event
        if (params.autoresize) {
            unbind(window, 'resize', _this.resizefix);
        }

        //init slide events
        removeslideevents();

        //pagination
        if (params.paginationclickable) {
            removepaginationevents();
        }

        //mousewheel
        if (params.mousewheelcontrol && _this._wheelevent) {
            unbind(_this.container, _this._wheelevent, handlemousewheel);
        }

        //keyboard
        if (params.keyboardcontrol) {
            unbind(document, 'keydown', handlekeyboardkeys);
        }

        //stop autoplay
        if (params.autoplay) {
            _this.stopautoplay();
        }
        // remove styles
        if (removestyles) {
            _this.wrapper.removeattribute('style');
            for (var i = 0; i < _this.slides.length; i++) {
                _this.slides[i].removeattribute('style');
            }
        }
        // plugins
        _this.callplugins('ondestroy');

        // check jquery/zepto data
        if (window.jquery && window.jquery(_this.container).data('swiper')) {
            window.jquery(_this.container).removedata('swiper');
        }
        if (window.zepto && window.zepto(_this.container).data('swiper')) {
            window.zepto(_this.container).removedata('swiper');
        }

        //destroy variable
        _this = null;
    };

    function addslideevents() {
        var bind = _this.h.addeventlistener,
            i;

        //prevent links events
        if (params.preventlinks) {
            var links = $$('a', _this.container);
            for (i = 0; i < links.length; i++) {
                bind(links[i], 'click', preventclick);
            }
        }
        //release form elements
        if (params.releaseformelements) {
            var formelements = $$('input, textarea, select', _this.container);
            for (i = 0; i < formelements.length; i++) {
                bind(formelements[i], _this.touchevents.touchstart, releaseforms, true);
                if (_this.support.touch && params.simulatetouch) {
                    bind(formelements[i], 'mousedown', releaseforms, true);
                }
            }
        }

        //slide clicks & touches
        if (params.onslideclick) {
            for (i = 0; i < _this.slides.length; i++) {
                bind(_this.slides[i], 'click', slideclick);
            }
        }
        if (params.onslidetouch) {
            for (i = 0; i < _this.slides.length; i++) {
                bind(_this.slides[i], _this.touchevents.touchstart, slidetouch);
            }
        }
    }
    function removeslideevents() {
        var unbind = _this.h.removeeventlistener,
            i;

        //slide clicks & touches
        if (params.onslideclick) {
            for (i = 0; i < _this.slides.length; i++) {
                unbind(_this.slides[i], 'click', slideclick);
            }
        }
        if (params.onslidetouch) {
            for (i = 0; i < _this.slides.length; i++) {
                unbind(_this.slides[i], _this.touchevents.touchstart, slidetouch);
            }
        }
        //release form elements
        if (params.releaseformelements) {
            var formelements = $$('input, textarea, select', _this.container);
            for (i = 0; i < formelements.length; i++) {
                unbind(formelements[i], _this.touchevents.touchstart, releaseforms, true);
                if (_this.support.touch && params.simulatetouch) {
                    unbind(formelements[i], 'mousedown', releaseforms, true);
                }
            }
        }
        //prevent links events
        if (params.preventlinks) {
            var links = $$('a', _this.container);
            for (i = 0; i < links.length; i++) {
                unbind(links[i], 'click', preventclick);
            }
        }
    }
    /*==========================================
        keyboard control
    ============================================*/
    function handlekeyboardkeys(e) {
        var kc = e.keycode || e.charcode;
        if (e.shiftkey || e.altkey || e.ctrlkey || e.metakey) return;
        if (kc === 37 || kc === 39 || kc === 38 || kc === 40) {
            var inview = false;
            //check that swiper should be inside of visible area of window
            var swiperoffset = _this.h.getoffset(_this.container);
            var scrollleft = _this.h.windowscroll().left;
            var scrolltop = _this.h.windowscroll().top;
            var windowwidth = _this.h.windowwidth();
            var windowheight = _this.h.windowheight();
            var swipercoord = [
                [swiperoffset.left, swiperoffset.top],
                [swiperoffset.left + _this.width, swiperoffset.top],
                [swiperoffset.left, swiperoffset.top + _this.height],
                [swiperoffset.left + _this.width, swiperoffset.top + _this.height]
            ];
            for (var i = 0; i < swipercoord.length; i++) {
                var point = swipercoord[i];
                if (
                    point[0] >= scrollleft && point[0] <= scrollleft + windowwidth &&
                    point[1] >= scrolltop && point[1] <= scrolltop + windowheight
                ) {
                    inview = true;
                }

            }
            if (!inview) return;
        }
        if (ish) {
            if (kc === 37 || kc === 39) {
                if (e.preventdefault) e.preventdefault();
                else e.returnvalue = false;
            }
            if (kc === 39) _this.swipenext();
            if (kc === 37) _this.swipeprev();
        }
        else {
            if (kc === 38 || kc === 40) {
                if (e.preventdefault) e.preventdefault();
                else e.returnvalue = false;
            }
            if (kc === 40) _this.swipenext();
            if (kc === 38) _this.swipeprev();
        }
    }

    _this.disablekeyboardcontrol = function () {
        params.keyboardcontrol = false;
        _this.h.removeeventlistener(document, 'keydown', handlekeyboardkeys);
    };

    _this.enablekeyboardcontrol = function () {
        params.keyboardcontrol = true;
        _this.h.addeventlistener(document, 'keydown', handlekeyboardkeys);
    };

    /*==========================================
        mousewheel control
    ============================================*/
    var lastscrolltime = (new date()).gettime();
    function handlemousewheel(e) {
        var we = _this._wheelevent;
        var delta = 0;

        //opera & ie
        if (e.detail) delta = -e.detail;
        //webkits
        else if (we === 'mousewheel') {
            if (params.mousewheelcontrolforcetoaxis) {
                if (ish) {
                    if (math.abs(e.wheeldeltax) > math.abs(e.wheeldeltay)) delta = e.wheeldeltax;
                    else return;
                }
                else {
                    if (math.abs(e.wheeldeltay) > math.abs(e.wheeldeltax)) delta = e.wheeldeltay;
                    else return;
                }
            }
            else {
                delta = e.wheeldelta;
            }
        }
        //old firefox
        else if (we === 'dommousescroll') delta = -e.detail;
        //new firefox
        else if (we === 'wheel') {
            if (params.mousewheelcontrolforcetoaxis) {
                if (ish) {
                    if (math.abs(e.deltax) > math.abs(e.deltay)) delta = -e.deltax;
                    else return;
                }
                else {
                    if (math.abs(e.deltay) > math.abs(e.deltax)) delta = -e.deltay;
                    else return;
                }
            }
            else {
                delta = math.abs(e.deltax) > math.abs(e.deltay) ? - e.deltax : - e.deltay;
            }
        }

        if (!params.freemode) {
            if ((new date()).gettime() - lastscrolltime > 60) {
                if (delta < 0) _this.swipenext();
                else _this.swipeprev();
            }
            lastscrolltime = (new date()).gettime();

        }
        else {
            //freemode or scrollcontainer:
            var position = _this.getwrappertranslate() + delta;

            if (position > 0) position = 0;
            if (position < -maxwrapperposition()) position = -maxwrapperposition();

            _this.setwrappertransition(0);
            _this.setwrappertranslate(position);
            _this.updateactiveslide(position);

            // return page scroll on edge positions
            if (position === 0 || position === -maxwrapperposition()) return;
        }
        if (params.autoplay) _this.stopautoplay(true);

        if (e.preventdefault) e.preventdefault();
        else e.returnvalue = false;
        return false;
    }
    _this.disablemousewheelcontrol = function () {
        if (!_this._wheelevent) return false;
        params.mousewheelcontrol = false;
        _this.h.removeeventlistener(_this.container, _this._wheelevent, handlemousewheel);
        return true;
    };

    _this.enablemousewheelcontrol = function () {
        if (!_this._wheelevent) return false;
        params.mousewheelcontrol = true;
        _this.h.addeventlistener(_this.container, _this._wheelevent, handlemousewheel);
        return true;
    };

    /*=========================
      grab cursor
      ===========================*/
    if (params.grabcursor) {
        var containerstyle = _this.container.style;
        containerstyle.cursor = 'move';
        containerstyle.cursor = 'grab';
        containerstyle.cursor = '-moz-grab';
        containerstyle.cursor = '-webkit-grab';
    }

    /*=========================
      slides events handlers
      ===========================*/

    _this.allowslideclick = true;
    function slideclick(event) {
        if (_this.allowslideclick) {
            setclickedslide(event);
            _this.firecallback(params.onslideclick, _this, event);
        }
    }

    function slidetouch(event) {
        setclickedslide(event);
        _this.firecallback(params.onslidetouch, _this, event);
    }

    function setclickedslide(event) {

        // ie 6-8 support
        if (!event.currenttarget) {
            var element = event.srcelement;
            do {
                if (element.classname.indexof(params.slideclass) > -1) {
                    break;
                }
                element = element.parentnode;
            } while (element);
            _this.clickedslide = element;
        }
        else {
            _this.clickedslide = event.currenttarget;
        }

        _this.clickedslideindex     = _this.slides.indexof(_this.clickedslide);
        _this.clickedslideloopindex = _this.clickedslideindex - (_this.loopedslides || 0);
    }

    _this.allowlinks = true;
    function preventclick(e) {
        if (!_this.allowlinks) {
            if (e.preventdefault) e.preventdefault();
            else e.returnvalue = false;
            if (params.preventlinkspropagation && 'stoppropagation' in e) {
                e.stoppropagation();
            }
            return false;
        }
    }
    function releaseforms(e) {
        if (e.stoppropagation) e.stoppropagation();
        else e.returnvalue = false;
        return false;

    }

    /*==================================================
        event handlers
    ====================================================*/
    var istouchevent = false;
    var allowthresholdmove;
    var allowmomentumbounce = true;
    function ontouchstart(event) {
        if (params.preventlinks) _this.allowlinks = true;
        //exit if slider is already was touched
        if (_this.istouched || params.onlyexternal) {
            return false;
        }

        // blur active elements
        var eventtarget = event.target || event.srcelement;
        if (document.activeelement && document.activeelement !== document.body) {
            if (document.activeelement !== eventtarget) document.activeelement.blur();
        }

        // form tag names
        var formtagnames = ('input select textarea').split(' ');

        // check for no swiping
        if (params.noswiping && (eventtarget) && noswipingslide(eventtarget)) return false;
        allowmomentumbounce = false;
        //check for nested swipers
        _this.istouched = true;
        istouchevent = event.type === 'touchstart';

        // prevent user enter with right and the swiper move (needs istouchevent)
        if (!istouchevent && 'which' in event && event.which === 3) {
            _this.istouched = false;
            return false;
        }

        if (!istouchevent || event.targettouches.length === 1) {
            _this.callplugins('ontouchstartbegin');
            if (!istouchevent && !_this.isandroid && formtagnames.indexof(eventtarget.tagname.tolowercase()) < 0) {

                if (event.preventdefault) event.preventdefault();
                else event.returnvalue = false;
            }

            var pagex = istouchevent ? event.targettouches[0].pagex : (event.pagex || event.clientx);
            var pagey = istouchevent ? event.targettouches[0].pagey : (event.pagey || event.clienty);

            //start touches to check the scrolling
            _this.touches.startx = _this.touches.currentx = pagex;
            _this.touches.starty = _this.touches.currenty = pagey;

            _this.touches.start = _this.touches.current = ish ? pagex : pagey;

            //set transition time to 0
            _this.setwrappertransition(0);

            //get start translate position
            _this.positions.start = _this.positions.current = _this.getwrappertranslate();

            //set transform
            _this.setwrappertranslate(_this.positions.start);

            //touchstarttime
            _this.times.start = (new date()).gettime();

            //unset scrolling
            isscrolling = undefined;

            //set treshold
            if (params.movestartthreshold > 0) {
                allowthresholdmove = false;
            }

            //callback
            if (params.ontouchstart) _this.firecallback(params.ontouchstart, _this, event);
            _this.callplugins('ontouchstartend');

        }
    }
    var velocityprevposition, velocityprevtime;
    function ontouchmove(event) {
        // if slider is not touched - exit
        if (!_this.istouched || params.onlyexternal) return;
        if (istouchevent && event.type === 'mousemove') return;

        var pagex = istouchevent ? event.targettouches[0].pagex : (event.pagex || event.clientx);
        var pagey = istouchevent ? event.targettouches[0].pagey : (event.pagey || event.clienty);

        //check for scrolling
        if (typeof isscrolling === 'undefined' && ish) {
            isscrolling = !!(isscrolling || math.abs(pagey - _this.touches.starty) > math.abs(pagex - _this.touches.startx));
        }
        if (typeof isscrolling === 'undefined' && !ish) {
            isscrolling = !!(isscrolling || math.abs(pagey - _this.touches.starty) < math.abs(pagex - _this.touches.startx));
        }
        if (isscrolling) {
            _this.istouched = false;
            return;
        }

        // one way swipes
        if (ish) {
            if ((!params.swipetonext && pagex < _this.touches.startx) || ((!params.swipetoprev && pagex > _this.touches.startx))) {
                return;
            }
        }
        else {
            if ((!params.swipetonext && pagey < _this.touches.starty) || ((!params.swipetoprev && pagey > _this.touches.starty))) {
                return;
            }
        }

        //check for nested swipers
        if (event.assignedtoswiper) {
            _this.istouched = false;
            return;
        }
        event.assignedtoswiper = true;

        //block inner links
        if (params.preventlinks) {
            _this.allowlinks = false;
        }
        if (params.onslideclick) {
            _this.allowslideclick = false;
        }

        //stop autoplay if exist
        if (params.autoplay) {
            _this.stopautoplay(true);
        }
        if (!istouchevent || event.touches.length === 1) {

            //moved flag
            if (!_this.ismoved) {
                _this.callplugins('ontouchmovestart');

                if (params.loop) {
                    _this.fixloop();
                    _this.positions.start = _this.getwrappertranslate();
                }
                if (params.ontouchmovestart) _this.firecallback(params.ontouchmovestart, _this);
            }
            _this.ismoved = true;

            // cancel event
            if (event.preventdefault) event.preventdefault();
            else event.returnvalue = false;

            _this.touches.current = ish ? pagex : pagey;

            _this.positions.current = (_this.touches.current - _this.touches.start) * params.touchratio + _this.positions.start;

            //resistance callbacks
            if (_this.positions.current > 0 && params.onresistancebefore) {
                _this.firecallback(params.onresistancebefore, _this, _this.positions.current);
            }
            if (_this.positions.current < -maxwrapperposition() && params.onresistanceafter) {
                _this.firecallback(params.onresistanceafter, _this, math.abs(_this.positions.current + maxwrapperposition()));
            }
            //resistance
            if (params.resistance && params.resistance !== '100%') {
                var resistance;
                //resistance for negative-back sliding
                if (_this.positions.current > 0) {
                    resistance = 1 - _this.positions.current / containersize / 2;
                    if (resistance < 0.5)
                        _this.positions.current = (containersize / 2);
                    else
                        _this.positions.current = _this.positions.current * resistance;
                }
                //resistance for after-end sliding
                if (_this.positions.current < -maxwrapperposition()) {

                    var diff = (_this.touches.current - _this.touches.start) * params.touchratio + (maxwrapperposition() + _this.positions.start);
                    resistance = (containersize + diff) / (containersize);
                    var newpos = _this.positions.current - diff * (1 - resistance) / 2;
                    var stoppos = -maxwrapperposition() - containersize / 2;

                    if (newpos < stoppos || resistance <= 0)
                        _this.positions.current = stoppos;
                    else
                        _this.positions.current = newpos;
                }
            }
            if (params.resistance && params.resistance === '100%') {
                //resistance for negative-back sliding
                if (_this.positions.current > 0 && !(params.freemode && !params.freemodefluid)) {
                    _this.positions.current = 0;
                }
                //resistance for after-end sliding
                if (_this.positions.current < -maxwrapperposition() && !(params.freemode && !params.freemodefluid)) {
                    _this.positions.current = -maxwrapperposition();
                }
            }
            //move slides
            if (!params.followfinger) return;

            if (!params.movestartthreshold) {
                _this.setwrappertranslate(_this.positions.current);
            }
            else {
                if (math.abs(_this.touches.current - _this.touches.start) > params.movestartthreshold || allowthresholdmove) {
                    if (!allowthresholdmove) {
                        allowthresholdmove = true;
                        _this.touches.start = _this.touches.current;
                        return;
                    }
                    _this.setwrappertranslate(_this.positions.current);
                }
                else {
                    _this.positions.current = _this.positions.start;
                }
            }

            if (params.freemode || params.watchactiveindex) {
                _this.updateactiveslide(_this.positions.current);
            }

            //grab cursor
            if (params.grabcursor) {
                _this.container.style.cursor = 'move';
                _this.container.style.cursor = 'grabbing';
                _this.container.style.cursor = '-moz-grabbin';
                _this.container.style.cursor = '-webkit-grabbing';
            }
            //velocity
            if (!velocityprevposition) velocityprevposition = _this.touches.current;
            if (!velocityprevtime) velocityprevtime = (new date()).gettime();
            _this.velocity = (_this.touches.current - velocityprevposition) / ((new date()).gettime() - velocityprevtime) / 2;
            if (math.abs(_this.touches.current - velocityprevposition) < 2) _this.velocity = 0;
            velocityprevposition = _this.touches.current;
            velocityprevtime = (new date()).gettime();
            //callbacks
            _this.callplugins('ontouchmoveend');
            if (params.ontouchmove) _this.firecallback(params.ontouchmove, _this, event);

            return false;
        }
    }
    function ontouchend(event) {
        //check for scrolling
        if (isscrolling) {
            _this.swipereset();
        }
        // if slider is not touched exit
        if (params.onlyexternal || !_this.istouched) return;
        _this.istouched = false;

        //return grab cursor
        if (params.grabcursor) {
            _this.container.style.cursor = 'move';
            _this.container.style.cursor = 'grab';
            _this.container.style.cursor = '-moz-grab';
            _this.container.style.cursor = '-webkit-grab';
        }

        //check for current position
        if (!_this.positions.current && _this.positions.current !== 0) {
            _this.positions.current = _this.positions.start;
        }

        //for case if slider touched but not moved
        if (params.followfinger) {
            _this.setwrappertranslate(_this.positions.current);
        }

        // touchendtime
        _this.times.end = (new date()).gettime();

        //difference
        _this.touches.diff = _this.touches.current - _this.touches.start;
        _this.touches.abs = math.abs(_this.touches.diff);

        _this.positions.diff = _this.positions.current - _this.positions.start;
        _this.positions.abs = math.abs(_this.positions.diff);

        var diff = _this.positions.diff;
        var diffabs = _this.positions.abs;
        var timediff = _this.times.end - _this.times.start;

        if (diffabs < 5 && (timediff) < 300 && _this.allowlinks === false) {
            if (!params.freemode && diffabs !== 0) _this.swipereset();
            //release inner links
            if (params.preventlinks) {
                _this.allowlinks = true;
            }
            if (params.onslideclick) {
                _this.allowslideclick = true;
            }
        }

        settimeout(function () {
            //release inner links
            if (typeof _this === 'undefined' || _this === null) return;
            if (params.preventlinks) {
                _this.allowlinks = true;
            }
            if (params.onslideclick) {
                _this.allowslideclick = true;
            }
        }, 100);

        var maxposition = maxwrapperposition();

        //not moved or prevent negative back sliding/after-end sliding
        if (!_this.ismoved && params.freemode) {
            _this.ismoved = false;
            if (params.ontouchend) _this.firecallback(params.ontouchend, _this, event);
            _this.callplugins('ontouchend');
            return;
        }
        if (!_this.ismoved || _this.positions.current > 0 || _this.positions.current < -maxposition) {
            _this.swipereset();
            if (params.ontouchend) _this.firecallback(params.ontouchend, _this, event);
            _this.callplugins('ontouchend');
            return;
        }

        _this.ismoved = false;

        //free mode
        if (params.freemode) {
            if (params.freemodefluid) {
                var momentumduration = 1000 * params.momentumratio;
                var momentumdistance = _this.velocity * momentumduration;
                var newposition = _this.positions.current + momentumdistance;
                var dobounce = false;
                var afterbounceposition;
                var bounceamount = math.abs(_this.velocity) * 20 * params.momentumbounceratio;
                if (newposition < -maxposition) {
                    if (params.momentumbounce && _this.support.transitions) {
                        if (newposition + maxposition < -bounceamount) newposition = -maxposition - bounceamount;
                        afterbounceposition = -maxposition;
                        dobounce = true;
                        allowmomentumbounce = true;
                    }
                    else newposition = -maxposition;
                }
                if (newposition > 0) {
                    if (params.momentumbounce && _this.support.transitions) {
                        if (newposition > bounceamount) newposition = bounceamount;
                        afterbounceposition = 0;
                        dobounce = true;
                        allowmomentumbounce = true;
                    }
                    else newposition = 0;
                }
                //fix duration
                if (_this.velocity !== 0) momentumduration = math.abs((newposition - _this.positions.current) / _this.velocity);

                _this.setwrappertranslate(newposition);

                _this.setwrappertransition(momentumduration);

                if (params.momentumbounce && dobounce) {
                    _this.wrappertransitionend(function () {
                        if (!allowmomentumbounce) return;
                        if (params.onmomentumbounce) _this.firecallback(params.onmomentumbounce, _this);
                        _this.callplugins('onmomentumbounce');

                        _this.setwrappertranslate(afterbounceposition);
                        _this.setwrappertransition(300);
                    });
                }

                _this.updateactiveslide(newposition);
            }
            if (!params.freemodefluid || timediff >= 300) _this.updateactiveslide(_this.positions.current);

            if (params.ontouchend) _this.firecallback(params.ontouchend, _this, event);
            _this.callplugins('ontouchend');
            return;
        }

        //direction
        direction = diff < 0 ? 'tonext' : 'toprev';

        //short touches
        if (direction === 'tonext' && (timediff <= 300)) {
            if (diffabs < 30 || !params.shortswipes) _this.swipereset();
            else _this.swipenext(true, true);
        }

        if (direction === 'toprev' && (timediff <= 300)) {
            if (diffabs < 30 || !params.shortswipes) _this.swipereset();
            else _this.swipeprev(true, true);
        }

        //long touches
        var targetslidesize = 0;
        if (params.slidesperview === 'auto') {
            //define current slide's width
            var currentposition = math.abs(_this.getwrappertranslate());
            var slidesoffset = 0;
            var _slidesize;
            for (var i = 0; i < _this.slides.length; i++) {
                _slidesize = ish ? _this.slides[i].getwidth(true, params.roundlengths) : _this.slides[i].getheight(true, params.roundlengths);
                slidesoffset += _slidesize;
                if (slidesoffset > currentposition) {
                    targetslidesize = _slidesize;
                    break;
                }
            }
            if (targetslidesize > containersize) targetslidesize = containersize;
        }
        else {
            targetslidesize = slidesize * params.slidesperview;
        }
        if (direction === 'tonext' && (timediff > 300)) {
            if (diffabs >= targetslidesize * params.longswipesratio) {
                _this.swipenext(true, true);
            }
            else {
                _this.swipereset();
            }
        }
        if (direction === 'toprev' && (timediff > 300)) {
            if (diffabs >= targetslidesize * params.longswipesratio) {
                _this.swipeprev(true, true);
            }
            else {
                _this.swipereset();
            }
        }
        if (params.ontouchend) _this.firecallback(params.ontouchend, _this, event);
        _this.callplugins('ontouchend');
    }


    /*==================================================
        noswiping bubble check by isaac strack
    ====================================================*/
    function hasclass(el, classname) {
        return el && el.getattribute('class') && el.getattribute('class').indexof(classname) > -1;
    }
    function noswipingslide(el) {
        /*this function is specifically designed to check the parent elements for the noswiping class, up to the wrapper.
        we need to check parents because while ontouchstart bubbles, _this.istouched is checked in ontouchstart, which stops the bubbling.
        so, if a text box, for example, is the initial target, and the parent slide container has the noswiping class, the _this.istouched
        check will never find it, and what was supposed to be noswiping is able to be swiped.
        this function will iterate up and check for the noswiping class in parents, up through the wrapperclass.*/

        // first we create a truthy variable, which is that swiping is allowd (noswiping = false)
        var noswiping = false;

        // now we iterate up (parentelements) until we reach the node with the wrapperclass.
        do {

            // each time, we check to see if there's a 'swiper-no-swiping' class (noswipingclass).
            if (hasclass(el, params.noswipingclass))
            {
                noswiping = true; // if there is, we set noswiping = true;
            }

            el = el.parentelement;  // now we iterate up (parent node)

        } while (!noswiping && el.parentelement && !hasclass(el, params.wrapperclass)); // also include el.parentelement truthy, just in case.

        // because we didn't check the wrapper itself, we do so now, if noswiping is false:
        if (!noswiping && hasclass(el, params.wrapperclass) && hasclass(el,params.noswipingclass))
            noswiping = true; // if the wrapper has the noswipingclass, we set noswiping = true;

        return noswiping;
    }

    function addclasstohtmlstring(klass, outerhtml) {
        var par = document.createelement('div');
        var child;

        par.innerhtml = outerhtml;
        child = par.firstchild;
        child.classname += ' ' + klass;

        return child.outerhtml;
    }


    /*==================================================
        swipe functions
    ====================================================*/
    _this.swipenext = function (runcallbacks, internal) {
        if (typeof runcallbacks === 'undefined') runcallbacks = true;
        if (!internal && params.loop) _this.fixloop();
        if (!internal && params.autoplay) _this.stopautoplay(true);
        _this.callplugins('onswipenext');
        var currentposition = _this.getwrappertranslate().tofixed(2);
        var newposition = currentposition;
        if (params.slidesperview === 'auto') {
            for (var i = 0; i < _this.snapgrid.length; i++) {
                if (-currentposition >= _this.snapgrid[i].tofixed(2) && -currentposition < _this.snapgrid[i + 1].tofixed(2)) {
                    newposition = -_this.snapgrid[i + 1];
                    break;
                }
            }
        }
        else {
            var groupsize = slidesize * params.slidespergroup;
            newposition = -(math.floor(math.abs(currentposition) / math.floor(groupsize)) * groupsize + groupsize);
        }
        if (newposition < -maxwrapperposition()) {
            newposition = -maxwrapperposition();
        }
        if (newposition === currentposition) return false;
        swipetoposition(newposition, 'next', {runcallbacks: runcallbacks});
        return true;
    };
    _this.swipeprev = function (runcallbacks, internal) {
        if (typeof runcallbacks === 'undefined') runcallbacks = true;
        if (!internal && params.loop) _this.fixloop();
        if (!internal && params.autoplay) _this.stopautoplay(true);
        _this.callplugins('onswipeprev');

        var currentposition = math.ceil(_this.getwrappertranslate());
        var newposition;
        if (params.slidesperview === 'auto') {
            newposition = 0;
            for (var i = 1; i < _this.snapgrid.length; i++) {
                if (-currentposition === _this.snapgrid[i]) {
                    newposition = -_this.snapgrid[i - 1];
                    break;
                }
                if (-currentposition > _this.snapgrid[i] && -currentposition < _this.snapgrid[i + 1]) {
                    newposition = -_this.snapgrid[i];
                    break;
                }
            }
        }
        else {
            var groupsize = slidesize * params.slidespergroup;
            newposition = -(math.ceil(-currentposition / groupsize) - 1) * groupsize;
        }

        if (newposition > 0) newposition = 0;

        if (newposition === currentposition) return false;
        swipetoposition(newposition, 'prev', {runcallbacks: runcallbacks});
        return true;

    };
    _this.swipereset = function (runcallbacks) {
        if (typeof runcallbacks === 'undefined') runcallbacks = true;
        _this.callplugins('onswipereset');
        var currentposition = _this.getwrappertranslate();
        var groupsize = slidesize * params.slidespergroup;
        var newposition;
        var maxposition = -maxwrapperposition();
        if (params.slidesperview === 'auto') {
            newposition = 0;
            for (var i = 0; i < _this.snapgrid.length; i++) {
                if (-currentposition === _this.snapgrid[i]) return;
                if (-currentposition >= _this.snapgrid[i] && -currentposition < _this.snapgrid[i + 1]) {
                    if (_this.positions.diff > 0) newposition = -_this.snapgrid[i + 1];
                    else newposition = -_this.snapgrid[i];
                    break;
                }
            }
            if (-currentposition >= _this.snapgrid[_this.snapgrid.length - 1]) newposition = -_this.snapgrid[_this.snapgrid.length - 1];
            if (currentposition <= -maxwrapperposition()) newposition = -maxwrapperposition();
        }
        else {
            newposition = currentposition < 0 ? math.round(currentposition / groupsize) * groupsize : 0;
            if (currentposition <= -maxwrapperposition()) newposition = -maxwrapperposition();
        }
        if (params.scrollcontainer)  {
            newposition = currentposition < 0 ? currentposition : 0;
        }
        if (newposition < -maxwrapperposition()) {
            newposition = -maxwrapperposition();
        }
        if (params.scrollcontainer && (containersize > slidesize)) {
            newposition = 0;
        }

        if (newposition === currentposition) return false;

        swipetoposition(newposition, 'reset', {runcallbacks: runcallbacks});
        return true;
    };

    _this.swipeto = function (index, speed, runcallbacks) {
        index = parseint(index, 10);
        _this.callplugins('onswipeto', {index: index, speed: speed});
        if (params.loop) index = index + _this.loopedslides;
        var currentposition = _this.getwrappertranslate();
        if (index > (_this.slides.length - 1) || index < 0) return;
        var newposition;
        if (params.slidesperview === 'auto') {
            newposition = -_this.slidesgrid[index];
        }
        else {
            newposition = -index * slidesize;
        }
        if (newposition < - maxwrapperposition()) {
            newposition = - maxwrapperposition();
        }

        if (newposition === currentposition) return false;

        if (typeof runcallbacks === 'undefined') runcallbacks = true;
        swipetoposition(newposition, 'to', {index: index, speed: speed, runcallbacks: runcallbacks});
        return true;
    };

    function swipetoposition(newposition, action, tooptions) {
        var speed = (action === 'to' && tooptions.speed >= 0) ? tooptions.speed : params.speed;
        var timeold = + new date();

        function anim() {
            var timenew = + new date();
            var time = timenew - timeold;
            currentposition += animationstep * time / (1000 / 60);
            condition = direction === 'tonext' ? currentposition > newposition : currentposition < newposition;
            if (condition) {
                _this.setwrappertranslate(math.ceil(currentposition));
                _this._domanimating = true;
                window.settimeout(function () {
                    anim();
                }, 1000 / 60);
            }
            else {
                if (params.onslidechangeend) {
                    if (action === 'to') {
                        if (tooptions.runcallbacks === true) _this.firecallback(params.onslidechangeend, _this, direction);
                    }
                    else {
                        _this.firecallback(params.onslidechangeend, _this, direction);
                    }

                }
                _this.setwrappertranslate(newposition);
                _this._domanimating = false;
            }
        }

        if (_this.support.transitions || !params.domanimation) {
            _this.setwrappertranslate(newposition);
            _this.setwrappertransition(speed);
        }
        else {
            //try the dom animation
            var currentposition = _this.getwrappertranslate();
            var animationstep = math.ceil((newposition - currentposition) / speed * (1000 / 60));
            var direction = currentposition > newposition ? 'tonext' : 'toprev';
            var condition = direction === 'tonext' ? currentposition > newposition : currentposition < newposition;
            if (_this._domanimating) return;

            anim();
        }

        //update active slide index
        _this.updateactiveslide(newposition);

        //callbacks
        if (params.onslidenext && action === 'next' && tooptions.runcallbacks === true) {
            _this.firecallback(params.onslidenext, _this, newposition);
        }
        if (params.onslideprev && action === 'prev' && tooptions.runcallbacks === true) {
            _this.firecallback(params.onslideprev, _this, newposition);
        }
        //'reset' callback
        if (params.onslidereset && action === 'reset' && tooptions.runcallbacks === true) {
            _this.firecallback(params.onslidereset, _this, newposition);
        }

        //'next', 'prev' and 'to' callbacks
        if ((action === 'next' || action === 'prev' || action === 'to') && tooptions.runcallbacks === true)
            slidechangecallbacks(action);
    }
    /*==================================================
        transition callbacks
    ====================================================*/
    //prevent multiple callbacks
    _this._queuestartcallbacks = false;
    _this._queueendcallbacks = false;
    function slidechangecallbacks(direction) {
        //transition start callback
        _this.callplugins('onslidechangestart');
        if (params.onslidechangestart) {
            if (params.queuestartcallbacks && _this.support.transitions) {
                if (_this._queuestartcallbacks) return;
                _this._queuestartcallbacks = true;
                _this.firecallback(params.onslidechangestart, _this, direction);
                _this.wrappertransitionend(function () {
                    _this._queuestartcallbacks = false;
                });
            }
            else _this.firecallback(params.onslidechangestart, _this, direction);
        }
        //transition end callback
        if (params.onslidechangeend) {
            if (_this.support.transitions) {
                if (params.queueendcallbacks) {
                    if (_this._queueendcallbacks) return;
                    _this._queueendcallbacks = true;
                    _this.wrappertransitionend(function (swiper) {
                        _this.firecallback(params.onslidechangeend, swiper, direction);
                    });
                }
                else {
                    _this.wrappertransitionend(function (swiper) {
                        _this.firecallback(params.onslidechangeend, swiper, direction);
                    });
                }
            }
            else {
                if (!params.domanimation) {
                    settimeout(function () {
                        _this.firecallback(params.onslidechangeend, _this, direction);
                    }, 10);
                }
            }
        }
    }

    /*==================================================
        update active slide index
    ====================================================*/
    _this.updateactiveslide = function (position) {
        if (!_this.initialized) return;
        if (_this.slides.length === 0) return;
        _this.previousindex = _this.activeindex;
        if (typeof position === 'undefined') position = _this.getwrappertranslate();
        if (position > 0) position = 0;
        var i;
        if (params.slidesperview === 'auto') {
            var slidesoffset = 0;
            _this.activeindex = _this.slidesgrid.indexof(-position);
            if (_this.activeindex < 0) {
                for (i = 0; i < _this.slidesgrid.length - 1; i++) {
                    if (-position > _this.slidesgrid[i] && -position < _this.slidesgrid[i + 1]) {
                        break;
                    }
                }
                var leftdistance = math.abs(_this.slidesgrid[i] + position);
                var rightdistance = math.abs(_this.slidesgrid[i + 1] + position);
                if (leftdistance <= rightdistance) _this.activeindex = i;
                else _this.activeindex = i + 1;
            }
        }
        else {
            _this.activeindex = math[params.visibilityfullfit ? 'ceil' : 'round'](-position / slidesize);
        }

        if (_this.activeindex === _this.slides.length) _this.activeindex = _this.slides.length - 1;
        if (_this.activeindex < 0) _this.activeindex = 0;

        // check for slide
        if (!_this.slides[_this.activeindex]) return;

        // calc visible slides
        _this.calcvisibleslides(position);

        // mark visible and active slides with additonal classes
        if (_this.support.classlist) {
            var slide;
            for (i = 0; i < _this.slides.length; i++) {
                slide = _this.slides[i];
                slide.classlist.remove(params.slideactiveclass);
                if (_this.visibleslides.indexof(slide) >= 0) {
                    slide.classlist.add(params.slidevisibleclass);
                } else {
                    slide.classlist.remove(params.slidevisibleclass);
                }
            }
            _this.slides[_this.activeindex].classlist.add(params.slideactiveclass);
        } else {
            var activeclassregexp = new regexp('\\s*' + params.slideactiveclass);
            var inviewclassregexp = new regexp('\\s*' + params.slidevisibleclass);

            for (i = 0; i < _this.slides.length; i++) {
                _this.slides[i].classname = _this.slides[i].classname.replace(activeclassregexp, '').replace(inviewclassregexp, '');
                if (_this.visibleslides.indexof(_this.slides[i]) >= 0) {
                    _this.slides[i].classname += ' ' + params.slidevisibleclass;
                }
            }
            _this.slides[_this.activeindex].classname += ' ' + params.slideactiveclass;
        }

        //update loop index
        if (params.loop) {
            var ls = _this.loopedslides;
            _this.activeloopindex = _this.activeindex - ls;
            if (_this.activeloopindex >= _this.slides.length - ls * 2) {
                _this.activeloopindex = _this.slides.length - ls * 2 - _this.activeloopindex;
            }
            if (_this.activeloopindex < 0) {
                _this.activeloopindex = _this.slides.length - ls * 2 + _this.activeloopindex;
            }
            if (_this.activeloopindex < 0) _this.activeloopindex = 0;
        }
        else {
            _this.activeloopindex = _this.activeindex;
        }
        //update pagination
        if (params.pagination) {
            _this.updatepagination(position);
        }
    };
    /*==================================================
        pagination
    ====================================================*/
    _this.createpagination = function (firstinit) {
        if (params.paginationclickable && _this.paginationbuttons) {
            removepaginationevents();
        }
        _this.paginationcontainer = params.pagination.nodetype ? params.pagination : $$(params.pagination)[0];
        if (params.createpagination) {
            var paginationhtml = '';
            var numofslides = _this.slides.length;
            var numofbuttons = numofslides;
            if (params.loop) numofbuttons -= _this.loopedslides * 2;
            for (var i = 0; i < numofbuttons; i++) {
                paginationhtml += '<' + params.paginationelement + ' class="' + params.paginationelementclass + '"></' + params.paginationelement + '>';
            }
            _this.paginationcontainer.innerhtml = paginationhtml;
        }
        _this.paginationbuttons = $$('.' + params.paginationelementclass, _this.paginationcontainer);
        if (!firstinit) _this.updatepagination();
        _this.callplugins('oncreatepagination');
        if (params.paginationclickable) {
            addpaginationevents();
        }
    };
    function removepaginationevents() {
        var pagers = _this.paginationbuttons;
        if (pagers) {
            for (var i = 0; i < pagers.length; i++) {
                _this.h.removeeventlistener(pagers[i], 'click', paginationclick);
            }
        }
    }
    function addpaginationevents() {
        var pagers = _this.paginationbuttons;
        if (pagers) {
            for (var i = 0; i < pagers.length; i++) {
                _this.h.addeventlistener(pagers[i], 'click', paginationclick);
            }
        }
    }
    function paginationclick(e) {
        var index;
        var target = e.target || e.srcelement;
        var pagers = _this.paginationbuttons;
        for (var i = 0; i < pagers.length; i++) {
            if (target === pagers[i]) index = i;
        }
        if (params.autoplay) _this.stopautoplay(true);
        _this.swipeto(index);
    }
    _this.updatepagination = function (position) {
        if (!params.pagination) return;
        if (_this.slides.length < 1) return;
        var activepagers = $$('.' + params.paginationactiveclass, _this.paginationcontainer);
        if (!activepagers) return;

        //reset all buttons' class to not active
        var pagers = _this.paginationbuttons;
        if (pagers.length === 0) return;
        for (var i = 0; i < pagers.length; i++) {
            pagers[i].classname = params.paginationelementclass;
        }

        var indexoffset = params.loop ? _this.loopedslides : 0;
        if (params.paginationasrange) {
            if (!_this.visibleslides) _this.calcvisibleslides(position);
            //get visible indexes
            var visibleindexes = [];
            var j; // lopp index - avoid jshint w004 / w038
            for (j = 0; j < _this.visibleslides.length; j++) {
                var visindex = _this.slides.indexof(_this.visibleslides[j]) - indexoffset;

                if (params.loop && visindex < 0) {
                    visindex = _this.slides.length - _this.loopedslides * 2 + visindex;
                }
                if (params.loop && visindex >= _this.slides.length - _this.loopedslides * 2) {
                    visindex = _this.slides.length - _this.loopedslides * 2 - visindex;
                    visindex = math.abs(visindex);
                }
                visibleindexes.push(visindex);
            }

            for (j = 0; j < visibleindexes.length; j++) {
                if (pagers[visibleindexes[j]]) pagers[visibleindexes[j]].classname += ' ' + params.paginationvisibleclass;
            }

            if (params.loop) {
                if (pagers[_this.activeloopindex] !== undefined) {
                    pagers[_this.activeloopindex].classname += ' ' + params.paginationactiveclass;
                }
            }
            else {
                if (pagers[_this.activeindex]) pagers[_this.activeindex].classname += ' ' + params.paginationactiveclass;
            }
        }
        else {
            if (params.loop) {
                if (pagers[_this.activeloopindex]) pagers[_this.activeloopindex].classname += ' ' + params.paginationactiveclass + ' ' + params.paginationvisibleclass;
            }
            else {
                if (pagers[_this.activeindex]) pagers[_this.activeindex].classname += ' ' + params.paginationactiveclass + ' ' + params.paginationvisibleclass;
            }
        }
    };
    _this.calcvisibleslides = function (position) {
        var visibleslides = [];
        var _slideleft = 0, _slidesize = 0, _slideright = 0;
        if (ish && _this.wrapperleft > 0) position = position + _this.wrapperleft;
        if (!ish && _this.wrappertop > 0) position = position + _this.wrappertop;

        for (var i = 0; i < _this.slides.length; i++) {
            _slideleft += _slidesize;
            if (params.slidesperview === 'auto')
                _slidesize  = ish ? _this.h.getwidth(_this.slides[i], true, params.roundlengths) : _this.h.getheight(_this.slides[i], true, params.roundlengths);
            else _slidesize = slidesize;

            _slideright = _slideleft + _slidesize;
            var isvisibile = false;
            if (params.visibilityfullfit) {
                if (_slideleft >= -position && _slideright <= -position + containersize) isvisibile = true;
                if (_slideleft <= -position && _slideright >= -position + containersize) isvisibile = true;
            }
            else {
                if (_slideright > -position && _slideright <= ((-position + containersize))) isvisibile = true;
                if (_slideleft >= -position && _slideleft < ((-position + containersize))) isvisibile = true;
                if (_slideleft < -position && _slideright > ((-position + containersize))) isvisibile = true;
            }

            if (isvisibile) visibleslides.push(_this.slides[i]);

        }
        if (visibleslides.length === 0) visibleslides = [_this.slides[_this.activeindex]];

        _this.visibleslides = visibleslides;
    };

    /*==========================================
        autoplay
    ============================================*/
    var autoplaytimeoutid, autoplayintervalid;
    _this.startautoplay = function () {
        if (_this.support.transitions) {
            if (typeof autoplaytimeoutid !== 'undefined') return false;
            if (!params.autoplay) return;
            _this.callplugins('onautoplaystart');
            if (params.onautoplaystart) _this.firecallback(params.onautoplaystart, _this);
            autoplay();
        }
        else {
            if (typeof autoplayintervalid !== 'undefined') return false;
            if (!params.autoplay) return;
            _this.callplugins('onautoplaystart');
            if (params.onautoplaystart) _this.firecallback(params.onautoplaystart, _this);
            autoplayintervalid = setinterval(function () {
                if (params.loop) {
                    _this.fixloop();
                    _this.swipenext(true, true);
                }
                else if (!_this.swipenext(true, true)) {
                    if (!params.autoplaystoponlast) _this.swipeto(0);
                    else {
                        clearinterval(autoplayintervalid);
                        autoplayintervalid = undefined;
                    }
                }
            }, params.autoplay);
        }
    };
    _this.stopautoplay = function (internal) {
        if (_this.support.transitions) {
            if (!autoplaytimeoutid) return;
            if (autoplaytimeoutid) cleartimeout(autoplaytimeoutid);
            autoplaytimeoutid = undefined;
            if (internal && !params.autoplaydisableoninteraction) {
                _this.wrappertransitionend(function () {
                    autoplay();
                });
            }
            _this.callplugins('onautoplaystop');
            if (params.onautoplaystop) _this.firecallback(params.onautoplaystop, _this);
        }
        else {
            if (autoplayintervalid) clearinterval(autoplayintervalid);
            autoplayintervalid = undefined;
            _this.callplugins('onautoplaystop');
            if (params.onautoplaystop) _this.firecallback(params.onautoplaystop, _this);
        }
    };
    function autoplay() {
        autoplaytimeoutid = settimeout(function () {
            if (params.loop) {
                _this.fixloop();
                _this.swipenext(true, true);
            }
            else if (!_this.swipenext(true, true)) {
                if (!params.autoplaystoponlast) _this.swipeto(0);
                else {
                    cleartimeout(autoplaytimeoutid);
                    autoplaytimeoutid = undefined;
                }
            }
            _this.wrappertransitionend(function () {
                if (typeof autoplaytimeoutid !== 'undefined') autoplay();
            });
        }, params.autoplay);
    }
    /*==================================================
        loop
    ====================================================*/
    _this.loopcreated = false;
    _this.removeloopedslides = function () {
        if (_this.loopcreated) {
            for (var i = 0; i < _this.slides.length; i++) {
                if (_this.slides[i].getdata('looped') === true) _this.wrapper.removechild(_this.slides[i]);
            }
        }
    };

    _this.createloop = function () {
        if (_this.slides.length === 0) return;
        if (params.slidesperview === 'auto') {
            _this.loopedslides = params.loopedslides || 1;
        }
        else {
            _this.loopedslides = params.slidesperview + params.loopadditionalslides;
        }

        if (_this.loopedslides > _this.slides.length) {
            _this.loopedslides = _this.slides.length;
        }

        var slidefirsthtml = '',
            slidelasthtml = '',
            i;
        var slidessetfullhtml = '';
        /**
                loopedslides is too large if loopadditionalslides are set.
                need to divide the slides by maximum number of slides existing.

                @author        tomaz lovrec <tomaz.lovrec@blanc-noir.at>
        */
        var numslides = _this.slides.length;
        var fullslidesets = math.floor(_this.loopedslides / numslides);
        var remainderslides = _this.loopedslides % numslides;
        // assemble full sets of slides
        for (i = 0; i < (fullslidesets * numslides); i++) {
            var j = i;
            if (i >= numslides) {
                var over = math.floor(i / numslides);
                j = i - (numslides * over);
            }
            slidessetfullhtml += _this.slides[j].outerhtml;
        }
        // assemble remainder slides
        // assemble remainder appended to existing slides
        for (i = 0; i < remainderslides;i++) {
            slidelasthtml += addclasstohtmlstring(params.slideduplicateclass, _this.slides[i].outerhtml);
        }
        // assemble slides that get preppended to existing slides
        for (i = numslides - remainderslides; i < numslides;i++) {
            slidefirsthtml += addclasstohtmlstring(params.slideduplicateclass, _this.slides[i].outerhtml);
        }
        // assemble all slides
        var slides = slidefirsthtml + slidessetfullhtml + wrapper.innerhtml + slidessetfullhtml + slidelasthtml;
        // set the slides
        wrapper.innerhtml = slides;

        _this.loopcreated = true;
        _this.calcslides();

        //update looped slides with special class
        for (i = 0; i < _this.slides.length; i++) {
            if (i < _this.loopedslides || i >= _this.slides.length - _this.loopedslides) _this.slides[i].setdata('looped', true);
        }
        _this.callplugins('oncreateloop');

    };

    _this.fixloop = function () {
        var newindex;
        //fix for negative oversliding
        if (_this.activeindex < _this.loopedslides) {
            newindex = _this.slides.length - _this.loopedslides * 3 + _this.activeindex;
            _this.swipeto(newindex, 0, false);
        }
        //fix for positive oversliding
        else if ((params.slidesperview === 'auto' && _this.activeindex >= _this.loopedslides * 2) || (_this.activeindex > _this.slides.length - params.slidesperview * 2)) {
            newindex = -_this.slides.length + _this.activeindex + _this.loopedslides;
            _this.swipeto(newindex, 0, false);
        }
    };

    /*==================================================
        slides loader
    ====================================================*/
    _this.loadslides = function () {
        var slideshtml = '';
        _this.activeloaderindex = 0;
        var slides = params.loader.slides;
        var slidestoload = params.loader.loadallslides ? slides.length : params.slidesperview * (1 + params.loader.surroundgroups);
        for (var i = 0; i < slidestoload; i++) {
            if (params.loader.slideshtmltype === 'outer') slideshtml += slides[i];
            else {
                slideshtml += '<' + params.slideelement + ' class="' + params.slideclass + '" data-swiperindex="' + i + '">' + slides[i] + '</' + params.slideelement + '>';
            }
        }
        _this.wrapper.innerhtml = slideshtml;
        _this.calcslides(true);
        //add permanent transitionend callback
        if (!params.loader.loadallslides) {
            _this.wrappertransitionend(_this.reloadslides, true);
        }
    };

    _this.reloadslides = function () {
        var slides = params.loader.slides;
        var newactiveindex = parseint(_this.activeslide().data('swiperindex'), 10);
        if (newactiveindex < 0 || newactiveindex > slides.length - 1) return; //<-- exit
        _this.activeloaderindex = newactiveindex;
        var firstindex = math.max(0, newactiveindex - params.slidesperview * params.loader.surroundgroups);
        var lastindex = math.min(newactiveindex + params.slidesperview * (1 + params.loader.surroundgroups) - 1, slides.length - 1);
        //update transforms
        if (newactiveindex > 0) {
            var newtransform = -slidesize * (newactiveindex - firstindex);
            _this.setwrappertranslate(newtransform);
            _this.setwrappertransition(0);
        }
        var i; // loop index
        //new slides
        if (params.loader.logic === 'reload') {
            _this.wrapper.innerhtml = '';
            var slideshtml = '';
            for (i = firstindex; i <= lastindex; i++) {
                slideshtml += params.loader.slideshtmltype === 'outer' ? slides[i] : '<' + params.slideelement + ' class="' + params.slideclass + '" data-swiperindex="' + i + '">' + slides[i] + '</' + params.slideelement + '>';
            }
            _this.wrapper.innerhtml = slideshtml;
        }
        else {
            var minexistindex = 1000;
            var maxexistindex = 0;

            for (i = 0; i < _this.slides.length; i++) {
                var index = _this.slides[i].data('swiperindex');
                if (index < firstindex || index > lastindex) {
                    _this.wrapper.removechild(_this.slides[i]);
                }
                else {
                    minexistindex = math.min(index, minexistindex);
                    maxexistindex = math.max(index, maxexistindex);
                }
            }
            for (i = firstindex; i <= lastindex; i++) {
                var newslide;
                if (i < minexistindex) {
                    newslide = document.createelement(params.slideelement);
                    newslide.classname = params.slideclass;
                    newslide.setattribute('data-swiperindex', i);
                    newslide.innerhtml = slides[i];
                    _this.wrapper.insertbefore(newslide, _this.wrapper.firstchild);
                }
                if (i > maxexistindex) {
                    newslide = document.createelement(params.slideelement);
                    newslide.classname = params.slideclass;
                    newslide.setattribute('data-swiperindex', i);
                    newslide.innerhtml = slides[i];
                    _this.wrapper.appendchild(newslide);
                }
            }
        }
        //reinit
        _this.reinit(true);
    };

    /*==================================================
        make swiper
    ====================================================*/
    function makeswiper() {
        _this.calcslides();
        if (params.loader.slides.length > 0 && _this.slides.length === 0) {
            _this.loadslides();
        }
        if (params.loop) {
            _this.createloop();
        }
        _this.init();
        initevents();
        if (params.pagination) {
            _this.createpagination(true);
        }

        if (params.loop || params.initialslide > 0) {
            _this.swipeto(params.initialslide, 0, false);
        }
        else {
            _this.updateactiveslide(0);
        }
        if (params.autoplay) {
            _this.startautoplay();
        }
        /**
         * set center slide index.
         *
         * @author        tomaz lovrec <tomaz.lovrec@gmail.com>
         */
        _this.centerindex = _this.activeindex;

        // callbacks
        if (params.onswipercreated) _this.firecallback(params.onswipercreated, _this);
        _this.callplugins('onswipercreated');
    }

    makeswiper();
};

swiper.prototype = {
    plugins : {},

    /*==================================================
        wrapper operations
    ====================================================*/
    wrappertransitionend : function (callback, permanent) {
        'use strict';
        var a = this,
            el = a.wrapper,
            events = ['webkittransitionend', 'transitionend', 'otransitionend', 'mstransitionend', 'mstransitionend'],
            i;

        function firecallback(e) {
            if (e.target !== el) return;
            callback(a);
            if (a.params.queueendcallbacks) a._queueendcallbacks = false;
            if (!permanent) {
                for (i = 0; i < events.length; i++) {
                    a.h.removeeventlistener(el, events[i], firecallback);
                }
            }
        }

        if (callback) {
            for (i = 0; i < events.length; i++) {
                a.h.addeventlistener(el, events[i], firecallback);
            }
        }
    },

    getwrappertranslate : function (axis) {
        'use strict';
        var el = this.wrapper,
            matrix, curtransform, curstyle, transformmatrix;

        // automatic axis detection
        if (typeof axis === 'undefined') {
            axis = this.params.mode === 'horizontal' ? 'x' : 'y';
        }

        if (this.support.transforms && this.params.usecss3transforms) {
            curstyle = window.getcomputedstyle(el, null);
            if (window.webkitcssmatrix) {
                // some old versions of webkit choke when 'none' is passed; pass
                // empty string instead in this case
                transformmatrix = new webkitcssmatrix(curstyle.webkittransform === 'none' ? '' : curstyle.webkittransform);
            }
            else {
                transformmatrix = curstyle.moztransform || curstyle.otransform || curstyle.mstransform || curstyle.mstransform  || curstyle.transform || curstyle.getpropertyvalue('transform').replace('translate(', 'matrix(1, 0, 0, 1,');
                matrix = transformmatrix.tostring().split(',');
            }

            if (axis === 'x') {
                //latest chrome and webkits fix
                if (window.webkitcssmatrix)
                    curtransform = transformmatrix.m41;
                //crazy ie10 matrix
                else if (matrix.length === 16)
                    curtransform = parsefloat(matrix[12]);
                //normal browsers
                else
                    curtransform = parsefloat(matrix[4]);
            }
            if (axis === 'y') {
                //latest chrome and webkits fix
                if (window.webkitcssmatrix)
                    curtransform = transformmatrix.m42;
                //crazy ie10 matrix
                else if (matrix.length === 16)
                    curtransform = parsefloat(matrix[13]);
                //normal browsers
                else
                    curtransform = parsefloat(matrix[5]);
            }
        }
        else {
            if (axis === 'x') curtransform = parsefloat(el.style.left, 10) || 0;
            if (axis === 'y') curtransform = parsefloat(el.style.top, 10) || 0;
        }
        return curtransform || 0;
    },

    setwrappertranslate : function (x, y, z) {
        'use strict';
        var es = this.wrapper.style,
            coords = {x: 0, y: 0, z: 0},
            translate;

        // passed all coordinates
        if (arguments.length === 3) {
            coords.x = x;
            coords.y = y;
            coords.z = z;
        }

        // passed one coordinate and optional axis
        else {
            if (typeof y === 'undefined') {
                y = this.params.mode === 'horizontal' ? 'x' : 'y';
            }
            coords[y] = x;
        }

        if (this.support.transforms && this.params.usecss3transforms) {
            translate = this.support.transforms3d ? 'translate3d(' + coords.x + 'px, ' + coords.y + 'px, ' + coords.z + 'px)' : 'translate(' + coords.x + 'px, ' + coords.y + 'px)';
            es.webkittransform = es.mstransform = es.mstransform = es.moztransform = es.otransform = es.transform = translate;
        }
        else {
            es.left = coords.x + 'px';
            es.top  = coords.y + 'px';
        }
        this.callplugins('onsetwrappertransform', coords);
        if (this.params.onsetwrappertransform) this.firecallback(this.params.onsetwrappertransform, this, coords);
    },

    setwrappertransition : function (duration) {
        'use strict';
        var es = this.wrapper.style;
        es.webkittransitionduration = es.mstransitionduration = es.mstransitionduration = es.moztransitionduration = es.otransitionduration = es.transitionduration = (duration / 1000) + 's';
        this.callplugins('onsetwrappertransition', {duration: duration});
        if (this.params.onsetwrappertransition) this.firecallback(this.params.onsetwrappertransition, this, duration);

    },

    /*==================================================
        helpers
    ====================================================*/
    h : {
        getwidth: function (el, outer, round) {
            'use strict';
            var width = window.getcomputedstyle(el, null).getpropertyvalue('width');
            var returnwidth = parsefloat(width);
            //ie fixes
            if (isnan(returnwidth) || width.indexof('%') > 0 || returnwidth < 0) {
                returnwidth = el.offsetwidth - parsefloat(window.getcomputedstyle(el, null).getpropertyvalue('padding-left')) - parsefloat(window.getcomputedstyle(el, null).getpropertyvalue('padding-right'));
            }
            if (outer) returnwidth += parsefloat(window.getcomputedstyle(el, null).getpropertyvalue('padding-left')) + parsefloat(window.getcomputedstyle(el, null).getpropertyvalue('padding-right'));
            if (round) return math.ceil(returnwidth);
            else return returnwidth;
        },
        getheight: function (el, outer, round) {
            'use strict';
            if (outer) return el.offsetheight;

            var height = window.getcomputedstyle(el, null).getpropertyvalue('height');
            var returnheight = parsefloat(height);
            //ie fixes
            if (isnan(returnheight) || height.indexof('%') > 0 || returnheight < 0) {
                returnheight = el.offsetheight - parsefloat(window.getcomputedstyle(el, null).getpropertyvalue('padding-top')) - parsefloat(window.getcomputedstyle(el, null).getpropertyvalue('padding-bottom'));
            }
            if (outer) returnheight += parsefloat(window.getcomputedstyle(el, null).getpropertyvalue('padding-top')) + parsefloat(window.getcomputedstyle(el, null).getpropertyvalue('padding-bottom'));
            if (round) return math.ceil(returnheight);
            else return returnheight;
        },
        getoffset: function (el) {
            'use strict';
            var box = el.getboundingclientrect();
            var body = document.body;
            var clienttop  = el.clienttop  || body.clienttop  || 0;
            var clientleft = el.clientleft || body.clientleft || 0;
            var scrolltop  = window.pageyoffset || el.scrolltop;
            var scrollleft = window.pagexoffset || el.scrollleft;
            if (document.documentelement && !window.pageyoffset) {
                //ie7-8
                scrolltop  = document.documentelement.scrolltop;
                scrollleft = document.documentelement.scrollleft;
            }
            return {
                top: box.top  + scrolltop  - clienttop,
                left: box.left + scrollleft - clientleft
            };
        },
        windowwidth : function () {
            'use strict';
            if (window.innerwidth) return window.innerwidth;
            else if (document.documentelement && document.documentelement.clientwidth) return document.documentelement.clientwidth;
        },
        windowheight : function () {
            'use strict';
            if (window.innerheight) return window.innerheight;
            else if (document.documentelement && document.documentelement.clientheight) return document.documentelement.clientheight;
        },
        windowscroll : function () {
            'use strict';
            if (typeof pageyoffset !== 'undefined') {
                return {
                    left: window.pagexoffset,
                    top: window.pageyoffset
                };
            }
            else if (document.documentelement) {
                return {
                    left: document.documentelement.scrollleft,
                    top: document.documentelement.scrolltop
                };
            }
        },

        addeventlistener : function (el, event, listener, usecapture) {
            'use strict';
            if (typeof usecapture === 'undefined') {
                usecapture = false;
            }

            if (el.addeventlistener) {
                el.addeventlistener(event, listener, usecapture);
            }
            else if (el.attachevent) {
                el.attachevent('on' + event, listener);
            }
        },

        removeeventlistener : function (el, event, listener, usecapture) {
            'use strict';
            if (typeof usecapture === 'undefined') {
                usecapture = false;
            }

            if (el.removeeventlistener) {
                el.removeeventlistener(event, listener, usecapture);
            }
            else if (el.detachevent) {
                el.detachevent('on' + event, listener);
            }
        }
    },
    settransform : function (el, transform) {
        'use strict';
        var es = el.style;
        es.webkittransform = es.mstransform = es.mstransform = es.moztransform = es.otransform = es.transform = transform;
    },
    settranslate : function (el, translate) {
        'use strict';
        var es = el.style;
        var pos = {
            x : translate.x || 0,
            y : translate.y || 0,
            z : translate.z || 0
        };
        var transformstring = this.support.transforms3d ? 'translate3d(' + (pos.x) + 'px,' + (pos.y) + 'px,' + (pos.z) + 'px)' : 'translate(' + (pos.x) + 'px,' + (pos.y) + 'px)';
        es.webkittransform = es.mstransform = es.mstransform = es.moztransform = es.otransform = es.transform = transformstring;
        if (!this.support.transforms) {
            es.left = pos.x + 'px';
            es.top = pos.y + 'px';
        }
    },
    settransition : function (el, duration) {
        'use strict';
        var es = el.style;
        es.webkittransitionduration = es.mstransitionduration = es.mstransitionduration = es.moztransitionduration = es.otransitionduration = es.transitionduration = duration + 'ms';
    },
    /*==================================================
        feature detection
    ====================================================*/
    support: {

        touch : (window.modernizr && modernizr.touch === true) || (function () {
            'use strict';
            return !!(('ontouchstart' in window) || window.documenttouch && document instanceof documenttouch);
        })(),

        transforms3d : (window.modernizr && modernizr.csstransforms3d === true) || (function () {
            'use strict';
            var div = document.createelement('div').style;
            return ('webkitperspective' in div || 'mozperspective' in div || 'operspective' in div || 'msperspective' in div || 'perspective' in div);
        })(),

        transforms : (window.modernizr && modernizr.csstransforms === true) || (function () {
            'use strict';
            var div = document.createelement('div').style;
            return ('transform' in div || 'webkittransform' in div || 'moztransform' in div || 'mstransform' in div || 'mstransform' in div || 'otransform' in div);
        })(),

        transitions : (window.modernizr && modernizr.csstransitions === true) || (function () {
            'use strict';
            var div = document.createelement('div').style;
            return ('transition' in div || 'webkittransition' in div || 'moztransition' in div || 'mstransition' in div || 'mstransition' in div || 'otransition' in div);
        })(),

        classlist : (function () {
            'use strict';
            var div = document.createelement('div');
            return 'classlist' in div;
        })()
    },

    browser : {

        ie8 : (function () {
            'use strict';
            var rv = -1; // return value assumes failure.
            if (navigator.appname === 'microsoft internet explorer') {
                var ua = navigator.useragent;
                var re = new regexp(/msie ([0-9]{1,}[\.0-9]{0,})/);
                if (re.exec(ua) !== null)
                    rv = parsefloat(regexp.$1);
            }
            return rv !== -1 && rv < 9;
        })(),

        ie10 : window.navigator.mspointerenabled,
        ie11 : window.navigator.pointerenabled
    }
};

/*=========================
  jquery & zepto plugins
  ===========================*/
if (window.jquery || window.zepto) {
    (function ($) {
        'use strict';
        $.fn.swiper = function (params) {
            var firstinstance;
            this.each(function (i) {
                var that = $(this);
                var s = new swiper(that[0], params);
                if (!i) firstinstance = s;
                that.data('swiper', s);
            });
            return firstinstance;
        };
    })(window.jquery || window.zepto);
}

// component
if (typeof(module) !== 'undefined')
{
    module.exports = swiper;
}

// requirejs support
if (typeof define === 'function' && define.amd) {
    define([], function () {
        'use strict';
        return swiper;
    });
}