(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(9).toUpperCase()+pointerEvent.substr(10):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,hasTransition:_prefixStyle('transition')in _elementStyle});me.isBadAndroid=/Android /.test(window.navigator.appVersion)&&!(/Chrome\/\d/.test(window.navigator.appVersion));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;while(el=el.offsetParent){left-=el.offsetLeft;top-=el.offsetTop;}
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)',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)){ev=document.createEvent('MouseEvents');ev.initMouseEvent('click',true,true,e.view,1,target.screenX,target.screenY,target.clientX,target.clientY,e.ctrlKey,e.altKey,e.shiftKey,e.metaKey,0,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;this.options={resizeScrollbars:true,mouseWheelSpeed:20,snapThreshold:0.334,topOffset:0,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};for(var i in options){this.options[i]=options[i];}
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;this.options.scrollY=this.options.eventPassthrough=='vertical'?false:this.options.scrollY;this.options.scrollX=this.options.eventPassthrough=='horizontal'?false:this.options.scrollX;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';}
if(this.options.shrinkScrollbars=='scale'){this.options.useTransition=false;}
this.options.invertWheelDirection=this.options.invertWheelDirection?-1:1;this.x=0;this.y=0;this.directionX=0;this.directionY=0;this._events={};this._init();this.refresh();this.scrollTo(this.options.startX,this.options.startY);this.enable();}
IScroll.prototype={version:'5.1.3',_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();}},destroy:function(){this._initEvents(true);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){if(utils.eventType[e.type]!=1){if(e.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._transitionTime();this.startTime=utils.getTime();if(this.options.useTransition&&this.isInTransition){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){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);if(timestamp-this.endTime>300&&(absDistX<10&&absDistY<10)){return;}
if(!this.directionLocked&&!this.options.freeScroll){if(absDistX>absDistY+this.options.directionLockThreshold){this.directionLocked='h';}else if(absDistY>=absDistX+this.options.directionLockThreshold){this.directionLocked='v';}else{this.directionLocked='n';}}
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;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);if(timestamp-this.startTime>300){this.startTime=timestamp;this.startX=this.x;this.startY=this.y;}
this._execEvent('scrollMove');},_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();if(this.resetPosition(this.options.bounceTime)){return;}
this.scrollTo(newX,newY);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;}
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;}
if(newX!=this.x||newY!=this.y){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;}
y=this.y>=this.minScrollY||this.maxScrollY>0?this.minScrollY:this.y<this.maxScrollY?this.maxScrollY:this.y;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;this.wrapperWidth=this.wrapper.clientWidth;this.wrapperHeight=this.wrapper.clientHeight;this.minScrollY=-this.options.topOffset||0;this.scrollerWidth=this.scroller.offsetWidth;this.scrollerHeight=this.scroller.offsetHeight+this.minScrollY;this.maxScrollX=this.wrapperWidth-this.scrollerWidth;this.maxScrollY=this.wrapperHeight-this.scrollerHeight+this.minScrollY;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();},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;if(!time||(this.options.useTransition&&easing.style)){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===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){time=time||0;this.scrollerStyle[utils.style.transitionDuration]=time+'ms';if(!time&&utils.isBadAndroid){this.scrollerStyle[utils.style.transitionDuration]='0.001s';}
if(this.indicators){for(var i=this.indicators.length;i--;){this.indicators[i].transitionTime(time);}}},_transitionTimingFunction:function(easing){this.scrollerStyle[utils.style.transitionTimingFunction]=easing;if(this.indicators){for(var i=this.indicators.length;i--;){this.indicators[i].transitionTimingFunction(easing);}}},_translate:function(x,y){if(this.options.useTransform){this.scrollerStyle[utils.style.transform]='translate('+x+'px,'+y+'px)'+this.translateZ;}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();}}},_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){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);}
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){indicators=indicators.concat(this.options.indicators);}
for(var i=indicators.length;i--;){this.indicators.push(new Indicator(this,indicators[i]));}
function _indicatorsMap(fn){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(){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();e.stopPropagation();var wheelDeltaX,wheelDeltaY,newX,newY,that=this;if(this.wheelTimeout===undefined){that._execEvent('scrollStart');}
clearTimeout(this.wheelTimeout);this.wheelTimeout=setTimeout(function(){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);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);},_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);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;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){var keys={pageUp:33,pageDown:34,end:35,home:36,left:37,up:38,right:39,down:40};var i;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,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(!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(0,0,0,0.5);border:1px solid rgba(255,255,255,0.9);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;this.wrapperStyle[utils.style.transitionDuration]=utils.isBadAndroid?'0.001s':'0ms';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.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);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;this.indicatorStyle[utils.style.transitionDuration]=time+'ms';if(!time&&utils.isBadAndroid){this.indicatorStyle[utils.style.transitionDuration]='0.001s';}},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;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{window.IScroll=IScroll;}})(window,document,Math);