导航栏目块在手机端需要左右拖动—请参考以下代码
演示地址:http://demo.datouwang.com/uploads/demo/jiaoben/2017/jiaoben789/
下载地址:http://www.datouwang.com/jiaoben/951.html

把相关代码粘出来了—欢迎来copy~~

index.html

<!DOCTYPE html> 
<html> 
<head>
<meta charset="utf-8">
<meta http-equiv="Pragma" content="no-cache">
<meta name="viewport" content="width=device-width initial-scale=1.0 user-scalable=no">
<meta name="format-detection" content="telephone=no">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
<title>jquery移动端触屏左右滑动导航代码演示_大头网</title>

<link href="css/datouwang.css" rel="stylesheet" type="text/css">

</head>
<body>
<!-- 代码 开始 -->
<h2 class="htit">demo示例一</h2>
<div class="wrapper wrapper01" id="retr">
<div class="scroller">
    <ul class="clearfix">
        <li><a href="javascript:void(0)">全部科目</a></li>
        <li><a href="javascript:void(0)">会计从业</a></li>
        <li><a href="javascript:void(0)">会计职称</a></li>
        <li><a href="javascript:void(0)">注会</a></li>
        <li><a href="javascript:void(0)">税务师</a></li>
        <li><a href="javascript:void(0)">国际证书</a></li>
        <li><a href="javascript:void(0)">更多</a></li>
        <li><a href="javascript:void(0)">更多注会</a></li>
        <li><a href="javascript:void(0)">国际证书2</a></li>
        <li><a href="javascript:void(0)">更多4</a></li>
        <li><a href="javascript:void(0)">更多5</a></li>
    </ul>
</div>
</div>

<h2 class="htit">demo示例二</h2>
<div class="wrapper wrapper02" id="wrapper02">
<div class="scroller">
    <ul class="clearfix">
        <li><a href="javascript:void(0)">全部科目</a></li>
        <li><a href="javascript:void(0)">会计从业</a></li>
        <li><a href="javascript:void(0)">会计职称</a></li>
        <li><a href="javascript:void(0)">注会</a></li>
        <li><a href="javascript:void(0)">税务师</a></li>
        <li><a href="javascript:void(0)">国际证书</a></li>
        <li><a href="javascript:void(0)">更多</a></li>
        <li><a href="javascript:void(0)">更多注会</a></li>
        <li><a href="javascript:void(0)">国际证书2</a></li>
        <li><a href="javascript:void(0)">更多4</a></li>
        <li><a href="javascript:void(0)">更多5</a></li>
    </ul>
</div>
</div>

<h2 class="htit">demo示例三</h2>
<div class="wrapper wrapper03" id="wrapper03">
<div class="scroller">
    <ul class="clearfix">
        <li><a href="javascript:void(0)">全部科目</a></li>
        <li><a href="javascript:void(0)">会计从业</a></li>
        <li><a href="javascript:void(0)">会计职称</a></li>
        <li><a href="javascript:void(0)">注会</a></li>
        <li><a href="javascript:void(0)">税务师</a></li>
        <li><a href="javascript:void(0)">国际证书</a></li>
        <li><a href="javascript:void(0)">更多</a></li>
        <li><a href="javascript:void(0)">更多注会</a></li>
        <li><a href="javascript:void(0)">国际证书2</a></li>
        <li><a href="javascript:void(0)">大头网</a></li>
        <li><a href="javascript:void(0)">更多5</a></li>
    </ul>
</div>
</div>

<h2 class="htit">demo示例四</h2>
<div class="wrapper wrapper04" id="sass">
<div class="scroller">
    <ul class="clearfix">
        <li><a href="javascript:void(0)">全部科目</a></li>
        <li><a href="javascript:void(0)">会计从业</a></li>
        <li><a href="javascript:void(0)">会计职称</a></li>
        <li><a href="javascript:void(0)">注会</a></li>
        <li><a href="javascript:void(0)">税务师</a></li>
        <li><a href="javascript:void(0)">国际证书</a></li>
        <li><a href="javascript:void(0)">更多</a></li>
        <li><a href="javascript:void(0)">更多注会</a></li>
        <li><a href="javascript:void(0)">国际证书2</a></li>
        <li><a href="javascript:void(0)">更多4</a></li>
        <li><a href="javascript:void(0)">更多5</a></li>
    </ul>
</div>
</div>

<h2 class="htit">demo示例五</h2>
<div class="wrapper02" id="demo05">
<div class="scroller">
    <ul class="clearfix">
        <li><a href="javascript:void(0)">全部科目</a></li>
        <li><a href="javascript:void(0)">会计从业</a></li>
        <li><a href="javascript:void(0)">会计职称</a></li>
        <li><a href="javascript:void(0)">注会</a></li>
        <li><a href="javascript:void(0)">税务师</a></li>
        <li><a href="javascript:void(0)">国际证书</a></li>
        <li><a href="javascript:void(0)">更多</a></li>
        <li><a href="javascript:void(0)">更多注会</a></li>
        <li><a href="javascript:void(0)">国际证书2</a></li>
        <li><a href="javascript:void(0)">更多4</a></li>
        <li><a href="javascript:void(0)">更多5</a></li>
    </ul>
</div>
</div>

<h2 class="htit">demo示例六</h2>
<div class="wrapper02" id="demo06">
<div class="scroller">
    <ul class="clearfix">
        <li><a href="javascript:void(0)">北京</a></li>
        <li><a href="javascript:void(0)">上海</a></li>
        <li><a href="javascript:void(0)">广州</a></li>
        <li><a href="javascript:void(0)">深证</a></li>
        <li><a href="javascript:void(0)">杭州</a></li>
        <li><a href="javascript:void(0)">武汉</a></li>
        <li><a href="javascript:void(0)">天津</a></li>
        <li><a href="javascript:void(0)">郑州</a></li>
        <li><a href="javascript:void(0)">海口</a></li>
        <li><a href="javascript:void(0)">郑州</a></li>
        <li><a href="javascript:void(0)">长春</a></li>
        <li><a href="javascript:void(0)">长沙</a></li>
        <li><a href="javascript:void(0)">南京</a></li>
        <li><a href="javascript:void(0)">西安</a></li>
    </ul>
</div>
</div>

<div style="padding:1rem .4rem;line-height:.6rem;font-size:.34rem">
    参数说明:<br />
    className:'cur' //当前选中点击元素的class类名<br />
    clickScrollTime:300 //点击后滑动时间<br />
    duibiScreenWidth:0.4 //单位以rem为准,默认为0.4rem<br />
    fingerClick:0 //目标第0或1个选项触发必须每一项长度一致,方可用此项<br />
    endClickScroll:function(thisObj){}//回调函数<br />
</div>

<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/flexible.js"></script>
<script type="text/javascript" src="js/iscroll.js"></script>
<script type="text/javascript" src="js/navbarscroll.js"></script>
<script type="text/javascript">
$(function(){

    //demo示例一到四 通过lass调取,一句可以搞定,用于页面中可能有多个导航的情况
    $('.wrapper').navbarscroll();

    //demo示例五 通过id调取
    $('#demo05').navbarscroll({
        defaultSelect:6
        endClickScroll:function(obj){
            console.log(obj.text())
        }
    });

    //demo示例六 通过id调取
    $('#demo06').navbarscroll({
        defaultSelect:3
        scrollerWidth:6
        fingerClick:1
        endClickScroll:function(obj){
            console.log(obj.text())
        }
    });
});
</script>
<!-- 代码 结束 -->

<div style="text-align:center;margin:50px 0; font:normal 14px/24px 'MicroSoft YaHei';">
<p>来源:<a href="http://www.datouwang.com/" target="_blank">大头网</a></p>
<p>转载请注明出处,此代码仅供学习交流,请勿用于商业用途。</p>
<p><script src="http://www.datouwang.com/img/js/demo_ad.js"></script><center style="display:none"><script src="http://www.datouwang.com/img/js/demo_tj.js"></script></center></p>
</div>

</body>
</html>

css/datouwang.css

/* DaTouWang URL: www.datouwang.com */
html{color:#000;overflow-y:scroll;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}
html *{outline:0;-webkit-text-size-adjust:none;-webkit-tap-highlight-color:rgba(0000)}
body {background:#FFF;color:#4a4f5a;font: 400 14px/1.5 "΢ÈíÑźÚ"HelveticaSTHeitiDroid Sans Fallback;-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;-webkit-tap-highlight-color:rgba(0000);}
bodydivdldtddulollih1h2h3h4h5h6precodeformfieldsetlegendinputtextareapblockquotethtdhrbuttonarticleasidedetailsfigcaptionfigurefooterheaderhgroupmenunavsection{margin:0;padding:0}
inputselecttextarea{font-size:100%}
articleasidefooterheadernavsectionaudiocanvasvideoimg {display: block;}
table{border-collapse:collapse;border-spacing:0}
fieldsetimg{border:0}
abbracronym{border:0;font-variant:normal}
del{text-decoration:line-through}
addresscaptioncitecodedfnemthvar{font-style:normal;font-weight:normal}
olul{list-style:none}
captionth{text-align:left}
h1h2h3h4h5h6{font-size:100%;font-weight:normal}
q:beforeq:after{content:''}
button{outline:0;border:none;}
a:hover{text-decoration:none}
insa{text-decoration:none}
textarea {resize: none;}
iframeimg {border:0;}
img{display:block;width:100%;}
ulol {list-style:none;}
inputselecttextarea {outline: 0;-webkit-user-modify: read-write-plaintext-only;}
input {-webkit-appearance: none;}
.pr{position:relative;}
.abs{position: absolute}
.fl{float:left;display:inline-block;}
.fr{float:right;display:inline-block;}
.clearfix:after{content:".";display:block;height:0;clear: both;visibility:hidden;}
.clearfix{*zoom:1;}
.wrap{min-width: 320px;max-width:768px;margin:0 auto;overflow:hidden;position:relative;}

.htit{line-height:1rem;padding:0 .3rem;color:#ff8e2e;font-size: .4rem;margin:1rem 0 .4rem 0}
.wrapper01 {position:relative;height: 3em;width: 100%;overflow: hidden;margin:0 auto;border-bottom:1px solid #ccc}
.wrapper01 .scroller {position:absolute}
.wrapper01 .scroller li {height: 1.5em;color:#333;float: left;line-height: 1.5em;font-size: 1.5em;text-align: center}
.wrapper01 .scroller li a{color:#333;display:block;margin:0 .3rem}
.wrapper01 .scroller li.cur a{color:#1cbb9b;}

.wrapper02 {position:relative;height: 1rem;width: 100%;overflow: hidden;margin:0 auto;background:#ddd}
.wrapper02 .scroller {position:absolute}
.wrapper02 .scroller li {height: 1rem;color:#333;float: left;line-height: 1rem;font-size: .4rem;text-align: center}
.wrapper02 .scroller li a{color:#333;display:block;margin:0 .3rem}
.wrapper02 .scroller li.cur{background:#1cbb9b}
.wrapper02 .scroller li.cur a{color:#fff;}

.wrapper03 {position:relative;height: 1rem;width: 100%;overflow: hidden;margin:0 auto;border-bottom:1px solid #ccc}
.wrapper03 .scroller {position:absolute}
.wrapper03 .scroller li {height: 1rem;color:#333;float: left;line-height: 1rem;font-size: .4rem;text-align: center}
.wrapper03 .scroller li a{color:#333;display:block;margin:0 .3rem;padding:0 .1rem}
.wrapper03 .scroller li.cur a{color:#1cbb9b;height:.9rem;border-bottom:.1rem solid #1cbb9b}

.wrapper04 {position:relative;height: 1rem;width: 80%;overflow: hidden;margin:0 auto;background:#ddd}
.wrapper04 .scroller {position:absolute}
.wrapper04 .scroller li {height: 1rem;color:#333;float: left;line-height: 1rem;font-size: .4rem;text-align: center}
.wrapper04 .scroller li a{color:#333;display:block;margin:0 .3rem}
.wrapper04 .scroller li.cur{background:#1cbb9b}
.wrapper04 .scroller li.cur a{color:#fff;}

js/jquery.min.js 引用替换就ok
https://code.jquery.com/jquery-3.2.1.min.js

js/flexible.js

/* DaTouWang URL: www.datouwang.com */
;(function(win lib) {
    var doc = win.document;
    var docEl = doc.documentElement;
    var metaEl = doc.querySelector('meta[name="viewport"]');
    var flexibleEl = doc.querySelector('meta[name="flexible"]');
    var dpr = 0;
    var scale = 0;
    var tid;
    var flexible = lib.flexible || (lib.flexible = {});

    if (metaEl) {
        console.warn('将根据已有的meta标签来设置缩放比例');
        var match = metaEl.getAttribute('content').match(/initial-scale=([d.]+)/);
        if (match) {
            scale = parseFloat(match[1]);
            dpr = parseInt(1 / scale);
        }
    } else if (flexibleEl) {
        var content = flexibleEl.getAttribute('content');
        if (content) {
            var initialDpr = content.match(/initial-dpr=([d.]+)/);
            var maximumDpr = content.match(/maximum-dpr=([d.]+)/);
            if (initialDpr) {
                dpr = parseFloat(initialDpr[1]);
                scale = parseFloat((1 / dpr).toFixed(2));    
            }
            if (maximumDpr) {
                dpr = parseFloat(maximumDpr[1]);
                scale = parseFloat((1 / dpr).toFixed(2));    
            }
        }
    }

    if (!dpr && !scale) {
        var isAndroid = win.navigator.appVersion.match(/android/gi);
        var isIPhone = win.navigator.appVersion.match(/iphone/gi);
        var devicePixelRatio = win.devicePixelRatio;
        if (isIPhone) {
            // iOS下,对于2和3的屏,用2倍的方案,其余的用1倍方案
            if (devicePixelRatio >= 3 && (!dpr || dpr >= 3)) {                
                dpr = 3;
            } else if (devicePixelRatio >= 2 && (!dpr || dpr >= 2)){
                dpr = 2;
            } else {
                dpr = 1;
            }
        } else {
            // 其他设备下,仍旧使用1倍的方案
            dpr = 1;
        }
        scale = 1 / dpr;
    }

    docEl.setAttribute('data-dpr' dpr);
    if (!metaEl) {
        metaEl = doc.createElement('meta');
        metaEl.setAttribute('name' 'viewport');
        metaEl.setAttribute('content' 'initial-scale=' + scale + ' maximum-scale=' + scale + ' minimum-scale=' + scale + ' user-scalable=no');
        if (docEl.firstElementChild) {
            docEl.firstElementChild.appendChild(metaEl);
        } else {
            var wrap = doc.createElement('div');
            wrap.appendChild(metaEl);
            doc.write(wrap.innerHTML);
        }
    }

    function refreshRem(){
        var width = docEl.getBoundingClientRect().width;
        if (width / dpr > 768) {
            width = 768 * dpr;
        }
        var rem = width / 10;
        docEl.style.fontSize = rem + 'px';
        flexible.rem = win.rem = rem;
    }

    win.addEventListener('resize' function() {
        clearTimeout(tid);
        tid = setTimeout(refreshRem 300);
    } false);
    win.addEventListener('pageshow' function(e) {
        if (e.persisted) {
            clearTimeout(tid);
            tid = setTimeout(refreshRem 300);
        }
    } false);

    if (doc.readyState === 'complete') {
        doc.body.style.fontSize = 12 * dpr + 'px';
    } else {
        doc.addEventListener('DOMContentLoaded' function(e) {
            doc.body.style.fontSize = 12 * dpr + 'px';
        } false);
    }


    refreshRem();

    flexible.dpr = win.dpr = dpr;
    flexible.refreshRem = refreshRem;
    flexible.rem2px = function(d) {
        var val = parseFloat(d) * this.rem;
        if (typeof d === 'string' && d.match(/rem$/)) {
            val += 'px';
        }
        return val;
    }
    flexible.px2rem = function(d) {
        var val = parseFloat(d) / this.rem;
        if (typeof d === 'string' && d.match(/px$/)) {
            val += 'rem';
        }
        return val;
    }

})(window window['lib'] || (window['lib'] = {}));

js/iscroll.js

/* DaTouWang URL: www.datouwang.com */
(function (window document Math) {
var rAF = window.requestAnimationFrame    ||
    window.webkitRequestAnimationFrame    ||
    window.mozRequestAnimationFrame        ||
    window.oRequestAnimationFrame        ||
    window.msRequestAnimationFrame        ||
    function (callback) { window.setTimeout(callback 1000 / 60); };

var utils = (function () {
    var me = {};

    var _elementStyle = document.createElement('div').style;
    var _vendor = (function () {
        var vendors = ['t' 'webkitT' 'MozT' 'msT' 'OT']
            transform
            i = 0
            l = vendors.length;

        for ( ; i < l; i++ ) {
            transform = vendors[i] + 'ransform';
            if ( transform in _elementStyle ) return vendors[i].substr(0 vendors[i].length-1);
        }

        return false;
    })();

    function _prefixStyle (style) {
        if ( _vendor === false ) return false;
        if ( _vendor === '' ) return style;
        return _vendor + style.charAt(0).toUpperCase() + style.substr(1);
    }

    me.getTime = Date.now || function getTime () { return new Date().getTime(); };

    me.extend = function (target obj) {
        for ( var i in obj ) {
            target[i] = obj[i];
        }
    };

    me.addEvent = function (el type fn capture) {
        el.addEventListener(type fn !!capture);
    };

    me.removeEvent = function (el type fn capture) {
        el.removeEventListener(type fn !!capture);
    };

    me.prefixPointerEvent = function (pointerEvent) {
        return window.MSPointerEvent ?
            'MSPointer' + pointerEvent.charAt(7).toUpperCase() + pointerEvent.substr(8):
            pointerEvent;
    };

    me.momentum = function (current start time lowerMargin wrapperSize deceleration) {
        var distance = current - start
            speed = Math.abs(distance) / time
            destination
            duration;

        deceleration = deceleration === undefined ? 0.0006 : deceleration;

        destination = current + ( speed * speed ) / ( 2 * deceleration ) * ( distance < 0 ? -1 : 1 );
        duration = speed / deceleration;

        if ( destination < lowerMargin ) {
            destination = wrapperSize ? lowerMargin - ( wrapperSize / 2.5 * ( speed / 8 ) ) : lowerMargin;
            distance = Math.abs(destination - current);
            duration = distance / speed;
        } else if ( destination > 0 ) {
            destination = wrapperSize ? wrapperSize / 2.5 * ( speed / 8 ) : 0;
            distance = Math.abs(current) + destination;
            duration = distance / speed;
        }

        return {
            destination: Math.round(destination)
            duration: duration
        };
    };

    var _transform = _prefixStyle('transform');

    me.extend(me {
        hasTransform: _transform !== false
        hasPerspective: _prefixStyle('perspective') in _elementStyle
        hasTouch: 'ontouchstart' in window
        hasPointer: !!(window.PointerEvent || window.MSPointerEvent) // IE10 is prefixed
        hasTransition: _prefixStyle('transition') in _elementStyle
    });

    /*
    This should find all Android browsers lower than build 535.19 (both stock browser and webview)
    - galaxy S2 is ok
    - 2.3.6 : `AppleWebKit/533.1 (KHTML like Gecko) Version/4.0 Mobile Safari/533.1`
    - 4.0.4 : `AppleWebKit/534.30 (KHTML like Gecko) Version/4.0 Mobile Safari/534.30`
   - galaxy S3 is badAndroid (stock brower webview)
     `AppleWebKit/534.30 (KHTML like Gecko) Version/4.0 Mobile Safari/534.30`
   - galaxy S4 is badAndroid (stock brower webview)
     `AppleWebKit/534.30 (KHTML like Gecko) Version/4.0 Mobile Safari/534.30`
   - galaxy S5 is OK
     `AppleWebKit/537.36 (KHTML like Gecko) Version/4.0 Mobile Safari/537.36 (Chrome/)`
   - galaxy S6 is OK
     `AppleWebKit/537.36 (KHTML like Gecko) Version/4.0 Mobile Safari/537.36 (Chrome/)`
  */
    me.isBadAndroid = (function() {
        var appVersion = window.navigator.appVersion;
        // Android browser is not a chrome browser.
        if (/Android/.test(appVersion) && !(/Chrome/d/.test(appVersion))) {
            var safariVersion = appVersion.match(/Safari/(d+.d)/);
            if(safariVersion && typeof safariVersion === "object" && safariVersion.length >= 2) {
                return parseFloat(safariVersion[1]) < 535.19;
            } else {
                return true;
            }
        } else {
            return false;
        }
    })();

    me.extend(me.style = {} {
        transform: _transform
        transitionTimingFunction: _prefixStyle('transitionTimingFunction')
        transitionDuration: _prefixStyle('transitionDuration')
        transitionDelay: _prefixStyle('transitionDelay')
        transformOrigin: _prefixStyle('transformOrigin')
    });

    me.hasClass = function (e c) {
        var re = new RegExp("(^|s)" + c + "(s|$)");
        return re.test(e.className);
    };

    me.addClass = function (e c) {
        if ( me.hasClass(e c) ) {
            return;
        }

        var newclass = e.className.split(' ');
        newclass.push(c);
        e.className = newclass.join(' ');
    };

    me.removeClass = function (e c) {
        if ( !me.hasClass(e c) ) {
            return;
        }

        var re = new RegExp("(^|s)" + c + "(s|$)" 'g');
        e.className = e.className.replace(re ' ');
    };

    me.offset = function (el) {
        var left = -el.offsetLeft
            top = -el.offsetTop;

        // jshint -W084
        while (el = el.offsetParent) {
            left -= el.offsetLeft;
            top -= el.offsetTop;
        }
        // jshint +W084

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

    me.preventDefaultException = function (el exceptions) {
        for ( var i in exceptions ) {
            if ( exceptions[i].test(el[i]) ) {
                return true;
            }
        }

        return false;
    };

    me.extend(me.eventType = {} {
        touchstart: 1
        touchmove: 1
        touchend: 1

        mousedown: 2
        mousemove: 2
        mouseup: 2

        pointerdown: 3
        pointermove: 3
        pointerup: 3

        MSPointerDown: 3
        MSPointerMove: 3
        MSPointerUp: 3
    });

    me.extend(me.ease = {} {
        quadratic: {
            style: 'cubic-bezier(0.25 0.46 0.45 0.94)'
            fn: function (k) {
                return k * ( 2 - k );
            }
        }
        circular: {
            style: 'cubic-bezier(0.1 0.57 0.1 1)'    // Not properly "circular" but this looks better it should be (0.075 0.82 0.165 1)
            fn: function (k) {
                return Math.sqrt( 1 - ( --k * k ) );
            }
        }
        back: {
            style: 'cubic-bezier(0.175 0.885 0.32 1.275)'
            fn: function (k) {
                var b = 4;
                return ( k = k - 1 ) * k * ( ( b + 1 ) * k + b ) + 1;
            }
        }
        bounce: {
            style: ''
            fn: function (k) {
                if ( ( k /= 1 ) < ( 1 / 2.75 ) ) {
                    return 7.5625 * k * k;
                } else if ( k < ( 2 / 2.75 ) ) {
                    return 7.5625 * ( k -= ( 1.5 / 2.75 ) ) * k + 0.75;
                } else if ( k < ( 2.5 / 2.75 ) ) {
                    return 7.5625 * ( k -= ( 2.25 / 2.75 ) ) * k + 0.9375;
                } else {
                    return 7.5625 * ( k -= ( 2.625 / 2.75 ) ) * k + 0.984375;
                }
            }
        }
        elastic: {
            style: ''
            fn: function (k) {
                var f = 0.22
                    e = 0.4;

                if ( k === 0 ) { return 0; }
                if ( k == 1 ) { return 1; }

                return ( e * Math.pow( 2 - 10 * k ) * Math.sin( ( k - f / 4 ) * ( 2 * Math.PI ) / f ) + 1 );
            }
        }
    });

    me.tap = function (e eventName) {
        var ev = document.createEvent('Event');
        ev.initEvent(eventName true true);
        ev.pageX = e.pageX;
        ev.pageY = e.pageY;
        e.target.dispatchEvent(ev);
    };

    me.click = function (e) {
        var target = e.target
            ev;

        if ( !(/(SELECT|INPUT|TEXTAREA)/i).test(target.tagName) ) {
            // https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/initMouseEvent
            // initMouseEvent is deprecated.
            ev = document.createEvent(window.MouseEvent ? 'MouseEvents' : 'Event');
            ev.initEvent('click' true true);
            ev.view = e.view || window;
            ev.detail = 1;
            ev.screenX = target.screenX || 0;
            ev.screenY = target.screenY || 0;
            ev.clientX = target.clientX || 0;
            ev.clientY = target.clientY || 0;
            ev.ctrlKey = !!e.ctrlKey;
            ev.altKey = !!e.altKey;
            ev.shiftKey = !!e.shiftKey;
            ev.metaKey = !!e.metaKey;
            ev.button = 0;
            ev.relatedTarget = null;
            ev._constructed = true;
            target.dispatchEvent(ev);
        }
    };

    return me;
})();
function IScroll (el options) {
    this.wrapper = typeof el == 'string' ? document.querySelector(el) : el;
    this.scroller = this.wrapper.children[0];
    this.scrollerStyle = this.scroller.style;        // cache style for better performance

    this.options = {

        resizeScrollbars: true

        mouseWheelSpeed: 20

        snapThreshold: 0.334

// INSERT POINT: OPTIONS
        disablePointer : !utils.hasPointer
        disableTouch : utils.hasPointer || !utils.hasTouch
        disableMouse : utils.hasPointer || utils.hasTouch
        startX: 0
        startY: 0
        scrollY: true
        directionLockThreshold: 5
        momentum: true

        bounce: true
        bounceTime: 600
        bounceEasing: ''

        preventDefault: true
        preventDefaultException: { tagName: /^(INPUT|TEXTAREA|BUTTON|SELECT)$/ }

        HWCompositing: true
        useTransition: true
        useTransform: true
        bindToWrapper: typeof window.onmousedown === "undefined"
    };

    for ( var i in options ) {
        this.options[i] = options[i];
    }

    // Normalize options
    this.translateZ = this.options.HWCompositing && utils.hasPerspective ? ' translateZ(0)' : '';

    this.options.useTransition = utils.hasTransition && this.options.useTransition;
    this.options.useTransform = utils.hasTransform && this.options.useTransform;

    this.options.eventPassthrough = this.options.eventPassthrough === true ? 'vertical' : this.options.eventPassthrough;
    this.options.preventDefault = !this.options.eventPassthrough && this.options.preventDefault;

    // If you want eventPassthrough I have to lock one of the axes
    this.options.scrollY = this.options.eventPassthrough == 'vertical' ? false : this.options.scrollY;
    this.options.scrollX = this.options.eventPassthrough == 'horizontal' ? false : this.options.scrollX;

    // With eventPassthrough we also need lockDirection mechanism
    this.options.freeScroll = this.options.freeScroll && !this.options.eventPassthrough;
    this.options.directionLockThreshold = this.options.eventPassthrough ? 0 : this.options.directionLockThreshold;

    this.options.bounceEasing = typeof this.options.bounceEasing == 'string' ? utils.ease[this.options.bounceEasing] || utils.ease.circular : this.options.bounceEasing;

    this.options.resizePolling = this.options.resizePolling === undefined ? 60 : this.options.resizePolling;

    if ( this.options.tap === true ) {
        this.options.tap = 'tap';
    }

    // https://github.com/cubiq/iscroll/issues/1029
    if (!this.options.useTransition && !this.options.useTransform) {
        if(!(/relative|absolute/i).test(this.scrollerStyle.position)) {
            this.scrollerStyle.position = "relative";
        }
    }

    if ( this.options.shrinkScrollbars == 'scale' ) {
        this.options.useTransition = false;
    }

    this.options.invertWheelDirection = this.options.invertWheelDirection ? -1 : 1;

// INSERT POINT: NORMALIZATION

    // Some defaults
    this.x = 0;
    this.y = 0;
    this.directionX = 0;
    this.directionY = 0;
    this._events = {};

// INSERT POINT: DEFAULTS

    this._init();
    this.refresh();

    this.scrollTo(this.options.startX this.options.startY);
    this.enable();
}

IScroll.prototype = {
    version: '5.2.0'

    _init: function () {
        this._initEvents();

        if ( this.options.scrollbars || this.options.indicators ) {
            this._initIndicators();
        }

        if ( this.options.mouseWheel ) {
            this._initWheel();
        }

        if ( this.options.snap ) {
            this._initSnap();
        }

        if ( this.options.keyBindings ) {
            this._initKeys();
        }

// INSERT POINT: _init

    }

    destroy: function () {
        this._initEvents(true);
        clearTimeout(this.resizeTimeout);
         this.resizeTimeout = null;
        this._execEvent('destroy');
    }

    _transitionEnd: function (e) {
        if ( e.target != this.scroller || !this.isInTransition ) {
            return;
        }

        this._transitionTime();
        if ( !this.resetPosition(this.options.bounceTime) ) {
            this.isInTransition = false;
            this._execEvent('scrollEnd');
        }
    }

    _start: function (e) {
        // React to left mouse button only
        if ( utils.eventType[e.type] != 1 ) {
          // for button property
          // http://unixpapa.com/js/mouse.html
          var button;
        if (!e.which) {
          /* IE case */
          button = (e.button < 2) ? 0 :
                   ((e.button == 4) ? 1 : 2);
        } else {
          /* All others */
          button = e.button;
        }
            if ( button !== 0 ) {
                return;
            }
        }

        if ( !this.enabled || (this.initiated && utils.eventType[e.type] !== this.initiated) ) {
            return;
        }

        if ( this.options.preventDefault && !utils.isBadAndroid && !utils.preventDefaultException(e.target this.options.preventDefaultException) ) {
            e.preventDefault();
        }

        var point = e.touches ? e.touches[0] : e
            pos;

        this.initiated    = utils.eventType[e.type];
        this.moved        = false;
        this.distX        = 0;
        this.distY        = 0;
        this.directionX = 0;
        this.directionY = 0;
        this.directionLocked = 0;

        this.startTime = utils.getTime();

        if ( this.options.useTransition && this.isInTransition ) {
            this._transitionTime();
            this.isInTransition = false;
            pos = this.getComputedPosition();
            this._translate(Math.round(pos.x) Math.round(pos.y));
            this._execEvent('scrollEnd');
        } else if ( !this.options.useTransition && this.isAnimating ) {
            this.isAnimating = false;
            this._execEvent('scrollEnd');
        }

        this.startX    = this.x;
        this.startY    = this.y;
        this.absStartX = this.x;
        this.absStartY = this.y;
        this.pointX    = point.pageX;
        this.pointY    = point.pageY;

        this._execEvent('beforeScrollStart');
    }

    _move: function (e) {
        if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
            return;
        }

        if ( this.options.preventDefault ) {    // increases performance on Android? TODO: check!
            e.preventDefault();
        }

        var point        = e.touches ? e.touches[0] : e
            deltaX        = point.pageX - this.pointX
            deltaY        = point.pageY - this.pointY
            timestamp    = utils.getTime()
            newX newY
            absDistX absDistY;

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

        this.distX        += deltaX;
        this.distY        += deltaY;
        absDistX        = Math.abs(this.distX);
        absDistY        = Math.abs(this.distY);

        // We need to move at least 10 pixels for the scrolling to initiate
        if ( timestamp - this.endTime > 300 && (absDistX < 10 && absDistY < 10) ) {
            return;
        }

        // If you are scrolling in one direction lock the other
        if ( !this.directionLocked && !this.options.freeScroll ) {
            if ( absDistX > absDistY + this.options.directionLockThreshold ) {
                this.directionLocked = 'h';        // lock horizontally
            } else if ( absDistY >= absDistX + this.options.directionLockThreshold ) {
                this.directionLocked = 'v';        // lock vertically
            } else {
                this.directionLocked = 'n';        // no lock
            }
        }

        if ( this.directionLocked == 'h' ) {
            if ( this.options.eventPassthrough == 'vertical' ) {
                e.preventDefault();
            } else if ( this.options.eventPassthrough == 'horizontal' ) {
                this.initiated = false;
                return;
            }

            deltaY = 0;
        } else if ( this.directionLocked == 'v' ) {
            if ( this.options.eventPassthrough == 'horizontal' ) {
                e.preventDefault();
            } else if ( this.options.eventPassthrough == 'vertical' ) {
                this.initiated = false;
                return;
            }

            deltaX = 0;
        }

        deltaX = this.hasHorizontalScroll ? deltaX : 0;
        deltaY = this.hasVerticalScroll ? deltaY : 0;

        newX = this.x + deltaX;
        newY = this.y + deltaY;

        // Slow down if outside of the boundaries
        if ( newX > 0 || newX < this.maxScrollX ) {
            newX = this.options.bounce ? this.x + deltaX / 3 : newX > 0 ? 0 : this.maxScrollX;
        }
        if ( newY > 0 || newY < this.maxScrollY ) {
            newY = this.options.bounce ? this.y + deltaY / 3 : newY > 0 ? 0 : this.maxScrollY;
        }

        this.directionX = deltaX > 0 ? -1 : deltaX < 0 ? 1 : 0;
        this.directionY = deltaY > 0 ? -1 : deltaY < 0 ? 1 : 0;

        if ( !this.moved ) {
            this._execEvent('scrollStart');
        }

        this.moved = true;

        this._translate(newX newY);

/* REPLACE START: _move */

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

/* REPLACE END: _move */

    }

    _end: function (e) {
        if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
            return;
        }

        if ( this.options.preventDefault && !utils.preventDefaultException(e.target this.options.preventDefaultException) ) {
            e.preventDefault();
        }

        var point = e.changedTouches ? e.changedTouches[0] : e
            momentumX
            momentumY
            duration = utils.getTime() - this.startTime
            newX = Math.round(this.x)
            newY = Math.round(this.y)
            distanceX = Math.abs(newX - this.startX)
            distanceY = Math.abs(newY - this.startY)
            time = 0
            easing = '';

        this.isInTransition = 0;
        this.initiated = 0;
        this.endTime = utils.getTime();

        // reset if we are outside of the boundaries
        if ( this.resetPosition(this.options.bounceTime) ) {
            return;
        }

        this.scrollTo(newX newY);    // ensures that the last position is rounded

        // we scrolled less than 10 pixels
        if ( !this.moved ) {
            if ( this.options.tap ) {
                utils.tap(e this.options.tap);
            }

            if ( this.options.click ) {
                utils.click(e);
            }

            this._execEvent('scrollCancel');
            return;
        }

        if ( this._events.flick && duration < 200 && distanceX < 100 && distanceY < 100 ) {
            this._execEvent('flick');
            return;
        }

        // start momentum animation if needed
        if ( this.options.momentum && duration < 300 ) {
            momentumX = this.hasHorizontalScroll ? utils.momentum(this.x this.startX duration this.maxScrollX this.options.bounce ? this.wrapperWidth : 0 this.options.deceleration) : { destination: newX duration: 0 };
            momentumY = this.hasVerticalScroll ? utils.momentum(this.y this.startY duration this.maxScrollY this.options.bounce ? this.wrapperHeight : 0 this.options.deceleration) : { destination: newY duration: 0 };
            newX = momentumX.destination;
            newY = momentumY.destination;
            time = Math.max(momentumX.duration momentumY.duration);
            this.isInTransition = 1;
        }


        if ( this.options.snap ) {
            var snap = this._nearestSnap(newX newY);
            this.currentPage = snap;
            time = this.options.snapSpeed || Math.max(
                    Math.max(
                        Math.min(Math.abs(newX - snap.x) 1000)
                        Math.min(Math.abs(newY - snap.y) 1000)
                    ) 300);
            newX = snap.x;
            newY = snap.y;

            this.directionX = 0;
            this.directionY = 0;
            easing = this.options.bounceEasing;
        }

// INSERT POINT: _end

        if ( newX != this.x || newY != this.y ) {
            // change easing function when scroller goes out of the boundaries
            if ( newX > 0 || newX < this.maxScrollX || newY > 0 || newY < this.maxScrollY ) {
                easing = utils.ease.quadratic;
            }

            this.scrollTo(newX newY time easing);
            return;
        }

        this._execEvent('scrollEnd');
    }

    _resize: function () {
        var that = this;

        clearTimeout(this.resizeTimeout);

        this.resizeTimeout = setTimeout(function () {
            that.refresh();
        } this.options.resizePolling);
    }

    resetPosition: function (time) {
        var x = this.x
            y = this.y;

        time = time || 0;

        if ( !this.hasHorizontalScroll || this.x > 0 ) {
            x = 0;
        } else if ( this.x < this.maxScrollX ) {
            x = this.maxScrollX;
        }

        if ( !this.hasVerticalScroll || this.y > 0 ) {
            y = 0;
        } else if ( this.y < this.maxScrollY ) {
            y = this.maxScrollY;
        }

        if ( x == this.x && y == this.y ) {
            return false;
        }

        this.scrollTo(x y time this.options.bounceEasing);

        return true;
    }

    disable: function () {
        this.enabled = false;
    }

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

    refresh: function () {
        var rf = this.wrapper.offsetHeight;        // Force reflow

        this.wrapperWidth    = this.wrapper.clientWidth;
        this.wrapperHeight    = this.wrapper.clientHeight;

/* REPLACE START: refresh */

        this.scrollerWidth    = this.scroller.offsetWidth;
        this.scrollerHeight    = this.scroller.offsetHeight;

        this.maxScrollX        = this.wrapperWidth - this.scrollerWidth;
        this.maxScrollY        = this.wrapperHeight - this.scrollerHeight;

/* REPLACE END: refresh */

        this.hasHorizontalScroll    = this.options.scrollX && this.maxScrollX < 0;
        this.hasVerticalScroll        = this.options.scrollY && this.maxScrollY < 0;

        if ( !this.hasHorizontalScroll ) {
            this.maxScrollX = 0;
            this.scrollerWidth = this.wrapperWidth;
        }

        if ( !this.hasVerticalScroll ) {
            this.maxScrollY = 0;
            this.scrollerHeight = this.wrapperHeight;
        }

        this.endTime = 0;
        this.directionX = 0;
        this.directionY = 0;

        this.wrapperOffset = utils.offset(this.wrapper);

        this._execEvent('refresh');

        this.resetPosition();

// INSERT POINT: _refresh

    }

    on: function (type fn) {
        if ( !this._events[type] ) {
            this._events[type] = [];
        }

        this._events[type].push(fn);
    }

    off: function (type fn) {
        if ( !this._events[type] ) {
            return;
        }

        var index = this._events[type].indexOf(fn);

        if ( index > -1 ) {
            this._events[type].splice(index 1);
        }
    }

    _execEvent: function (type) {
        if ( !this._events[type] ) {
            return;
        }

        var i = 0
            l = this._events[type].length;

        if ( !l ) {
            return;
        }

        for ( ; i < l; i++ ) {
            this._events[type][i].apply(this [].slice.call(arguments 1));
        }
    }

    scrollBy: function (x y time easing) {
        x = this.x + x;
        y = this.y + y;
        time = time || 0;

        this.scrollTo(x y time easing);
    }

    scrollTo: function (x y time easing) {
        easing = easing || utils.ease.circular;

        this.isInTransition = this.options.useTransition && time > 0;
        var transitionType = this.options.useTransition && easing.style;
        if ( !time || transitionType ) {
                if(transitionType) {
                    this._transitionTimingFunction(easing.style);
                    this._transitionTime(time);
                }
            this._translate(x y);
        } else {
            this._animate(x y time easing.fn);
        }
    }

    scrollToElement: function (el time offsetX offsetY easing) {
        el = el.nodeType ? el : this.scroller.querySelector(el);

        if ( !el ) {
            return;
        }

        var pos = utils.offset(el);

        pos.left -= this.wrapperOffset.left;
        pos.top  -= this.wrapperOffset.top;

        // if offsetX/Y are true we center the element to the screen
        if ( offsetX === true ) {
            offsetX = Math.round(el.offsetWidth / 2 - this.wrapper.offsetWidth / 2);
        }
        if ( offsetY === true ) {
            offsetY = Math.round(el.offsetHeight / 2 - this.wrapper.offsetHeight / 2);
        }

        pos.left -= offsetX || 0;
        pos.top  -= offsetY || 0;

        pos.left = pos.left > 0 ? 0 : pos.left < this.maxScrollX ? this.maxScrollX : pos.left;
        pos.top  = pos.top  > 0 ? 0 : pos.top  < this.maxScrollY ? this.maxScrollY : pos.top;

        time = time === undefined || time === null || time === 'auto' ? Math.max(Math.abs(this.x-pos.left) Math.abs(this.y-pos.top)) : time;

        this.scrollTo(pos.left pos.top time easing);
    }

    _transitionTime: function (time) {
        if (!this.options.useTransition) {
            return;
        }
        time = time || 0;
        var durationProp = utils.style.transitionDuration;
        if(!durationProp) {
            return;
        }

        this.scrollerStyle[durationProp] = time + 'ms';

        if ( !time && utils.isBadAndroid ) {
            this.scrollerStyle[durationProp] = '0.0001ms';
            // remove 0.0001ms
            var self = this;
            rAF(function() {
                if(self.scrollerStyle[durationProp] === '0.0001ms') {
                    self.scrollerStyle[durationProp] = '0s';
                }
            });
        }


        if ( this.indicators ) {
            for ( var i = this.indicators.length; i--; ) {
                this.indicators[i].transitionTime(time);
            }
        }


// INSERT POINT: _transitionTime

    }

    _transitionTimingFunction: function (easing) {
        this.scrollerStyle[utils.style.transitionTimingFunction] = easing;


        if ( this.indicators ) {
            for ( var i = this.indicators.length; i--; ) {
                this.indicators[i].transitionTimingFunction(easing);
            }
        }


// INSERT POINT: _transitionTimingFunction

    }

    _translate: function (x y) {
        if ( this.options.useTransform ) {

/* REPLACE START: _translate */

            this.scrollerStyle[utils.style.transform] = 'translate(' + x + 'px' + y + 'px)' + this.translateZ;

/* REPLACE END: _translate */

        } else {
            x = Math.round(x);
            y = Math.round(y);
            this.scrollerStyle.left = x + 'px';
            this.scrollerStyle.top = y + 'px';
        }

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


    if ( this.indicators ) {
        for ( var i = this.indicators.length; i--; ) {
            this.indicators[i].updatePosition();
        }
    }


// INSERT POINT: _translate

    }

    _initEvents: function (remove) {
        var eventType = remove ? utils.removeEvent : utils.addEvent
            target = this.options.bindToWrapper ? this.wrapper : window;

        eventType(window 'orientationchange' this);
        eventType(window 'resize' this);

        if ( this.options.click ) {
            eventType(this.wrapper 'click' this true);
        }

        if ( !this.options.disableMouse ) {
            eventType(this.wrapper 'mousedown' this);
            eventType(target 'mousemove' this);
            eventType(target 'mousecancel' this);
            eventType(target 'mouseup' this);
        }

        if ( utils.hasPointer && !this.options.disablePointer ) {
            eventType(this.wrapper utils.prefixPointerEvent('pointerdown') this);
            eventType(target utils.prefixPointerEvent('pointermove') this);
            eventType(target utils.prefixPointerEvent('pointercancel') this);
            eventType(target utils.prefixPointerEvent('pointerup') this);
        }

        if ( utils.hasTouch && !this.options.disableTouch ) {
            eventType(this.wrapper 'touchstart' this);
            eventType(target 'touchmove' this);
            eventType(target 'touchcancel' this);
            eventType(target 'touchend' this);
        }

        eventType(this.scroller 'transitionend' this);
        eventType(this.scroller 'webkitTransitionEnd' this);
        eventType(this.scroller 'oTransitionEnd' this);
        eventType(this.scroller 'MSTransitionEnd' this);
    }

    getComputedPosition: function () {
        var matrix = window.getComputedStyle(this.scroller null)
            x y;

        if ( this.options.useTransform ) {
            matrix = matrix[utils.style.transform].split(')')[0].split(' ');
            x = +(matrix[12] || matrix[4]);
            y = +(matrix[13] || matrix[5]);
        } else {
            x = +matrix.left.replace(/[^-d.]/g '');
            y = +matrix.top.replace(/[^-d.]/g '');
        }

        return { x: x y: y };
    }
    _initIndicators: function () {
        var interactive = this.options.interactiveScrollbars
            customStyle = typeof this.options.scrollbars != 'string'
            indicators = []
            indicator;

        var that = this;

        this.indicators = [];

        if ( this.options.scrollbars ) {
            // Vertical scrollbar
            if ( this.options.scrollY ) {
                indicator = {
                    el: createDefaultScrollbar('v' interactive this.options.scrollbars)
                    interactive: interactive
                    defaultScrollbars: true
                    customStyle: customStyle
                    resize: this.options.resizeScrollbars
                    shrink: this.options.shrinkScrollbars
                    fade: this.options.fadeScrollbars
                    listenX: false
                };

                this.wrapper.appendChild(indicator.el);
                indicators.push(indicator);
            }

            // Horizontal scrollbar
            if ( this.options.scrollX ) {
                indicator = {
                    el: createDefaultScrollbar('h' interactive this.options.scrollbars)
                    interactive: interactive
                    defaultScrollbars: true
                    customStyle: customStyle
                    resize: this.options.resizeScrollbars
                    shrink: this.options.shrinkScrollbars
                    fade: this.options.fadeScrollbars
                    listenY: false
                };

                this.wrapper.appendChild(indicator.el);
                indicators.push(indicator);
            }
        }

        if ( this.options.indicators ) {
            // TODO: check concat compatibility
            indicators = indicators.concat(this.options.indicators);
        }

        for ( var i = indicators.length; i--; ) {
            this.indicators.push( new Indicator(this indicators[i]) );
        }

        // TODO: check if we can use array.map (wide compatibility and performance issues)
        function _indicatorsMap (fn) {
            if (that.indicators) {
                for ( var i = that.indicators.length; i--; ) {
                    fn.call(that.indicators[i]);
                }
            }
        }

        if ( this.options.fadeScrollbars ) {
            this.on('scrollEnd' function () {
                _indicatorsMap(function () {
                    this.fade();
                });
            });

            this.on('scrollCancel' function () {
                _indicatorsMap(function () {
                    this.fade();
                });
            });

            this.on('scrollStart' function () {
                _indicatorsMap(function () {
                    this.fade(1);
                });
            });

            this.on('beforeScrollStart' function () {
                _indicatorsMap(function () {
                    this.fade(1 true);
                });
            });
        }


        this.on('refresh' function () {
            _indicatorsMap(function () {
                this.refresh();
            });
        });

        this.on('destroy' function () {
            _indicatorsMap(function () {
                this.destroy();
            });

            delete this.indicators;
        });
    }

    _initWheel: function () {
        utils.addEvent(this.wrapper 'wheel' this);
        utils.addEvent(this.wrapper 'mousewheel' this);
        utils.addEvent(this.wrapper 'DOMMouseScroll' this);

        this.on('destroy' function () {
            clearTimeout(this.wheelTimeout);
            this.wheelTimeout = null;
            utils.removeEvent(this.wrapper 'wheel' this);
            utils.removeEvent(this.wrapper 'mousewheel' this);
            utils.removeEvent(this.wrapper 'DOMMouseScroll' this);
        });
    }

    _wheel: function (e) {
        if ( !this.enabled ) {
            return;
        }

        e.preventDefault();

        var wheelDeltaX wheelDeltaY
            newX newY
            that = this;

        if ( this.wheelTimeout === undefined ) {
            that._execEvent('scrollStart');
        }

        // Execute the scrollEnd event after 400ms the wheel stopped scrolling
        clearTimeout(this.wheelTimeout);
        this.wheelTimeout = setTimeout(function () {
            if(!that.options.snap) {
                that._execEvent('scrollEnd');
            }
            that.wheelTimeout = undefined;
        } 400);

        if ( 'deltaX' in e ) {
            if (e.deltaMode === 1) {
                wheelDeltaX = -e.deltaX * this.options.mouseWheelSpeed;
                wheelDeltaY = -e.deltaY * this.options.mouseWheelSpeed;
            } else {
                wheelDeltaX = -e.deltaX;
                wheelDeltaY = -e.deltaY;
            }
        } else if ( 'wheelDeltaX' in e ) {
            wheelDeltaX = e.wheelDeltaX / 120 * this.options.mouseWheelSpeed;
            wheelDeltaY = e.wheelDeltaY / 120 * this.options.mouseWheelSpeed;
        } else if ( 'wheelDelta' in e ) {
            wheelDeltaX = wheelDeltaY = e.wheelDelta / 120 * this.options.mouseWheelSpeed;
        } else if ( 'detail' in e ) {
            wheelDeltaX = wheelDeltaY = -e.detail / 3 * this.options.mouseWheelSpeed;
        } else {
            return;
        }

        wheelDeltaX *= this.options.invertWheelDirection;
        wheelDeltaY *= this.options.invertWheelDirection;

        if ( !this.hasVerticalScroll ) {
            wheelDeltaX = wheelDeltaY;
            wheelDeltaY = 0;
        }

        if ( this.options.snap ) {
            newX = this.currentPage.pageX;
            newY = this.currentPage.pageY;

            if ( wheelDeltaX > 0 ) {
                newX--;
            } else if ( wheelDeltaX < 0 ) {
                newX++;
            }

            if ( wheelDeltaY > 0 ) {
                newY--;
            } else if ( wheelDeltaY < 0 ) {
                newY++;
            }

            this.goToPage(newX newY);

            return;
        }

        newX = this.x + Math.round(this.hasHorizontalScroll ? wheelDeltaX : 0);
        newY = this.y + Math.round(this.hasVerticalScroll ? wheelDeltaY : 0);

        this.directionX = wheelDeltaX > 0 ? -1 : wheelDeltaX < 0 ? 1 : 0;
        this.directionY = wheelDeltaY > 0 ? -1 : wheelDeltaY < 0 ? 1 : 0;

        if ( newX > 0 ) {
            newX = 0;
        } else if ( newX < this.maxScrollX ) {
            newX = this.maxScrollX;
        }

        if ( newY > 0 ) {
            newY = 0;
        } else if ( newY < this.maxScrollY ) {
            newY = this.maxScrollY;
        }

        this.scrollTo(newX newY 0);

// INSERT POINT: _wheel
    }

    _initSnap: function () {
        this.currentPage = {};

        if ( typeof this.options.snap == 'string' ) {
            this.options.snap = this.scroller.querySelectorAll(this.options.snap);
        }

        this.on('refresh' function () {
            var i = 0 l
                m = 0 n
                cx cy
                x = 0 y
                stepX = this.options.snapStepX || this.wrapperWidth
                stepY = this.options.snapStepY || this.wrapperHeight
                el;

            this.pages = [];

            if ( !this.wrapperWidth || !this.wrapperHeight || !this.scrollerWidth || !this.scrollerHeight ) {
                return;
            }

            if ( this.options.snap === true ) {
                cx = Math.round( stepX / 2 );
                cy = Math.round( stepY / 2 );

                while ( x > -this.scrollerWidth ) {
                    this.pages[i] = [];
                    l = 0;
                    y = 0;

                    while ( y > -this.scrollerHeight ) {
                        this.pages[i][l] = {
                            x: Math.max(x this.maxScrollX)
                            y: Math.max(y this.maxScrollY)
                            width: stepX
                            height: stepY
                            cx: x - cx
                            cy: y - cy
                        };

                        y -= stepY;
                        l++;
                    }

                    x -= stepX;
                    i++;
                }
            } else {
                el = this.options.snap;
                l = el.length;
                n = -1;

                for ( ; i < l; i++ ) {
                    if ( i === 0 || el[i].offsetLeft <= el[i-1].offsetLeft ) {
                        m = 0;
                        n++;
                    }

                    if ( !this.pages[m] ) {
                        this.pages[m] = [];
                    }

                    x = Math.max(-el[i].offsetLeft this.maxScrollX);
                    y = Math.max(-el[i].offsetTop this.maxScrollY);
                    cx = x - Math.round(el[i].offsetWidth / 2);
                    cy = y - Math.round(el[i].offsetHeight / 2);

                    this.pages[m][n] = {
                        x: x
                        y: y
                        width: el[i].offsetWidth
                        height: el[i].offsetHeight
                        cx: cx
                        cy: cy
                    };

                    if ( x > this.maxScrollX ) {
                        m++;
                    }
                }
            }

            this.goToPage(this.currentPage.pageX || 0 this.currentPage.pageY || 0 0);

            // Update snap threshold if needed
            if ( this.options.snapThreshold % 1 === 0 ) {
                this.snapThresholdX = this.options.snapThreshold;
                this.snapThresholdY = this.options.snapThreshold;
            } else {
                this.snapThresholdX = Math.round(this.pages[this.currentPage.pageX][this.currentPage.pageY].width * this.options.snapThreshold);
                this.snapThresholdY = Math.round(this.pages[this.currentPage.pageX][this.currentPage.pageY].height * this.options.snapThreshold);
            }
        });

        this.on('flick' function () {
            var time = this.options.snapSpeed || Math.max(
                    Math.max(
                        Math.min(Math.abs(this.x - this.startX) 1000)
                        Math.min(Math.abs(this.y - this.startY) 1000)
                    ) 300);

            this.goToPage(
                this.currentPage.pageX + this.directionX
                this.currentPage.pageY + this.directionY
                time
            );
        });
    }

    _nearestSnap: function (x y) {
        if ( !this.pages.length ) {
            return { x: 0 y: 0 pageX: 0 pageY: 0 };
        }

        var i = 0
            l = this.pages.length
            m = 0;

        // Check if we exceeded the snap threshold
        if ( Math.abs(x - this.absStartX) < this.snapThresholdX &&
            Math.abs(y - this.absStartY) < this.snapThresholdY ) {
            return this.currentPage;
        }

        if ( x > 0 ) {
            x = 0;
        } else if ( x < this.maxScrollX ) {
            x = this.maxScrollX;
        }

        if ( y > 0 ) {
            y = 0;
        } else if ( y < this.maxScrollY ) {
            y = this.maxScrollY;
        }

        for ( ; i < l; i++ ) {
            if ( x >= this.pages[i][0].cx ) {
                x = this.pages[i][0].x;
                break;
            }
        }

        l = this.pages[i].length;

        for ( ; m < l; m++ ) {
            if ( y >= this.pages[0][m].cy ) {
                y = this.pages[0][m].y;
                break;
            }
        }

        if ( i == this.currentPage.pageX ) {
            i += this.directionX;

            if ( i < 0 ) {
                i = 0;
            } else if ( i >= this.pages.length ) {
                i = this.pages.length - 1;
            }

            x = this.pages[i][0].x;
        }

        if ( m == this.currentPage.pageY ) {
            m += this.directionY;

            if ( m < 0 ) {
                m = 0;
            } else if ( m >= this.pages[0].length ) {
                m = this.pages[0].length - 1;
            }

            y = this.pages[0][m].y;
        }

        return {
            x: x
            y: y
            pageX: i
            pageY: m
        };
    }

    goToPage: function (x y time easing) {
        easing = easing || this.options.bounceEasing;

        if ( x >= this.pages.length ) {
            x = this.pages.length - 1;
        } else if ( x < 0 ) {
            x = 0;
        }

        if ( y >= this.pages[x].length ) {
            y = this.pages[x].length - 1;
        } else if ( y < 0 ) {
            y = 0;
        }

        var posX = this.pages[x][y].x
            posY = this.pages[x][y].y;

        time = time === undefined ? this.options.snapSpeed || Math.max(
            Math.max(
                Math.min(Math.abs(posX - this.x) 1000)
                Math.min(Math.abs(posY - this.y) 1000)
            ) 300) : time;

        this.currentPage = {
            x: posX
            y: posY
            pageX: x
            pageY: y
        };

        this.scrollTo(posX posY time easing);
    }

    next: function (time easing) {
        var x = this.currentPage.pageX
            y = this.currentPage.pageY;

        x++;

        if ( x >= this.pages.length && this.hasVerticalScroll ) {
            x = 0;
            y++;
        }

        this.goToPage(x y time easing);
    }

    prev: function (time easing) {
        var x = this.currentPage.pageX
            y = this.currentPage.pageY;

        x--;

        if ( x < 0 && this.hasVerticalScroll ) {
            x = 0;
            y--;
        }

        this.goToPage(x y time easing);
    }

    _initKeys: function (e) {
        // default key bindings
        var keys = {
            pageUp: 33
            pageDown: 34
            end: 35
            home: 36
            left: 37
            up: 38
            right: 39
            down: 40
        };
        var i;

        // if you give me characters I give you keycode
        if ( typeof this.options.keyBindings == 'object' ) {
            for ( i in this.options.keyBindings ) {
                if ( typeof this.options.keyBindings[i] == 'string' ) {
                    this.options.keyBindings[i] = this.options.keyBindings[i].toUpperCase().charCodeAt(0);
                }
            }
        } else {
            this.options.keyBindings = {};
        }

        for ( i in keys ) {
            this.options.keyBindings[i] = this.options.keyBindings[i] || keys[i];
        }

        utils.addEvent(window 'keydown' this);

        this.on('destroy' function () {
            utils.removeEvent(window 'keydown' this);
        });
    }

    _key: function (e) {
        if ( !this.enabled ) {
            return;
        }

        var snap = this.options.snap    // we are using this alot better to cache it
            newX = snap ? this.currentPage.pageX : this.x
            newY = snap ? this.currentPage.pageY : this.y
            now = utils.getTime()
            prevTime = this.keyTime || 0
            acceleration = 0.250
            pos;

        if ( this.options.useTransition && this.isInTransition ) {
            pos = this.getComputedPosition();

            this._translate(Math.round(pos.x) Math.round(pos.y));
            this.isInTransition = false;
        }

        this.keyAcceleration = now - prevTime < 200 ? Math.min(this.keyAcceleration + acceleration 50) : 0;

        switch ( e.keyCode ) {
            case this.options.keyBindings.pageUp:
                if ( this.hasHorizontalScroll && !this.hasVerticalScroll ) {
                    newX += snap ? 1 : this.wrapperWidth;
                } else {
                    newY += snap ? 1 : this.wrapperHeight;
                }
                break;
            case this.options.keyBindings.pageDown:
                if ( this.hasHorizontalScroll && !this.hasVerticalScroll ) {
                    newX -= snap ? 1 : this.wrapperWidth;
                } else {
                    newY -= snap ? 1 : this.wrapperHeight;
                }
                break;
            case this.options.keyBindings.end:
                newX = snap ? this.pages.length-1 : this.maxScrollX;
                newY = snap ? this.pages[0].length-1 : this.maxScrollY;
                break;
            case this.options.keyBindings.home:
                newX = 0;
                newY = 0;
                break;
            case this.options.keyBindings.left:
                newX += snap ? -1 : 5 + this.keyAcceleration>>0;
                break;
            case this.options.keyBindings.up:
                newY += snap ? 1 : 5 + this.keyAcceleration>>0;
                break;
            case this.options.keyBindings.right:
                newX -= snap ? -1 : 5 + this.keyAcceleration>>0;
                break;
            case this.options.keyBindings.down:
                newY -= snap ? 1 : 5 + this.keyAcceleration>>0;
                break;
            default:
                return;
        }

        if ( snap ) {
            this.goToPage(newX newY);
            return;
        }

        if ( newX > 0 ) {
            newX = 0;
            this.keyAcceleration = 0;
        } else if ( newX < this.maxScrollX ) {
            newX = this.maxScrollX;
            this.keyAcceleration = 0;
        }

        if ( newY > 0 ) {
            newY = 0;
            this.keyAcceleration = 0;
        } else if ( newY < this.maxScrollY ) {
            newY = this.maxScrollY;
            this.keyAcceleration = 0;
        }

        this.scrollTo(newX newY 0);

        this.keyTime = now;
    }

    _animate: function (destX destY duration easingFn) {
        var that = this
            startX = this.x
            startY = this.y
            startTime = utils.getTime()
            destTime = startTime + duration;

        function step () {
            var now = utils.getTime()
                newX newY
                easing;

            if ( now >= destTime ) {
                that.isAnimating = false;
                that._translate(destX destY);

                if ( !that.resetPosition(that.options.bounceTime) ) {
                    that._execEvent('scrollEnd');
                }

                return;
            }

            now = ( now - startTime ) / duration;
            easing = easingFn(now);
            newX = ( destX - startX ) * easing + startX;
            newY = ( destY - startY ) * easing + startY;
            that._translate(newX newY);

            if ( that.isAnimating ) {
                rAF(step);
            }
        }

        this.isAnimating = true;
        step();
    }
    handleEvent: function (e) {
        switch ( e.type ) {
            case 'touchstart':
            case 'pointerdown':
            case 'MSPointerDown':
            case 'mousedown':
                this._start(e);
                break;
            case 'touchmove':
            case 'pointermove':
            case 'MSPointerMove':
            case 'mousemove':
                this._move(e);
                break;
            case 'touchend':
            case 'pointerup':
            case 'MSPointerUp':
            case 'mouseup':
            case 'touchcancel':
            case 'pointercancel':
            case 'MSPointerCancel':
            case 'mousecancel':
                this._end(e);
                break;
            case 'orientationchange':
            case 'resize':
                this._resize();
                break;
            case 'transitionend':
            case 'webkitTransitionEnd':
            case 'oTransitionEnd':
            case 'MSTransitionEnd':
                this._transitionEnd(e);
                break;
            case 'wheel':
            case 'DOMMouseScroll':
            case 'mousewheel':
                this._wheel(e);
                break;
            case 'keydown':
                this._key(e);
                break;
            case 'click':
                if ( this.enabled && !e._constructed ) {
                    e.preventDefault();
                    e.stopPropagation();
                }
                break;
        }
    }
};
function createDefaultScrollbar (direction interactive type) {
    var scrollbar = document.createElement('div')
        indicator = document.createElement('div');

    if ( type === true ) {
        scrollbar.style.cssText = 'position:absolute;z-index:9999';
        indicator.style.cssText = '-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;position:absolute;background:rgba(0000.5);border:1px solid rgba(2552552550.9);border-radius:3px';
    }

    indicator.className = 'iScrollIndicator';

    if ( direction == 'h' ) {
        if ( type === true ) {
            scrollbar.style.cssText += ';height:7px;left:2px;right:2px;bottom:0';
            indicator.style.height = '100%';
        }
        scrollbar.className = 'iScrollHorizontalScrollbar';
    } else {
        if ( type === true ) {
            scrollbar.style.cssText += ';width:7px;bottom:2px;top:2px;right:1px';
            indicator.style.width = '100%';
        }
        scrollbar.className = 'iScrollVerticalScrollbar';
    }

    scrollbar.style.cssText += ';overflow:hidden';

    if ( !interactive ) {
        scrollbar.style.pointerEvents = 'none';
    }

    scrollbar.appendChild(indicator);

    return scrollbar;
}

function Indicator (scroller options) {
    this.wrapper = typeof options.el == 'string' ? document.querySelector(options.el) : options.el;
    this.wrapperStyle = this.wrapper.style;
    this.indicator = this.wrapper.children[0];
    this.indicatorStyle = this.indicator.style;
    this.scroller = scroller;

    this.options = {
        listenX: true
        listenY: true
        interactive: false
        resize: true
        defaultScrollbars: false
        shrink: false
        fade: false
        speedRatioX: 0
        speedRatioY: 0
    };

    for ( var i in options ) {
        this.options[i] = options[i];
    }

    this.sizeRatioX = 1;
    this.sizeRatioY = 1;
    this.maxPosX = 0;
    this.maxPosY = 0;

    if ( this.options.interactive ) {
        if ( !this.options.disableTouch ) {
            utils.addEvent(this.indicator 'touchstart' this);
            utils.addEvent(window 'touchend' this);
        }
        if ( !this.options.disablePointer ) {
            utils.addEvent(this.indicator utils.prefixPointerEvent('pointerdown') this);
            utils.addEvent(window utils.prefixPointerEvent('pointerup') this);
        }
        if ( !this.options.disableMouse ) {
            utils.addEvent(this.indicator 'mousedown' this);
            utils.addEvent(window 'mouseup' this);
        }
    }

    if ( this.options.fade ) {
        this.wrapperStyle[utils.style.transform] = this.scroller.translateZ;
        var durationProp = utils.style.transitionDuration;
        if(!durationProp) {
            return;
        }
        this.wrapperStyle[durationProp] = utils.isBadAndroid ? '0.0001ms' : '0ms';
        // remove 0.0001ms
        var self = this;
        if(utils.isBadAndroid) {
            rAF(function() {
                if(self.wrapperStyle[durationProp] === '0.0001ms') {
                    self.wrapperStyle[durationProp] = '0s';
                }
            });
        }
        this.wrapperStyle.opacity = '0';
    }
}

Indicator.prototype = {
    handleEvent: function (e) {
        switch ( e.type ) {
            case 'touchstart':
            case 'pointerdown':
            case 'MSPointerDown':
            case 'mousedown':
                this._start(e);
                break;
            case 'touchmove':
            case 'pointermove':
            case 'MSPointerMove':
            case 'mousemove':
                this._move(e);
                break;
            case 'touchend':
            case 'pointerup':
            case 'MSPointerUp':
            case 'mouseup':
            case 'touchcancel':
            case 'pointercancel':
            case 'MSPointerCancel':
            case 'mousecancel':
                this._end(e);
                break;
        }
    }

    destroy: function () {
        if ( this.options.fadeScrollbars ) {
            clearTimeout(this.fadeTimeout);
            this.fadeTimeout = null;
        }
        if ( this.options.interactive ) {
            utils.removeEvent(this.indicator 'touchstart' this);
            utils.removeEvent(this.indicator utils.prefixPointerEvent('pointerdown') this);
            utils.removeEvent(this.indicator 'mousedown' this);

            utils.removeEvent(window 'touchmove' this);
            utils.removeEvent(window utils.prefixPointerEvent('pointermove') this);
            utils.removeEvent(window 'mousemove' this);

            utils.removeEvent(window 'touchend' this);
            utils.removeEvent(window utils.prefixPointerEvent('pointerup') this);
            utils.removeEvent(window 'mouseup' this);
        }

        if ( this.options.defaultScrollbars ) {
            this.wrapper.parentNode.removeChild(this.wrapper);
        }
    }

    _start: function (e) {
        var point = e.touches ? e.touches[0] : e;

        e.preventDefault();
        e.stopPropagation();

        this.transitionTime();

        this.initiated = true;
        this.moved = false;
        this.lastPointX    = point.pageX;
        this.lastPointY    = point.pageY;

        this.startTime    = utils.getTime();

        if ( !this.options.disableTouch ) {
            utils.addEvent(window 'touchmove' this);
        }
        if ( !this.options.disablePointer ) {
            utils.addEvent(window utils.prefixPointerEvent('pointermove') this);
        }
        if ( !this.options.disableMouse ) {
            utils.addEvent(window 'mousemove' this);
        }

        this.scroller._execEvent('beforeScrollStart');
    }

    _move: function (e) {
        var point = e.touches ? e.touches[0] : e
            deltaX deltaY
            newX newY
            timestamp = utils.getTime();

        if ( !this.moved ) {
            this.scroller._execEvent('scrollStart');
        }

        this.moved = true;

        deltaX = point.pageX - this.lastPointX;
        this.lastPointX = point.pageX;

        deltaY = point.pageY - this.lastPointY;
        this.lastPointY = point.pageY;

        newX = this.x + deltaX;
        newY = this.y + deltaY;

        this._pos(newX newY);

// INSERT POINT: indicator._move

        e.preventDefault();
        e.stopPropagation();
    }

    _end: function (e) {
        if ( !this.initiated ) {
            return;
        }

        this.initiated = false;

        e.preventDefault();
        e.stopPropagation();

        utils.removeEvent(window 'touchmove' this);
        utils.removeEvent(window utils.prefixPointerEvent('pointermove') this);
        utils.removeEvent(window 'mousemove' this);

        if ( this.scroller.options.snap ) {
            var snap = this.scroller._nearestSnap(this.scroller.x this.scroller.y);

            var time = this.options.snapSpeed || Math.max(
                    Math.max(
                        Math.min(Math.abs(this.scroller.x - snap.x) 1000)
                        Math.min(Math.abs(this.scroller.y - snap.y) 1000)
                    ) 300);

            if ( this.scroller.x != snap.x || this.scroller.y != snap.y ) {
                this.scroller.directionX = 0;
                this.scroller.directionY = 0;
                this.scroller.currentPage = snap;
                this.scroller.scrollTo(snap.x snap.y time this.scroller.options.bounceEasing);
            }
        }

        if ( this.moved ) {
            this.scroller._execEvent('scrollEnd');
        }
    }

    transitionTime: function (time) {
        time = time || 0;
        var durationProp = utils.style.transitionDuration;
        if(!durationProp) {
            return;
        }

        this.indicatorStyle[durationProp] = time + 'ms';

        if ( !time && utils.isBadAndroid ) {
            this.indicatorStyle[durationProp] = '0.0001ms';
            // remove 0.0001ms
            var self = this;
            rAF(function() {
                if(self.indicatorStyle[durationProp] === '0.0001ms') {
                    self.indicatorStyle[durationProp] = '0s';
                }
            });
        }
    }

    transitionTimingFunction: function (easing) {
        this.indicatorStyle[utils.style.transitionTimingFunction] = easing;
    }

    refresh: function () {
        this.transitionTime();

        if ( this.options.listenX && !this.options.listenY ) {
            this.indicatorStyle.display = this.scroller.hasHorizontalScroll ? 'block' : 'none';
        } else if ( this.options.listenY && !this.options.listenX ) {
            this.indicatorStyle.display = this.scroller.hasVerticalScroll ? 'block' : 'none';
        } else {
            this.indicatorStyle.display = this.scroller.hasHorizontalScroll || this.scroller.hasVerticalScroll ? 'block' : 'none';
        }

        if ( this.scroller.hasHorizontalScroll && this.scroller.hasVerticalScroll ) {
            utils.addClass(this.wrapper 'iScrollBothScrollbars');
            utils.removeClass(this.wrapper 'iScrollLoneScrollbar');

            if ( this.options.defaultScrollbars && this.options.customStyle ) {
                if ( this.options.listenX ) {
                    this.wrapper.style.right = '8px';
                } else {
                    this.wrapper.style.bottom = '8px';
                }
            }
        } else {
            utils.removeClass(this.wrapper 'iScrollBothScrollbars');
            utils.addClass(this.wrapper 'iScrollLoneScrollbar');

            if ( this.options.defaultScrollbars && this.options.customStyle ) {
                if ( this.options.listenX ) {
                    this.wrapper.style.right = '2px';
                } else {
                    this.wrapper.style.bottom = '2px';
                }
            }
        }

        var r = this.wrapper.offsetHeight;    // force refresh

        if ( this.options.listenX ) {
            this.wrapperWidth = this.wrapper.clientWidth;
            if ( this.options.resize ) {
                this.indicatorWidth = Math.max(Math.round(this.wrapperWidth * this.wrapperWidth / (this.scroller.scrollerWidth || this.wrapperWidth || 1)) 8);
                this.indicatorStyle.width = this.indicatorWidth + 'px';
            } else {
                this.indicatorWidth = this.indicator.clientWidth;
            }

            this.maxPosX = this.wrapperWidth - this.indicatorWidth;

            if ( this.options.shrink == 'clip' ) {
                this.minBoundaryX = -this.indicatorWidth + 8;
                this.maxBoundaryX = this.wrapperWidth - 8;
            } else {
                this.minBoundaryX = 0;
                this.maxBoundaryX = this.maxPosX;
            }

            this.sizeRatioX = this.options.speedRatioX || (this.scroller.maxScrollX && (this.maxPosX / this.scroller.maxScrollX));
        }

        if ( this.options.listenY ) {
            this.wrapperHeight = this.wrapper.clientHeight;
            if ( this.options.resize ) {
                this.indicatorHeight = Math.max(Math.round(this.wrapperHeight * this.wrapperHeight / (this.scroller.scrollerHeight || this.wrapperHeight || 1)) 8);
                this.indicatorStyle.height = this.indicatorHeight + 'px';
            } else {
                this.indicatorHeight = this.indicator.clientHeight;
            }

            this.maxPosY = this.wrapperHeight - this.indicatorHeight;

            if ( this.options.shrink == 'clip' ) {
                this.minBoundaryY = -this.indicatorHeight + 8;
                this.maxBoundaryY = this.wrapperHeight - 8;
            } else {
                this.minBoundaryY = 0;
                this.maxBoundaryY = this.maxPosY;
            }

            this.maxPosY = this.wrapperHeight - this.indicatorHeight;
            this.sizeRatioY = this.options.speedRatioY || (this.scroller.maxScrollY && (this.maxPosY / this.scroller.maxScrollY));
        }

        this.updatePosition();
    }

    updatePosition: function () {
        var x = this.options.listenX && Math.round(this.sizeRatioX * this.scroller.x) || 0
            y = this.options.listenY && Math.round(this.sizeRatioY * this.scroller.y) || 0;

        if ( !this.options.ignoreBoundaries ) {
            if ( x < this.minBoundaryX ) {
                if ( this.options.shrink == 'scale' ) {
                    this.width = Math.max(this.indicatorWidth + x 8);
                    this.indicatorStyle.width = this.width + 'px';
                }
                x = this.minBoundaryX;
            } else if ( x > this.maxBoundaryX ) {
                if ( this.options.shrink == 'scale' ) {
                    this.width = Math.max(this.indicatorWidth - (x - this.maxPosX) 8);
                    this.indicatorStyle.width = this.width + 'px';
                    x = this.maxPosX + this.indicatorWidth - this.width;
                } else {
                    x = this.maxBoundaryX;
                }
            } else if ( this.options.shrink == 'scale' && this.width != this.indicatorWidth ) {
                this.width = this.indicatorWidth;
                this.indicatorStyle.width = this.width + 'px';
            }

            if ( y < this.minBoundaryY ) {
                if ( this.options.shrink == 'scale' ) {
                    this.height = Math.max(this.indicatorHeight + y * 3 8);
                    this.indicatorStyle.height = this.height + 'px';
                }
                y = this.minBoundaryY;
            } else if ( y > this.maxBoundaryY ) {
                if ( this.options.shrink == 'scale' ) {
                    this.height = Math.max(this.indicatorHeight - (y - this.maxPosY) * 3 8);
                    this.indicatorStyle.height = this.height + 'px';
                    y = this.maxPosY + this.indicatorHeight - this.height;
                } else {
                    y = this.maxBoundaryY;
                }
            } else if ( this.options.shrink == 'scale' && this.height != this.indicatorHeight ) {
                this.height = this.indicatorHeight;
                this.indicatorStyle.height = this.height + 'px';
            }
        }

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

        if ( this.scroller.options.useTransform ) {
            this.indicatorStyle[utils.style.transform] = 'translate(' + x + 'px' + y + 'px)' + this.scroller.translateZ;
        } else {
            this.indicatorStyle.left = x + 'px';
            this.indicatorStyle.top = y + 'px';
        }
    }

    _pos: function (x y) {
        if ( x < 0 ) {
            x = 0;
        } else if ( x > this.maxPosX ) {
            x = this.maxPosX;
        }

        if ( y < 0 ) {
            y = 0;
        } else if ( y > this.maxPosY ) {
            y = this.maxPosY;
        }

        x = this.options.listenX ? Math.round(x / this.sizeRatioX) : this.scroller.x;
        y = this.options.listenY ? Math.round(y / this.sizeRatioY) : this.scroller.y;

        this.scroller.scrollTo(x y);
    }

    fade: function (val hold) {
        if ( hold && !this.visible ) {
            return;
        }

        clearTimeout(this.fadeTimeout);
        this.fadeTimeout = null;

        var time = val ? 250 : 500
            delay = val ? 0 : 300;

        val = val ? '1' : '0';

        this.wrapperStyle[utils.style.transitionDuration] = time + 'ms';

        this.fadeTimeout = setTimeout((function (val) {
            this.wrapperStyle.opacity = val;
            this.visible = +val;
        }).bind(this val) delay);
    }
};

IScroll.utils = utils;

if ( typeof module != 'undefined' && module.exports ) {
    module.exports = IScroll;
} else if ( typeof define == 'function' && define.amd ) {
        define( function () { return IScroll; } );
} else {
    window.IScroll = IScroll;
}

})(window document Math);

js/navbarscroll.js

/*
 * 移动端模拟导航可点击自动滑动 0.1.4
 * Date: 2017-01-11
 * by: xiewei
 * 导航可左右滑动,可点击边缘的一个,自动滚动下一个到可视范围【依赖于iscroll.js】
 *//* DaTouWang URL: www.datouwang.com */
(function ($) {
    $.fn.navbarscroll = function (options) {
        //各种属性、参数
        var _defaults = {
            className:'cur' //当前选中点击元素的class类名
            clickScrollTime:300 //点击后滑动时间
            duibiScreenWidth:0.4 //单位以rem为准,默认为0.4rem
            scrollerWidth:3 //单位以px为准,默认为3[仅用于特殊情况:外层宽度因为小数点造成的不精准情况]
            defaultSelect:0 //初始选中第n个,默认第0个
            fingerClick:0 //目标第0或1个选项触发必须每一项长度一致,方可用此项
            endClickScroll:function(thisObj){}//回调函数
        }
        var _opt = $.extend(_defaults options);
        this.each(function () {
            //插件实现代码
            var _wrapper = $(this);
            var _win = $(window);
            var _win_width = _win.width()_wrapper_width = _wrapper.width()_wrapper_off_left = _wrapper.offset().left;
            var _wrapper_off_right=_win_width-_wrapper_off_left-_wrapper_width;
            var _obj_scroller = _wrapper.children('.scroller');
            var _obj_ul = _obj_scroller.children('ul');
            var _obj_li = _obj_ul.children('li');
            var _scroller_w = 0;
            _obj_li.css({"margin-left":"0""margin-right":"0"});
            for (var i = 0; i < _obj_li.length; i++) {
                _scroller_w += _obj_li[i].offsetWidth;
            }
            _obj_scroller.width(_scroller_w+_opt.scrollerWidth);
            var myScroll = new IScroll('#'+_wrapper.attr('id') {
                eventPassthrough: true
                scrollX: true
                scrollY: false
                preventDefault: false
            });
            _init(_obj_li.eq(_opt.defaultSelect));
            _obj_li.click(function(){
                _init($(this));
            });
            //解决PC端谷歌浏览器模拟的手机屏幕出现莫名的卡顿现象,滑动时禁止默认事件(2017-01-11)
            _wrapper[0].addEventListener('touchmove'function (e){e.preventDefault();}false);
            function _init(thiObj){
                var $this_obj=thiObj;
                var duibi=_opt.duibiScreenWidth*_win_width/10this_index=$this_obj.index()this_off_left=$this_obj.offset().leftthis_pos_left=$this_obj.position().leftthis_width=$this_obj.width()this_prev_width=$this_obj.prev('li').width()this_next_width=$this_obj.next('li').width();
                var this_off_right=_win_width-this_off_left-this_width;
                if(_scroller_w+2>_wrapper_width){
                    if(_opt.fingerClick==1){
                        if(this_index==1){
                            myScroll.scrollTo(-this_pos_left+this_prev_width0 _opt.clickScrollTime);
                        }else if(this_index==0){
                            myScroll.scrollTo(-this_pos_left0 _opt.clickScrollTime);
                        }else if(this_index==_obj_li.length-2){
                            myScroll.scrollBy(this_off_right-_wrapper_off_right-this_width0 _opt.clickScrollTime);
                        }else if(this_index==_obj_li.length-1){
                            myScroll.scrollBy(this_off_right-_wrapper_off_right0 _opt.clickScrollTime);
                        }else{
                            if(this_off_left-_wrapper_off_left-(this_width*_opt.fingerClick)<duibi){
                                myScroll.scrollTo(-this_pos_left+this_prev_width+(this_width*_opt.fingerClick)0 _opt.clickScrollTime);
                            }else if(this_off_right-_wrapper_off_right-(this_width*_opt.fingerClick)<duibi){
                                myScroll.scrollBy(this_off_right-this_next_width-_wrapper_off_right-(this_width*_opt.fingerClick)0 _opt.clickScrollTime);
                            }
                        }
                    }else{
                        if(this_index==1){
                            myScroll.scrollTo(-this_pos_left+this_prev_width0 _opt.clickScrollTime);
                        }else if(this_index==_obj_li.length-1){
                            if(this_off_right-_wrapper_off_right>1||this_off_right-_wrapper_off_right<-1){
                                myScroll.scrollBy(this_off_right-_wrapper_off_right0 _opt.clickScrollTime);
                            }
                        }else{
                            if(this_off_left-_wrapper_off_left<duibi){
                                myScroll.scrollTo(-this_pos_left+this_prev_width0 _opt.clickScrollTime);
                            }else if(this_off_right-_wrapper_off_right<duibi){
                                myScroll.scrollBy(this_off_right-this_next_width-_wrapper_off_right0 _opt.clickScrollTime);
                            }
                        }
                    }
                }
                $this_obj.addClass(_opt.className).siblings('li').removeClass(_opt.className);
                _opt.endClickScroll.call(this$this_obj);
            }
        });
    };
})(jQuery);