/*!

* iScroll v4.1.9 ~ Copyright (c) 2011 Matteo Spinelli, http://cubiq.org
* Released under MIT license, http://cubiq.org/license
*/

(function(){ var m = Math,

    mround = function (r) { return r >> 0; },
    vendor = (/webkit/i).test(navigator.appVersion) ? 'webkit' :
            (/firefox/i).test(navigator.userAgent) ? 'Moz' :
            'opera' in window ? 'O' : '',

// Browser capabilities
isAndroid = (/android/gi).test(navigator.appVersion),
isIDevice = (/iphone|ipad/gi).test(navigator.appVersion),
isPlaybook = (/playbook/gi).test(navigator.appVersion),
isTouchPad = (/hp-tablet/gi).test(navigator.appVersion),

has3d = 'WebKitCSSMatrix' in window && 'm11' in new WebKitCSSMatrix(),
hasTouch = 'ontouchstart' in window && !isTouchPad,
hasTransform = vendor + 'Transform' in document.documentElement.style,
hasTransitionEnd = isIDevice || isPlaybook,

    nextFrame = (function() {
        return window.requestAnimationFrame
                    || window.webkitRequestAnimationFrame
                    || window.mozRequestAnimationFrame
                    || window.oRequestAnimationFrame
                    || window.msRequestAnimationFrame
                    || function(callback) { return setTimeout(callback, 1); }
    })(),
    cancelFrame = (function () {
        return window.cancelRequestAnimationFrame
                    || window.webkitCancelRequestAnimationFrame
                    || window.mozCancelRequestAnimationFrame
                    || window.oCancelRequestAnimationFrame
                    || window.msCancelRequestAnimationFrame
                    || clearTimeout
    })(),

    // Events
    RESIZE_EV = 'onorientationchange' in window ? 'orientationchange' : 'resize',
    START_EV = hasTouch ? 'touchstart' : 'mousedown',
    MOVE_EV = hasTouch ? 'touchmove' : 'mousemove',
    END_EV = hasTouch ? 'touchend' : 'mouseup',
    CANCEL_EV = hasTouch ? 'touchcancel' : 'mouseup',
    WHEEL_EV = vendor == 'Moz' ? 'DOMMouseScroll' : 'mousewheel',

    // Helpers
    trnOpen = 'translate' + (has3d ? '3d(' : '('),
    trnClose = has3d ? ',0)' : ')',

    // Constructor
    iScroll = function (el, options) {
            var that = this,
                    doc = document,
                    i;

            that.wrapper = typeof el == 'object' ? el : doc.getElementById(el);
            that.wrapper.style.overflow = 'hidden';
            that.scroller = that.wrapper.children[0];

            // Default options
            that.options = {
                    hScroll: true,
                    vScroll: true,
                    x: 0,
                    y: 0,
                    bounce: true,
                    bounceLock: false,
                    momentum: true,
                    lockDirection: true,
                    useTransform: true,
                    useTransition: false,
                    topOffset: 0,
                    checkDOMChanges: false,         // Experimental

                    // Scrollbar
                    hScrollbar: true,
                    vScrollbar: true,
                    fixedScrollbar: isAndroid,
                    hideScrollbar: isIDevice,
                    fadeScrollbar: isIDevice && has3d,
                    scrollbarClass: '',

                    // Zoom
                    zoom: false,
                    zoomMin: 1,
                    zoomMax: 4,
                    doubleTapZoom: 2,
                    wheelAction: 'scroll',

                    // Snap
                    snap: false,
                    snapThreshold: 1,

                    // Events
                    onRefresh: null,
                    onBeforeScrollStart: function (e) { e.preventDefault(); },
                    onScrollStart: null,
                    onBeforeScrollMove: null,
                    onScrollMove: null,
                    onBeforeScrollEnd: null,
                    onScrollEnd: null,
                    onTouchEnd: null,
                    onDestroy: null,
                    onZoomStart: null,
                    onZoom: null,
                    onZoomEnd: null
            };

            // User defined options
            for (i in options) that.options[i] = options[i];

            // Set starting position
            that.x = that.options.x;
            that.y = that.options.y;

            // Normalize options
            that.options.useTransform = hasTransform ? that.options.useTransform : false;
            that.options.hScrollbar = that.options.hScroll && that.options.hScrollbar;
            that.options.vScrollbar = that.options.vScroll && that.options.vScrollbar;
            that.options.zoom = that.options.useTransform && that.options.zoom;
            that.options.useTransition = hasTransitionEnd && that.options.useTransition;

            // Helpers FIX ANDROID BUG!
            // translate3d and scale doesn't work together! 
            // Ignoring 3d ONLY WHEN YOU SET that.options.zoom
            if ( that.options.zoom && isAndroid ){
                    trnOpen = 'translate(';
                    trnClose = ')';
            }

            // Set some default styles
            that.scroller.style[vendor + 'TransitionProperty'] = that.options.useTransform ? '-' + vendor.toLowerCase() + '-transform' : 'top left';
            that.scroller.style[vendor + 'TransitionDuration'] = '0';
            that.scroller.style[vendor + 'TransformOrigin'] = '0 0';
            if (that.options.useTransition) that.scroller.style[vendor + 'TransitionTimingFunction'] = 'cubic-bezier(0.33,0.66,0.66,1)';

            if (that.options.useTransform) that.scroller.style[vendor + 'Transform'] = trnOpen + that.x + 'px,' + that.y + 'px' + trnClose;
            else that.scroller.style.cssText += ';position:absolute;top:' + that.y + 'px;left:' + that.x + 'px';

            if (that.options.useTransition) that.options.fixedScrollbar = true;

            that.refresh();

            that._bind(RESIZE_EV, window);
            that._bind(START_EV);
            if (!hasTouch) {
                    that._bind('mouseout', that.wrapper);
                    if (that.options.wheelAction != 'none')
                            that._bind(WHEEL_EV);
            }

            if (that.options.checkDOMChanges) that.checkDOMTime = setInterval(function () {
                    that._checkDOMChanges();
            }, 500);
    };

// Prototype iScroll.prototype = {

enabled: true,
x: 0,
y: 0,
steps: [],
scale: 1,
currPageX: 0, currPageY: 0,
pagesX: [], pagesY: [],
aniTime: null,
wheelZoomCount: 0,

handleEvent: function (e) {
        var that = this;
        switch(e.type) {
                case START_EV:
                        if (!hasTouch && e.button !== 0) return;
                        that._start(e);
                        break;
                case MOVE_EV: that._move(e); break;
                case END_EV:
                case CANCEL_EV: that._end(e); break;
                case RESIZE_EV: that._resize(); break;
                case WHEEL_EV: that._wheel(e); break;
                case 'mouseout': that._mouseout(e); break;
                case 'webkitTransitionEnd': that._transitionEnd(e); break;
        }
},

_checkDOMChanges: function () {
        if (this.moved || this.zoomed || this.animating ||
                (this.scrollerW == this.scroller.offsetWidth * this.scale && this.scrollerH == this.scroller.offsetHeight * this.scale)) return;

        this.refresh();
},

_scrollbar: function (dir) {
        var that = this,
                doc = document,
                bar;

        if (!that[dir + 'Scrollbar']) {
                if (that[dir + 'ScrollbarWrapper']) {
                        if (hasTransform) that[dir + 'ScrollbarIndicator'].style[vendor + 'Transform'] = '';
                        that[dir + 'ScrollbarWrapper'].parentNode.removeChild(that[dir + 'ScrollbarWrapper']);
                        that[dir + 'ScrollbarWrapper'] = null;
                        that[dir + 'ScrollbarIndicator'] = null;
                }

                return;
        }

        if (!that[dir + 'ScrollbarWrapper']) {
                // Create the scrollbar wrapper
                bar = doc.createElement('div');

                if (that.options.scrollbarClass) bar.className = that.options.scrollbarClass + dir.toUpperCase();
                else bar.style.cssText = 'position:absolute;z-index:100;' + (dir == 'h' ? 'height:7px;bottom:1px;left:2px;right:' + (that.vScrollbar ? '7' : '2') + 'px' : 'width:7px;bottom:' + (that.hScrollbar ? '7' : '2') + 'px;top:2px;right:1px');

                bar.style.cssText += ';pointer-events:none;-' + vendor + '-transition-property:opacity;-' + vendor + '-transition-duration:' + (that.options.fadeScrollbar ? '350ms' : '0') + ';overflow:hidden;opacity:' + (that.options.hideScrollbar ? '0' : '1');

                that.wrapper.appendChild(bar);
                that[dir + 'ScrollbarWrapper'] = bar;

                // Create the scrollbar indicator
                bar = doc.createElement('div');
                if (!that.options.scrollbarClass) {
                        bar.style.cssText = 'position:absolute;z-index:100;background:rgba(0,0,0,0.5);border:1px solid rgba(255,255,255,0.9);-' + vendor + '-background-clip:padding-box;-' + vendor + '-box-sizing:border-box;' + (dir == 'h' ? 'height:100%' : 'width:100%') + ';-' + vendor + '-border-radius:3px;border-radius:3px';
                }
                bar.style.cssText += ';pointer-events:none;-' + vendor + '-transition-property:-' + vendor + '-transform;-' + vendor + '-transition-timing-function:cubic-bezier(0.33,0.66,0.66,1);-' + vendor + '-transition-duration:0;-' + vendor + '-transform:' + trnOpen + '0,0' + trnClose;
                if (that.options.useTransition) bar.style.cssText += ';-' + vendor + '-transition-timing-function:cubic-bezier(0.33,0.66,0.66,1)';

                that[dir + 'ScrollbarWrapper'].appendChild(bar);
                that[dir + 'ScrollbarIndicator'] = bar;
        }

        if (dir == 'h') {
                that.hScrollbarSize = that.hScrollbarWrapper.clientWidth;
                that.hScrollbarIndicatorSize = m.max(mround(that.hScrollbarSize * that.hScrollbarSize / that.scrollerW), 8);
                that.hScrollbarIndicator.style.width = that.hScrollbarIndicatorSize + 'px';
                that.hScrollbarMaxScroll = that.hScrollbarSize - that.hScrollbarIndicatorSize;
                that.hScrollbarProp = that.hScrollbarMaxScroll / that.maxScrollX;
        } else {
                that.vScrollbarSize = that.vScrollbarWrapper.clientHeight;
                that.vScrollbarIndicatorSize = m.max(mround(that.vScrollbarSize * that.vScrollbarSize / that.scrollerH), 8);
                that.vScrollbarIndicator.style.height = that.vScrollbarIndicatorSize + 'px';
                that.vScrollbarMaxScroll = that.vScrollbarSize - that.vScrollbarIndicatorSize;
                that.vScrollbarProp = that.vScrollbarMaxScroll / that.maxScrollY;
        }

        // Reset position
        that._scrollbarPos(dir, true);
},

_resize: function () {
        var that = this;
        setTimeout(function () { that.refresh(); }, isAndroid ? 200 : 0);
},

_pos: function (x, y) {
        x = this.hScroll ? x : 0;
        y = this.vScroll ? y : 0;

        if (this.options.useTransform) {
                this.scroller.style[vendor + 'Transform'] = trnOpen + x + 'px,' + y + 'px' + trnClose + ' scale(' + this.scale + ')';
        } else {
                x = mround(x);
                y = mround(y);
                this.scroller.style.left = x + 'px';
                this.scroller.style.top = y + 'px';
        }

        this.x = x;
        this.y = y;

        this._scrollbarPos('h');
        this._scrollbarPos('v');
},

_scrollbarPos: function (dir, hidden) {
        var that = this,
                pos = dir == 'h' ? that.x : that.y,
                size;

        if (!that[dir + 'Scrollbar']) return;

        pos = that[dir + 'ScrollbarProp'] * pos;

        if (pos < 0) {
                if (!that.options.fixedScrollbar) {
                        size = that[dir + 'ScrollbarIndicatorSize'] + mround(pos * 3);
                        if (size < 8) size = 8;
                        that[dir + 'ScrollbarIndicator'].style[dir == 'h' ? 'width' : 'height'] = size + 'px';
                }
                pos = 0;
        } else if (pos > that[dir + 'ScrollbarMaxScroll']) {
                if (!that.options.fixedScrollbar) {
                        size = that[dir + 'ScrollbarIndicatorSize'] - mround((pos - that[dir + 'ScrollbarMaxScroll']) * 3);
                        if (size < 8) size = 8;
                        that[dir + 'ScrollbarIndicator'].style[dir == 'h' ? 'width' : 'height'] = size + 'px';
                        pos = that[dir + 'ScrollbarMaxScroll'] + (that[dir + 'ScrollbarIndicatorSize'] - size);
                } else {
                        pos = that[dir + 'ScrollbarMaxScroll'];
                }
        }

        that[dir + 'ScrollbarWrapper'].style[vendor + 'TransitionDelay'] = '0';
        that[dir + 'ScrollbarWrapper'].style.opacity = hidden && that.options.hideScrollbar ? '0' : '1';
        that[dir + 'ScrollbarIndicator'].style[vendor + 'Transform'] = trnOpen + (dir == 'h' ? pos + 'px,0' : '0,' + pos + 'px') + trnClose;
},

_start: function (e) {
var that = this,
    point = hasTouch ? e.touches[0] : e,
    matrix, x, y,
    c1, c2,
    tagName = e.target.nodeName.toLowerCase();

if (tagName === "select" || tagName === "input" || tagName === "textarea") {
    e.target.focus();
    that.focusedInput = e.target;
    return;
}

if (that.focusedInput){
    that.focusedInput.blur();
    that.focusedInput = false;
}

        if (!that.enabled) return;

        if (that.options.onBeforeScrollStart) that.options.onBeforeScrollStart.call(that, e);

        if (that.options.useTransition || that.options.zoom) that._transitionTime(0);

        that.moved = false;
        that.animating = false;
        that.zoomed = false;
        that.distX = 0;
        that.distY = 0;
        that.absDistX = 0;
        that.absDistY = 0;
        that.dirX = 0;
        that.dirY = 0;

        // Gesture start
        if (that.options.zoom && hasTouch && e.touches.length > 1) {
                c1 = m.abs(e.touches[0].pageX-e.touches[1].pageX);
                c2 = m.abs(e.touches[0].pageY-e.touches[1].pageY);
                that.touchesDistStart = m.sqrt(c1 * c1 + c2 * c2);

                that.originX = m.abs(e.touches[0].pageX + e.touches[1].pageX - that.wrapperOffsetLeft * 2) / 2 - that.x;
                that.originY = m.abs(e.touches[0].pageY + e.touches[1].pageY - that.wrapperOffsetTop * 2) / 2 - that.y;

                if (that.options.onZoomStart) that.options.onZoomStart.call(that, e);
        }

        if (that.options.momentum) {
                if (that.options.useTransform) {
                        // Very lame general purpose alternative to CSSMatrix
                        matrix = getComputedStyle(that.scroller, null)[vendor + 'Transform'].replace(/[^0-9-.,]/g, '').split(',');
                        x = matrix[4] * 1;
                        y = matrix[5] * 1;
                } else {
                        x = getComputedStyle(that.scroller, null).left.replace(/[^0-9-]/g, '') * 1;
                        y = getComputedStyle(that.scroller, null).top.replace(/[^0-9-]/g, '') * 1;
                }

                if (x != that.x || y != that.y) {
                        if (that.options.useTransition) that._unbind('webkitTransitionEnd');
                        else cancelFrame(that.aniTime);
                        that.steps = [];
                        that._pos(x, y);
                }
        }

        that.absStartX = that.x;        // Needed by snap threshold
        that.absStartY = that.y;

        that.startX = that.x;
        that.startY = that.y;
        that.pointX = point.pageX;
        that.pointY = point.pageY;

        that.startTime = e.timeStamp || Date.now();

        if (that.options.onScrollStart) that.options.onScrollStart.call(that, e);

        that._bind(MOVE_EV);
        that._bind(END_EV);
        that._bind(CANCEL_EV);
},

_move: function (e) {
        var that = this,
                point = hasTouch ? e.touches[0] : e,
                deltaX = point.pageX - that.pointX,
                deltaY = point.pageY - that.pointY,
                newX = that.x + deltaX,
                newY = that.y + deltaY,
                c1, c2, scale,
                timestamp = e.timeStamp || Date.now();

        if (that.options.onBeforeScrollMove) that.options.onBeforeScrollMove.call(that, e);

        // Zoom
        if (that.options.zoom && hasTouch && e.touches.length > 1) {
                c1 = m.abs(e.touches[0].pageX - e.touches[1].pageX);
                c2 = m.abs(e.touches[0].pageY - e.touches[1].pageY);
                that.touchesDist = m.sqrt(c1*c1+c2*c2);

                that.zoomed = true;

                scale = 1 / that.touchesDistStart * that.touchesDist * this.scale;

                if (scale < that.options.zoomMin) scale = 0.5 * that.options.zoomMin * Math.pow(2.0, scale / that.options.zoomMin);
                else if (scale > that.options.zoomMax) scale = 2.0 * that.options.zoomMax * Math.pow(0.5, that.options.zoomMax / scale);

                that.lastScale = scale / this.scale;

                newX = this.originX - this.originX * that.lastScale + this.x,
                newY = this.originY - this.originY * that.lastScale + this.y;

                this.scroller.style[vendor + 'Transform'] = trnOpen + newX + 'px,' + newY + 'px' + trnClose + ' scale(' + scale + ')';

                if (that.options.onZoom) that.options.onZoom.call(that, e);
                return;
        }

        that.pointX = point.pageX;
        that.pointY = point.pageY;

        // Slow down if outside of the boundaries
        if (newX > 0 || newX < that.maxScrollX) {
                newX = that.options.bounce ? that.x + (deltaX / 2) : newX >= 0 || that.maxScrollX >= 0 ? 0 : that.maxScrollX;
        }
        if (newY > that.minScrollY || newY < that.maxScrollY) { 
                newY = that.options.bounce ? that.y + (deltaY / 2) : newY >= that.minScrollY || that.maxScrollY >= 0 ? that.minScrollY : that.maxScrollY;
        }

        if (that.absDistX < 6 && that.absDistY < 6) {
                that.distX += deltaX;
                that.distY += deltaY;
                that.absDistX = m.abs(that.distX);
                that.absDistY = m.abs(that.distY);

                return;
        }

        // Lock direction
        if (that.options.lockDirection) {
                if (that.absDistX > that.absDistY + 5) {
                        newY = that.y;
                        deltaY = 0;
                } else if (that.absDistY > that.absDistX + 5) {
                        newX = that.x;
                        deltaX = 0;
                }
        }

        that.moved = true;
        that._pos(newX, newY);
        that.dirX = deltaX > 0 ? -1 : deltaX < 0 ? 1 : 0;
        that.dirY = deltaY > 0 ? -1 : deltaY < 0 ? 1 : 0;

        if (timestamp - that.startTime > 300) {
                that.startTime = timestamp;
                that.startX = that.x;
                that.startY = that.y;
        }

        if (that.options.onScrollMove) that.options.onScrollMove.call(that, e);
},

_end: function (e) {
        if (hasTouch && e.touches.length != 0) return;

        var that = this,
                point = hasTouch ? e.changedTouches[0] : e,
                target, ev,
                momentumX = { dist:0, time:0 },
                momentumY = { dist:0, time:0 },
                duration = (e.timeStamp || Date.now()) - that.startTime,
                newPosX = that.x,
                newPosY = that.y,
                distX, distY,
                newDuration,
                snap,
                scale;

        that._unbind(MOVE_EV);
        that._unbind(END_EV);
        that._unbind(CANCEL_EV);

        if (that.options.onBeforeScrollEnd) that.options.onBeforeScrollEnd.call(that, e);

        if (that.zoomed) {
                scale = that.scale * that.lastScale;
                scale = Math.max(that.options.zoomMin, scale);
                scale = Math.min(that.options.zoomMax, scale);
                that.lastScale = scale / that.scale;
                that.scale = scale;

                that.x = that.originX - that.originX * that.lastScale + that.x;
                that.y = that.originY - that.originY * that.lastScale + that.y;

                that.scroller.style[vendor + 'TransitionDuration'] = '200ms';
                that.scroller.style[vendor + 'Transform'] = trnOpen + that.x + 'px,' + that.y + 'px' + trnClose + ' scale(' + that.scale + ')';

                that.zoomed = false;
                that.refresh();

                if (that.options.onZoomEnd) that.options.onZoomEnd.call(that, e);
                return;
        }

        if (!that.moved) {
                if (hasTouch) {
                        if (that.doubleTapTimer && that.options.zoom) {
                                // Double tapped
                                clearTimeout(that.doubleTapTimer);
                                that.doubleTapTimer = null;
                                if (that.options.onZoomStart) that.options.onZoomStart.call(that, e);
                                that.zoom(that.pointX, that.pointY, that.scale == 1 ? that.options.doubleTapZoom : 1);
                                if (that.options.onZoomEnd) {
                                        setTimeout(function() {
                                                that.options.onZoomEnd.call(that, e);
                                        }, 200); // 200 is default zoom duration
                                }
                        } else {
                                that.doubleTapTimer = setTimeout(function () {
                                        that.doubleTapTimer = null;

                                        // Find the last touched element
                                        target = point.target;
                                        while (target.nodeType != 1) target = target.parentNode;

                                        if (target.tagName != 'SELECT' && target.tagName != 'INPUT' && target.tagName != 'TEXTAREA') {
                                                ev = document.createEvent('MouseEvents');
                                                ev.initMouseEvent('click', true, true, e.view, 1,
                                                        point.screenX, point.screenY, point.clientX, point.clientY,
                                                        e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
                                                        0, null);
                                                ev._fake = true;
                                                target.dispatchEvent(ev);
                                        }
                                }, that.options.zoom ? 250 : 0);
                        }
                }

                that._resetPos(200);

                if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
                return;
        }

        if (duration < 300 && that.options.momentum) {
                momentumX = newPosX ? that._momentum(newPosX - that.startX, duration, -that.x, that.scrollerW - that.wrapperW + that.x, that.options.bounce ? that.wrapperW : 0) : momentumX;
                momentumY = newPosY ? that._momentum(newPosY - that.startY, duration, -that.y, (that.maxScrollY < 0 ? that.scrollerH - that.wrapperH + that.y - that.minScrollY : 0), that.options.bounce ? that.wrapperH : 0) : momentumY;

                newPosX = that.x + momentumX.dist;
                newPosY = that.y + momentumY.dist;

                if ((that.x > 0 && newPosX > 0) || (that.x < that.maxScrollX && newPosX < that.maxScrollX)) momentumX = { dist:0, time:0 };
                if ((that.y > that.minScrollY && newPosY > that.minScrollY) || (that.y < that.maxScrollY && newPosY < that.maxScrollY)) momentumY = { dist:0, time:0 };
        }

        if (momentumX.dist || momentumY.dist) {
                newDuration = m.max(m.max(momentumX.time, momentumY.time), 10);

                // Do we need to snap?
                if (that.options.snap) {
                        distX = newPosX - that.absStartX;
                        distY = newPosY - that.absStartY;
                        if (m.abs(distX) < that.options.snapThreshold && m.abs(distY) < that.options.snapThreshold) { that.scrollTo(that.absStartX, that.absStartY, 200); }
                        else {
                                snap = that._snap(newPosX, newPosY);
                                newPosX = snap.x;
                                newPosY = snap.y;
                                newDuration = m.max(snap.time, newDuration);
                        }
                }

                that.scrollTo(mround(newPosX), mround(newPosY), newDuration);

                if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
                return;
        }

        // Do we need to snap?
        if (that.options.snap) {
                distX = newPosX - that.absStartX;
                distY = newPosY - that.absStartY;
                if (m.abs(distX) < that.options.snapThreshold && m.abs(distY) < that.options.snapThreshold) that.scrollTo(that.absStartX, that.absStartY, 200);
                else {
                        snap = that._snap(that.x, that.y);
                        if (snap.x != that.x || snap.y != that.y) that.scrollTo(snap.x, snap.y, snap.time);
                }

                if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
                return;
        }

        that._resetPos(200);
        if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
},

_resetPos: function (time) {
        var that = this,
                resetX = that.x >= 0 ? 0 : that.x < that.maxScrollX ? that.maxScrollX : that.x,
                resetY = that.y >= that.minScrollY || that.maxScrollY > 0 ? that.minScrollY : that.y < that.maxScrollY ? that.maxScrollY : that.y;

        if (resetX == that.x && resetY == that.y) {
                if (that.moved) {
                        that.moved = false;
                        if (that.options.onScrollEnd) that.options.onScrollEnd.call(that);              // Execute custom code on scroll end
                }

                if (that.hScrollbar && that.options.hideScrollbar) {
                        if (vendor == 'webkit') that.hScrollbarWrapper.style[vendor + 'TransitionDelay'] = '300ms';
                        that.hScrollbarWrapper.style.opacity = '0';
                }
                if (that.vScrollbar && that.options.hideScrollbar) {
                        if (vendor == 'webkit') that.vScrollbarWrapper.style[vendor + 'TransitionDelay'] = '300ms';
                        that.vScrollbarWrapper.style.opacity = '0';
                }

                return;
        }

        that.scrollTo(resetX, resetY, time || 0);
},

_wheel: function (e) {
        var that = this,
                wheelDeltaX, wheelDeltaY,
                deltaX, deltaY,
                deltaScale;

        if ('wheelDeltaX' in e) {
                wheelDeltaX = e.wheelDeltaX / 12;
                wheelDeltaY = e.wheelDeltaY / 12;
        } else if ('detail' in e) {
                wheelDeltaX = wheelDeltaY = -e.detail * 3;
        } else {
                wheelDeltaX = wheelDeltaY = -e.wheelDelta;
        }

        if (that.options.wheelAction == 'zoom') {
                deltaScale = that.scale * Math.pow(2, 1/3 * (wheelDeltaY ? wheelDeltaY / Math.abs(wheelDeltaY) : 0));
                if (deltaScale < that.options.zoomMin) deltaScale = that.options.zoomMin;
                if (deltaScale > that.options.zoomMax) deltaScale = that.options.zoomMax;

                if (deltaScale != that.scale) {
                        if (!that.wheelZoomCount && that.options.onZoomStart) that.options.onZoomStart.call(that, e);
                        that.wheelZoomCount++;

                        that.zoom(e.pageX, e.pageY, deltaScale, 400);

                        setTimeout(function() {
                                that.wheelZoomCount--;
                                if (!that.wheelZoomCount && that.options.onZoomEnd) that.options.onZoomEnd.call(that, e);
                        }, 400);
                }

                return;
        }

        deltaX = that.x + wheelDeltaX;
        deltaY = that.y + wheelDeltaY;

        if (deltaX > 0) deltaX = 0;
        else if (deltaX < that.maxScrollX) deltaX = that.maxScrollX;

        if (deltaY > that.minScrollY) deltaY = that.minScrollY;
        else if (deltaY < that.maxScrollY) deltaY = that.maxScrollY;

        that.scrollTo(deltaX, deltaY, 0);
},

_mouseout: function (e) {
        var t = e.relatedTarget;

        if (!t) {
                this._end(e);
                return;
        }

        while (t = t.parentNode) if (t == this.wrapper) return;

        this._end(e);
},

_transitionEnd: function (e) {
        var that = this;

        if (e.target != that.scroller) return;

        that._unbind('webkitTransitionEnd');

        that._startAni();
},

/**
 *
 * Utilities
 *
 */
_startAni: function () {
        var that = this,
                startX = that.x, startY = that.y,
                startTime = Date.now(),
                step, easeOut,
                animate;

        if (that.animating) return;

        if (!that.steps.length) {
                that._resetPos(400);
                return;
        }

        step = that.steps.shift();

        if (step.x == startX && step.y == startY) step.time = 0;

        that.animating = true;
        that.moved = true;

        if (that.options.useTransition) {
                that._transitionTime(step.time);
                that._pos(step.x, step.y);
                that.animating = false;
                if (step.time) that._bind('webkitTransitionEnd');
                else that._resetPos(0);
                return;
        }

        animate = function () {
                var now = Date.now(),
                        newX, newY;

                if (now >= startTime + step.time) {
                        that._pos(step.x, step.y);
                        that.animating = false;
                        if (that.options.onAnimationEnd) that.options.onAnimationEnd.call(that);                        // Execute custom code on animation end
                        that._startAni();
                        return;
                }

                now = (now - startTime) / step.time - 1;
                easeOut = m.sqrt(1 - now * now);
                newX = (step.x - startX) * easeOut + startX;
                newY = (step.y - startY) * easeOut + startY;
                that._pos(newX, newY);
                if (that.animating) that.aniTime = nextFrame(animate);
        };

        animate();
},

_transitionTime: function (time) {
        time += 'ms';
        this.scroller.style[vendor + 'TransitionDuration'] = time;
        if (this.hScrollbar) this.hScrollbarIndicator.style[vendor + 'TransitionDuration'] = time;
        if (this.vScrollbar) this.vScrollbarIndicator.style[vendor + 'TransitionDuration'] = time;
},

_momentum: function (dist, time, maxDistUpper, maxDistLower, size) {
        var deceleration = 0.0006,
                speed = m.abs(dist) / time,
                newDist = (speed * speed) / (2 * deceleration),
                newTime = 0, outsideDist = 0;

        // Proportinally reduce speed if we are outside of the boundaries 
        if (dist > 0 && newDist > maxDistUpper) {
                outsideDist = size / (6 / (newDist / speed * deceleration));
                maxDistUpper = maxDistUpper + outsideDist;
                speed = speed * maxDistUpper / newDist;
                newDist = maxDistUpper;
        } else if (dist < 0 && newDist > maxDistLower) {
                outsideDist = size / (6 / (newDist / speed * deceleration));
                maxDistLower = maxDistLower + outsideDist;
                speed = speed * maxDistLower / newDist;
                newDist = maxDistLower;
        }

        newDist = newDist * (dist < 0 ? -1 : 1);
        newTime = speed / deceleration;

        return { dist: newDist, time: mround(newTime) };
},

_offset: function (el) {
        var left = -el.offsetLeft,
                top = -el.offsetTop;

        while (el = el.offsetParent) {
                left -= el.offsetLeft;
                top -= el.offsetTop;
        }

        if (el != this.wrapper) {
                left *= this.scale;
                top *= this.scale;
        }

        return { left: left, top: top };
},

_snap: function (x, y) {
        var that = this,
                i, l,
                page, time,
                sizeX, sizeY;

        // Check page X
        page = that.pagesX.length - 1;
        for (i=0, l=that.pagesX.length; i<l; i++) {
                if (x >= that.pagesX[i]) {
                        page = i;
                        break;
                }
        }
        if (page == that.currPageX && page > 0 && that.dirX < 0) page--;
        x = that.pagesX[page];
        sizeX = m.abs(x - that.pagesX[that.currPageX]);
        sizeX = sizeX ? m.abs(that.x - x) / sizeX * 500 : 0;
        that.currPageX = page;

        // Check page Y
        page = that.pagesY.length-1;
        for (i=0; i<page; i++) {
                if (y >= that.pagesY[i]) {
                        page = i;
                        break;
                }
        }
        if (page == that.currPageY && page > 0 && that.dirY < 0) page--;
        y = that.pagesY[page];
        sizeY = m.abs(y - that.pagesY[that.currPageY]);
        sizeY = sizeY ? m.abs(that.y - y) / sizeY * 500 : 0;
        that.currPageY = page;

        // Snap with constant speed (proportional duration)
        time = mround(m.max(sizeX, sizeY)) || 200;

        return { x: x, y: y, time: time };
},

_bind: function (type, el, bubble) {
        (el || this.scroller).addEventListener(type, this, !!bubble);
},

_unbind: function (type, el, bubble) {
        (el || this.scroller).removeEventListener(type, this, !!bubble);
},

/**
 *
 * Public methods
 *
 */
destroy: function () {
        var that = this;

        that.scroller.style[vendor + 'Transform'] = '';

        // Remove the scrollbars
        that.hScrollbar = false;
        that.vScrollbar = false;
        that._scrollbar('h');
        that._scrollbar('v');

        // Remove the event listeners
        that._unbind(RESIZE_EV, window);
        that._unbind(START_EV);
        that._unbind(MOVE_EV);
        that._unbind(END_EV);
        that._unbind(CANCEL_EV);

        if (!that.options.hasTouch) {
                that._unbind('mouseout', that.wrapper);
                that._unbind(WHEEL_EV);
        }

        if (that.options.useTransition) that._unbind('webkitTransitionEnd');

        if (that.options.checkDOMChanges) clearInterval(that.checkDOMTime);

        if (that.options.onDestroy) that.options.onDestroy.call(that);
},

refresh: function () {
        var that = this,
                offset,
                i, l,
                els,
                pos = 0,
                page = 0;

        if (that.scale < that.options.zoomMin) that.scale = that.options.zoomMin;
        that.wrapperW = that.wrapper.clientWidth || 1;
        that.wrapperH = that.wrapper.clientHeight || 1;

        that.minScrollY = -that.options.topOffset || 0;
        that.scrollerW = mround(that.scroller.offsetWidth * that.scale);
        that.scrollerH = mround((that.scroller.offsetHeight + that.minScrollY) * that.scale);
        that.maxScrollX = that.wrapperW - that.scrollerW;
        that.maxScrollY = that.wrapperH - that.scrollerH + that.minScrollY;
        that.dirX = 0;
        that.dirY = 0;

        if (that.options.onRefresh) that.options.onRefresh.call(that);

        that.hScroll = that.options.hScroll && that.maxScrollX < 0;
        that.vScroll = that.options.vScroll && (!that.options.bounceLock && !that.hScroll || that.scrollerH > that.wrapperH);

        that.hScrollbar = that.hScroll && that.options.hScrollbar;
        that.vScrollbar = that.vScroll && that.options.vScrollbar && that.scrollerH > that.wrapperH;

        offset = that._offset(that.wrapper);
        that.wrapperOffsetLeft = -offset.left;
        that.wrapperOffsetTop = -offset.top;

        // Prepare snap
        if (typeof that.options.snap == 'string') {
                that.pagesX = [];
                that.pagesY = [];
                els = that.scroller.querySelectorAll(that.options.snap);
                for (i=0, l=els.length; i<l; i++) {
                        pos = that._offset(els[i]);
                        pos.left += that.wrapperOffsetLeft;
                        pos.top += that.wrapperOffsetTop;
                        that.pagesX[i] = pos.left < that.maxScrollX ? that.maxScrollX : pos.left * that.scale;
                        that.pagesY[i] = pos.top < that.maxScrollY ? that.maxScrollY : pos.top * that.scale;
                }
        } else if (that.options.snap) {
                that.pagesX = [];
                while (pos >= that.maxScrollX) {
                        that.pagesX[page] = pos;
                        pos = pos - that.wrapperW;
                        page++;
                }
                if (that.maxScrollX%that.wrapperW) that.pagesX[that.pagesX.length] = that.maxScrollX - that.pagesX[that.pagesX.length-1] + that.pagesX[that.pagesX.length-1];

                pos = 0;
                page = 0;
                that.pagesY = [];
                while (pos >= that.maxScrollY) {
                        that.pagesY[page] = pos;
                        pos = pos - that.wrapperH;
                        page++;
                }
                if (that.maxScrollY%that.wrapperH) that.pagesY[that.pagesY.length] = that.maxScrollY - that.pagesY[that.pagesY.length-1] + that.pagesY[that.pagesY.length-1];
        }

        // Prepare the scrollbars
        that._scrollbar('h');
        that._scrollbar('v');

        if (!that.zoomed) {
                that.scroller.style[vendor + 'TransitionDuration'] = '0';
                that._resetPos(200);
        }
},

scrollTo: function (x, y, time, relative) {
        var that = this,
                step = x,
                i, l;

        that.stop();

        if (!step.length) step = [{ x: x, y: y, time: time, relative: relative }];

        for (i=0, l=step.length; i<l; i++) {
                if (step[i].relative) { step[i].x = that.x - step[i].x; step[i].y = that.y - step[i].y; }
                that.steps.push({ x: step[i].x, y: step[i].y, time: step[i].time || 0 });
        }

        that._startAni();
},

scrollToElement: function (el, time) {
        var that = this, pos;
        el = el.nodeType ? el : that.scroller.querySelector(el);
        if (!el) return;

        pos = that._offset(el);
        pos.left += that.wrapperOffsetLeft;
        pos.top += that.wrapperOffsetTop;

        pos.left = pos.left > 0 ? 0 : pos.left < that.maxScrollX ? that.maxScrollX : pos.left;
        pos.top = pos.top > that.minScrollY ? that.minScrollY : pos.top < that.maxScrollY ? that.maxScrollY : pos.top;
        time = time === undefined ? m.max(m.abs(pos.left)*2, m.abs(pos.top)*2) : time;

        that.scrollTo(pos.left, pos.top, time);
},

scrollToPage: function (pageX, pageY, time) {
        var that = this, x, y;

        time = time === undefined ? 400 : time;

        if (that.options.onScrollStart) that.options.onScrollStart.call(that);

        if (that.options.snap) {
                pageX = pageX == 'next' ? that.currPageX+1 : pageX == 'prev' ? that.currPageX-1 : pageX;
                pageY = pageY == 'next' ? that.currPageY+1 : pageY == 'prev' ? that.currPageY-1 : pageY;

                pageX = pageX < 0 ? 0 : pageX > that.pagesX.length-1 ? that.pagesX.length-1 : pageX;
                pageY = pageY < 0 ? 0 : pageY > that.pagesY.length-1 ? that.pagesY.length-1 : pageY;

                that.currPageX = pageX;
                that.currPageY = pageY;
                x = that.pagesX[pageX];
                y = that.pagesY[pageY];
        } else {
                x = -that.wrapperW * pageX;
                y = -that.wrapperH * pageY;
                if (x < that.maxScrollX) x = that.maxScrollX;
                if (y < that.maxScrollY) y = that.maxScrollY;
        }

        that.scrollTo(x, y, time);
},

disable: function () {
        this.stop();
        this._resetPos(0);
        this.enabled = false;

        // If disabled after touchstart we make sure that there are no left over events
        this._unbind(MOVE_EV);
        this._unbind(END_EV);
        this._unbind(CANCEL_EV);
},

enable: function () {
        this.enabled = true;
},

stop: function () {
        if (this.options.useTransition) this._unbind('webkitTransitionEnd');
        else cancelFrame(this.aniTime);
        this.steps = [];
        this.moved = false;
        this.animating = false;
},

zoom: function (x, y, scale, time) {
        var that = this,
                relScale = scale / that.scale;

        if (!that.options.useTransform) return;

        that.zoomed = true;
        time = time === undefined ? 200 : time;
        x = x - that.wrapperOffsetLeft - that.x;
        y = y - that.wrapperOffsetTop - that.y;
        that.x = x - x * relScale + that.x;
        that.y = y - y * relScale + that.y;

        that.scale = scale;
        that.refresh();

        that.x = that.x > 0 ? 0 : that.x < that.maxScrollX ? that.maxScrollX : that.x;
        that.y = that.y > that.minScrollY ? that.minScrollY : that.y < that.maxScrollY ? that.maxScrollY : that.y;

        that.scroller.style[vendor + 'TransitionDuration'] = time + 'ms';
        that.scroller.style[vendor + 'Transform'] = trnOpen + that.x + 'px,' + that.y + 'px' + trnClose + ' scale(' + scale + ')';
        that.zoomed = false;
},

isReady: function () {
        return !this.moved && !this.zoomed && !this.animating;
}

};

if (typeof exports !== 'undefined') exports.iScroll = iScroll; else window.iScroll = iScroll;

})();