(function(window,document,undefined){'use strict';var skrollr=window.skrollr={get:function(){return _instance;},init:function(options){return _instance||new Skrollr(options);},VERSION:'0.6.17'};var hasProp=Object.prototype.hasOwnProperty;var Math=window.Math;var getStyle=window.getComputedStyle;var documentElement;var body;var EVENT_TOUCHSTART='touchstart';var EVENT_TOUCHMOVE='touchmove';var EVENT_TOUCHCANCEL='touchcancel';var EVENT_TOUCHEND='touchend';var SKROLLABLE_CLASS='skrollable';var SKROLLABLE_BEFORE_CLASS=SKROLLABLE_CLASS+'-before';var SKROLLABLE_BETWEEN_CLASS=SKROLLABLE_CLASS+'-between';var SKROLLABLE_AFTER_CLASS=SKROLLABLE_CLASS+'-after';var SKROLLR_CLASS='skrollr';var NO_SKROLLR_CLASS='no-'+SKROLLR_CLASS;var SKROLLR_DESKTOP_CLASS=SKROLLR_CLASS+'-desktop';var SKROLLR_MOBILE_CLASS=SKROLLR_CLASS+'-mobile';var DEFAULT_EASING='linear';var DEFAULT_DURATION=1000;var DEFAULT_MOBILE_DECELERATION=0.004;var DEFAULT_SMOOTH_SCROLLING_DURATION=200;var ANCHOR_START='start';var ANCHOR_END='end';var ANCHOR_CENTER='center';var ANCHOR_BOTTOM='bottom';var SKROLLABLE_ID_DOM_PROPERTY='___skrollable_id';var rxTouchIgnoreTags=/^(?:input|textarea|button|select)$/i;var rxTrim=/^\s+|\s+$/g;var rxKeyframeAttribute=/^data(?:-(_\w+))?(?:-?(-?\d*\.?\d+p?))?(?:-?(start|end|top|center|bottom))?(?:-?(top|center|bottom))?$/;var rxPropValue=/\s*([\w\-\[\]]+)\s*:\s*(.+?)\s*(?:;|$)/gi;var rxPropEasing=/^([a-z\-]+)\[(\w+)\]$/;var rxCamelCase=/-([a-z])/g;var rxCamelCaseFn=function(str,letter){return letter.toUpperCase();};var rxNumericValue=/[\-+]?[\d]*\.?[\d]+/g;var rxInterpolateString=/\{\?\}/g;var rxRGBAIntegerColor=/rgba?\(\s*-?\d+\s*,\s*-?\d+\s*,\s*-?\d+/g;var rxGradient=/[a-z\-]+-gradient/g;var theCSSPrefix='';var theDashedCSSPrefix='';var detectCSSPrefix=function(){var rxPrefixes=/^(?:O|Moz|webkit|ms)|(?:-(?:o|moz|webkit|ms)-)/;if(!getStyle){return;}var style=getStyle(body,null);for(var k in style){theCSSPrefix=(k.match(rxPrefixes)||(+k==k&&style[k].match(rxPrefixes)));if(theCSSPrefix){break;}}if(!theCSSPrefix){theCSSPrefix=theDashedCSSPrefix='';return;}theCSSPrefix=theCSSPrefix[0];if(theCSSPrefix.slice(0,1)==='-'){theDashedCSSPrefix=theCSSPrefix;theCSSPrefix=({'-webkit-':'webkit','-moz-':'Moz','-ms-':'ms','-o-':'O'})[theCSSPrefix];}else{theDashedCSSPrefix='-'+theCSSPrefix.toLowerCase()+'-';}};var polyfillRAF=function(){var requestAnimFrame=window.requestAnimationFrame||window[theCSSPrefix.toLowerCase()+'RequestAnimationFrame'];var lastTime=_now();if(_isMobile||!requestAnimFrame){requestAnimFrame=function(callback){var deltaTime=_now()-lastTime;var delay=Math.max(0,1000/60-deltaTime);return window.setTimeout(function(){lastTime=_now();callback();},delay);};}return requestAnimFrame;};var polyfillCAF=function(){var cancelAnimFrame=window.cancelAnimationFrame||window[theCSSPrefix.toLowerCase()+'CancelAnimationFrame'];if(_isMobile||!cancelAnimFrame){cancelAnimFrame=function(timeout){return window.clearTimeout(timeout);};}return cancelAnimFrame;};var easings={begin:function(){return 0;},end:function(){return 1;},linear:function(p){return p;},quadratic:function(p){return p*p;},cubic:function(p){return p*p*p;},swing:function(p){return(-Math.cos(p*Math.PI)/2)+0.5;},sqrt:function(p){return Math.sqrt(p);},outCubic:function(p){return(Math.pow((p-1),3)+1);},bounce:function(p){var a;if(p<=0.5083){a=3;}else if(p<=0.8489){a=9;}else if(p<=0.96208){a=27;}else if(p<=0.99981){a=91;}else{return 1;}return 1-Math.abs(3*Math.cos(p*a*1.028)/a);}};function Skrollr(options){documentElement=document.documentElement;body=document.body;detectCSSPrefix();_instance=this;options=options||{};_constants=options.constants||{};if(options.easing){for(var e in options.easing){easings[e]=options.easing[e];}}_edgeStrategy=options.edgeStrategy||'set';_listeners={beforerender:options.beforerender,render:options.render};_forceHeight=options.forceHeight!==false;if(_forceHeight){_scale=options.scale||1;}_mobileDeceleration=options.mobileDeceleration||DEFAULT_MOBILE_DECELERATION;_smoothScrollingEnabled=options.smoothScrolling!==false;_smoothScrollingDuration=options.smoothScrollingDuration||DEFAULT_SMOOTH_SCROLLING_DURATION;_smoothScrolling={targetTop:_instance.getScrollTop()};_isMobile=((options.mobileCheck||function(){return(/Android|iPhone|iPad|iPod|BlackBerry|Windows Phone/i).test(navigator.userAgent||navigator.vendor||window.opera);})());if(_isMobile){_skrollrBody=document.getElementById('skrollr-body');if(_skrollrBody){_detect3DTransforms();}_initMobile();_updateClass(documentElement,[SKROLLR_CLASS,SKROLLR_MOBILE_CLASS],[NO_SKROLLR_CLASS]);}else{_updateClass(documentElement,[SKROLLR_CLASS,SKROLLR_DESKTOP_CLASS],[NO_SKROLLR_CLASS]);}_instance.refresh();_addEvent(window,'resize orientationchange',function(){var width=documentElement.clientWidth;var height=documentElement.clientHeight;if(height!==_lastViewportHeight||width!==_lastViewportWidth){_lastViewportHeight=height;_lastViewportWidth=width;_requestReflow=true;}});var requestAnimFrame=polyfillRAF();(function animloop(){_render();_animFrame=requestAnimFrame(animloop);}());return _instance;}Skrollr.prototype.refresh=function(elements){var elementIndex;var elementsLength;var ignoreID=false;if(elements===undefined){ignoreID=true;_skrollables=[];_skrollableIdCounter=0;elements=document.getElementsByTagName('*');}else{elements=[].concat(elements);}elementIndex=0;elementsLength=elements.length;for(;elementIndex<elementsLength;elementIndex++){var el=elements[elementIndex];var anchorTarget=el;var keyFrames=[];var smoothScrollThis=_smoothScrollingEnabled;var edgeStrategy=_edgeStrategy;if(!el.attributes){continue;}var attributeIndex=0;var attributesLength=el.attributes.length;for(;attributeIndex<attributesLength;attributeIndex++){var attr=el.attributes[attributeIndex];if(attr.name==='data-anchor-target'){anchorTarget=document.querySelector(attr.value);if(anchorTarget===null){throw'Unable to find anchor target "'+attr.value+'"';}continue;}if(attr.name==='data-smooth-scrolling'){smoothScrollThis=attr.value!=='off';continue;}if(attr.name==='data-edge-strategy'){edgeStrategy=attr.value;continue;}var match=attr.name.match(rxKeyframeAttribute);if(match===null){continue;}var kf={props:attr.value,element:el};keyFrames.push(kf);var constant=match[1];constant=constant&&_constants[constant.substr(1)]||0;var offset=match[2];if(/p$/.test(offset)){kf.isPercentage=true;kf.offset=((offset.slice(0,-1)|0)+constant)/100;}else{kf.offset=(offset|0)+constant;}var anchor1=match[3];var anchor2=match[4]||anchor1;if(!anchor1||anchor1===ANCHOR_START||anchor1===ANCHOR_END){kf.mode='absolute';if(anchor1===ANCHOR_END){kf.isEnd=true;}else if(!kf.isPercentage){kf.frame=kf.offset*_scale;delete kf.offset;}}else{kf.mode='relative';kf.anchors=[anchor1,anchor2];}}if(!keyFrames.length){continue;}var styleAttr,classAttr;var id;if(!ignoreID&&SKROLLABLE_ID_DOM_PROPERTY in el){id=el[SKROLLABLE_ID_DOM_PROPERTY];styleAttr=_skrollables[id].styleAttr;classAttr=_skrollables[id].classAttr;}else{id=(el[SKROLLABLE_ID_DOM_PROPERTY]=_skrollableIdCounter++);styleAttr=el.style.cssText;classAttr=_getClass(el);}_skrollables[id]={element:el,styleAttr:styleAttr,classAttr:classAttr,anchorTarget:anchorTarget,keyFrames:keyFrames,smoothScrolling:smoothScrollThis,edgeStrategy:edgeStrategy};_updateClass(el,[SKROLLABLE_CLASS],[]);}_reflow();elementIndex=0;elementsLength=elements.length;for(;elementIndex<elementsLength;elementIndex++){var sk=_skrollables[elements[elementIndex][SKROLLABLE_ID_DOM_PROPERTY]];if(sk===undefined){continue;}_parseProps(sk);_fillProps(sk);}return _instance;};Skrollr.prototype.relativeToAbsolute=function(element,viewportAnchor,elementAnchor){var viewportHeight=documentElement.clientHeight;var box=element.getBoundingClientRect();var absolute=box.top;var boxHeight=box.bottom-box.top;if(viewportAnchor===ANCHOR_BOTTOM){absolute-=viewportHeight;}else if(viewportAnchor===ANCHOR_CENTER){absolute-=viewportHeight/2;}if(elementAnchor===ANCHOR_BOTTOM){absolute+=boxHeight;}else if(elementAnchor===ANCHOR_CENTER){absolute+=boxHeight/2;}absolute+=_instance.getScrollTop();return(absolute+0.5)|0;};Skrollr.prototype.animateTo=function(top,options){options=options||{};var now=_now();var scrollTop=_instance.getScrollTop();_scrollAnimation={startTop:scrollTop,topDiff:top-scrollTop,targetTop:top,duration:options.duration||DEFAULT_DURATION,startTime:now,endTime:now+(options.duration||DEFAULT_DURATION),easing:easings[options.easing||DEFAULT_EASING],done:options.done};if(!_scrollAnimation.topDiff){if(_scrollAnimation.done){_scrollAnimation.done.call(_instance,false);}_scrollAnimation=undefined;}return _instance;};Skrollr.prototype.stopAnimateTo=function(){if(_scrollAnimation&&_scrollAnimation.done){_scrollAnimation.done.call(_instance,true);}_scrollAnimation=undefined;};Skrollr.prototype.isAnimatingTo=function(){return!!_scrollAnimation;};Skrollr.prototype.setScrollTop=function(top,force){_forceRender=(force===true);if(_isMobile){_mobileOffset=Math.min(Math.max(top,0),_maxKeyFrame);}else{window.scrollTo(0,top);}return _instance;};Skrollr.prototype.getScrollTop=function(){if(_isMobile){return _mobileOffset;}else{return window.pageYOffset||documentElement.scrollTop||body.scrollTop||0;}};Skrollr.prototype.getMaxScrollTop=function(){return _maxKeyFrame;};Skrollr.prototype.on=function(name,fn){_listeners[name]=fn;return _instance;};Skrollr.prototype.off=function(name){delete _listeners[name];return _instance;};Skrollr.prototype.destroy=function(){var cancelAnimFrame=polyfillCAF();cancelAnimFrame(_animFrame);_removeAllEvents();_updateClass(documentElement,[NO_SKROLLR_CLASS],[SKROLLR_CLASS,SKROLLR_DESKTOP_CLASS,SKROLLR_MOBILE_CLASS]);var skrollableIndex=0;var skrollablesLength=_skrollables.length;for(;skrollableIndex<skrollablesLength;skrollableIndex++){_reset(_skrollables[skrollableIndex].element);}documentElement.style.overflow=body.style.overflow='auto';documentElement.style.height=body.style.height='auto';if(_skrollrBody){skrollr.setStyle(_skrollrBody,'transform','none');}_instance=undefined;_skrollrBody=undefined;_listeners=undefined;_forceHeight=undefined;_maxKeyFrame=0;_scale=1;_constants=undefined;_mobileDeceleration=undefined;_direction='down';_lastTop=-1;_lastViewportWidth=0;_lastViewportHeight=0;_requestReflow=false;_scrollAnimation=undefined;_smoothScrollingEnabled=undefined;_smoothScrollingDuration=undefined;_smoothScrolling=undefined;_forceRender=undefined;_skrollableIdCounter=0;_edgeStrategy=undefined;_isMobile=false;_mobileOffset=0;_translateZ=undefined;};var _initMobile=function(){var initialElement;var initialTouchY;var initialTouchX;var currentElement;var currentTouchY;var currentTouchX;var lastTouchY;var deltaY;var initialTouchTime;var currentTouchTime;var lastTouchTime;var deltaTime;_addEvent(documentElement,[EVENT_TOUCHSTART,EVENT_TOUCHMOVE,EVENT_TOUCHCANCEL,EVENT_TOUCHEND].join(' '),function(e){var touch=e.changedTouches[0];currentElement=e.target;while(currentElement.nodeType===3){currentElement=currentElement.parentNode;}currentTouchY=touch.clientY;currentTouchX=touch.clientX;currentTouchTime=e.timeStamp;if(!rxTouchIgnoreTags.test(currentElement.tagName)){e.preventDefault();}switch(e.type){case EVENT_TOUCHSTART:if(initialElement){initialElement.blur();}_instance.stopAnimateTo();initialElement=currentElement;initialTouchY=lastTouchY=currentTouchY;initialTouchX=currentTouchX;initialTouchTime=currentTouchTime;break;case EVENT_TOUCHMOVE:deltaY=currentTouchY-lastTouchY;deltaTime=currentTouchTime-lastTouchTime;_instance.setScrollTop(_mobileOffset-deltaY,true);lastTouchY=currentTouchY;lastTouchTime=currentTouchTime;break;default:case EVENT_TOUCHCANCEL:case EVENT_TOUCHEND:var distanceY=initialTouchY-currentTouchY;var distanceX=initialTouchX-currentTouchX;var distance2=distanceX*distanceX+distanceY*distanceY;if(distance2<49){if(!rxTouchIgnoreTags.test(initialElement.tagName)){initialElement.focus();var clickEvent=document.createEvent('MouseEvents');clickEvent.initMouseEvent('click',true,true,e.view,1,touch.screenX,touch.screenY,touch.clientX,touch.clientY,e.ctrlKey,e.altKey,e.shiftKey,e.metaKey,0,null);initialElement.dispatchEvent(clickEvent);}return;}initialElement=undefined;var speed=deltaY/deltaTime;speed=Math.max(Math.min(speed,3),-3);var duration=Math.abs(speed/_mobileDeceleration);var targetOffset=speed*duration+0.5*_mobileDeceleration*duration*duration;var targetTop=_instance.getScrollTop()-targetOffset;var targetRatio=0;if(targetTop>_maxKeyFrame){targetRatio=(_maxKeyFrame-targetTop)/targetOffset;targetTop=_maxKeyFrame;}else if(targetTop<0){targetRatio=-targetTop/targetOffset;targetTop=0;}duration=duration*(1-targetRatio);_instance.animateTo((targetTop+0.5)|0,{easing:'outCubic',duration:duration});break;}});window.scrollTo(0,0);documentElement.style.overflow=body.style.overflow='hidden';};var _updateDependentKeyFrames=function(){var skrollable;var element;var anchorTarget;var keyFrames;var keyFrameIndex;var keyFramesLength;var kf;var skrollableIndex;var skrollablesLength;skrollableIndex=0;skrollablesLength=_skrollables.length;for(;skrollableIndex<skrollablesLength;skrollableIndex++){skrollable=_skrollables[skrollableIndex];element=skrollable.element;anchorTarget=skrollable.anchorTarget;keyFrames=skrollable.keyFrames;keyFrameIndex=0;keyFramesLength=keyFrames.length;for(;keyFrameIndex<keyFramesLength;keyFrameIndex++){kf=keyFrames[keyFrameIndex];var offset=kf.offset;if(kf.isPercentage){offset=offset*documentElement.clientHeight;kf.frame=offset;}if(kf.mode==='relative'){_reset(element);kf.frame=_instance.relativeToAbsolute(anchorTarget,kf.anchors[0],kf.anchors[1])-offset;_reset(element,true);}if(_forceHeight){if(!kf.isEnd&&kf.frame>_maxKeyFrame){_maxKeyFrame=kf.frame;}}}}_maxKeyFrame=Math.max(_maxKeyFrame,_getDocumentHeight());skrollableIndex=0;skrollablesLength=_skrollables.length;for(;skrollableIndex<skrollablesLength;skrollableIndex++){skrollable=_skrollables[skrollableIndex];keyFrames=skrollable.keyFrames;keyFrameIndex=0;keyFramesLength=keyFrames.length;for(;keyFrameIndex<keyFramesLength;keyFrameIndex++){kf=keyFrames[keyFrameIndex];if(kf.isEnd){kf.frame=_maxKeyFrame-kf.offset;}}skrollable.keyFrames.sort(_keyFrameComparator);}};var _calcSteps=function(fakeFrame,actualFrame){var skrollableIndex=0;var skrollablesLength=_skrollables.length;for(;skrollableIndex<skrollablesLength;skrollableIndex++){var skrollable=_skrollables[skrollableIndex];var element=skrollable.element;var frame=skrollable.smoothScrolling?fakeFrame:actualFrame;var frames=skrollable.keyFrames;var firstFrame=frames[0].frame;var lastFrame=frames[frames.length-1].frame;var beforeFirst=frame<firstFrame;var afterLast=frame>lastFrame;var firstOrLastFrame=frames[beforeFirst?0:frames.length-1];var key;var value;if(beforeFirst||afterLast){if(beforeFirst&&skrollable.edge===-1||afterLast&&skrollable.edge===1){continue;}_updateClass(element,[beforeFirst?SKROLLABLE_BEFORE_CLASS:SKROLLABLE_AFTER_CLASS],[SKROLLABLE_BEFORE_CLASS,SKROLLABLE_BETWEEN_CLASS,SKROLLABLE_AFTER_CLASS]);skrollable.edge=beforeFirst?-1:1;switch(skrollable.edgeStrategy){case'reset':_reset(element);continue;case'ease':frame=firstOrLastFrame.frame;break;default:case'set':var props=firstOrLastFrame.props;for(key in props){if(hasProp.call(props,key)){value=_interpolateString(props[key].value);skrollr.setStyle(element,key,value);}}continue;}}else{if(skrollable.edge!==0){_updateClass(element,[SKROLLABLE_CLASS,SKROLLABLE_BETWEEN_CLASS],[SKROLLABLE_BEFORE_CLASS,SKROLLABLE_AFTER_CLASS]);skrollable.edge=0;}}var keyFrameIndex=0;var framesLength=frames.length-1;for(;keyFrameIndex<framesLength;keyFrameIndex++){if(frame>=frames[keyFrameIndex].frame&&frame<=frames[keyFrameIndex+1].frame){var left=frames[keyFrameIndex];var right=frames[keyFrameIndex+1];for(key in left.props){if(hasProp.call(left.props,key)){var progress=(frame-left.frame)/(right.frame-left.frame);progress=left.props[key].easing(progress);value=_calcInterpolation(left.props[key].value,right.props[key].value,progress);value=_interpolateString(value);skrollr.setStyle(element,key,value);}}break;}}}};var _render=function(){if(_requestReflow){_requestReflow=false;_reflow();}var renderTop=_instance.getScrollTop();var afterAnimationCallback;var now=_now();var progress;if(_scrollAnimation){if(now>=_scrollAnimation.endTime){renderTop=_scrollAnimation.targetTop;afterAnimationCallback=_scrollAnimation.done;_scrollAnimation=undefined;}else{progress=_scrollAnimation.easing((now-_scrollAnimation.startTime)/_scrollAnimation.duration);renderTop=(_scrollAnimation.startTop+progress*_scrollAnimation.topDiff)|0;}_instance.setScrollTop(renderTop,true);}else if(!_forceRender){var smoothScrollingDiff=_smoothScrolling.targetTop-renderTop;if(smoothScrollingDiff){_smoothScrolling={startTop:_lastTop,topDiff:renderTop-_lastTop,targetTop:renderTop,startTime:_lastRenderCall,endTime:_lastRenderCall+_smoothScrollingDuration};}if(now<=_smoothScrolling.endTime){progress=easings.sqrt((now-_smoothScrolling.startTime)/_smoothScrollingDuration);renderTop=(_smoothScrolling.startTop+progress*_smoothScrolling.topDiff)|0;}}if(_isMobile&&_skrollrBody){skrollr.setStyle(_skrollrBody,'transform','translate(0, '+-(_mobileOffset)+'px) '+_translateZ);}if(_forceRender||_lastTop!==renderTop){_direction=(renderTop>_lastTop)?'down':(renderTop<_lastTop?'up':_direction);_forceRender=false;var listenerParams={curTop:renderTop,lastTop:_lastTop,maxTop:_maxKeyFrame,direction:_direction};var continueRendering=_listeners.beforerender&&_listeners.beforerender.call(_instance,listenerParams);if(continueRendering!==false){_calcSteps(renderTop,_instance.getScrollTop());_lastTop=renderTop;if(_listeners.render){_listeners.render.call(_instance,listenerParams);}}if(afterAnimationCallback){afterAnimationCallback.call(_instance,false);}}_lastRenderCall=now;};var _parseProps=function(skrollable){var keyFrameIndex=0;var keyFramesLength=skrollable.keyFrames.length;for(;keyFrameIndex<keyFramesLength;keyFrameIndex++){var frame=skrollable.keyFrames[keyFrameIndex];var easing;var value;var prop;var props={};var match;while((match=rxPropValue.exec(frame.props))!==null){prop=match[1];value=match[2];easing=prop.match(rxPropEasing);if(easing!==null){prop=easing[1];easing=easing[2];}else{easing=DEFAULT_EASING;}value=value.indexOf('!')?_parseProp(value):[value.slice(1)];props[prop]={value:value,easing:easings[easing]};}frame.props=props;}};var _parseProp=function(val){var numbers=[];rxRGBAIntegerColor.lastIndex=0;val=val.replace(rxRGBAIntegerColor,function(rgba){return rgba.replace(rxNumericValue,function(n){return n/255*100+'%';});});if(theDashedCSSPrefix){rxGradient.lastIndex=0;val=val.replace(rxGradient,function(s){return theDashedCSSPrefix+s;});}val=val.replace(rxNumericValue,function(n){numbers.push(+n);return'{?}';});numbers.unshift(val);return numbers;};var _fillProps=function(sk){var propList={};var keyFrameIndex;var keyFramesLength;keyFrameIndex=0;keyFramesLength=sk.keyFrames.length;for(;keyFrameIndex<keyFramesLength;keyFrameIndex++){_fillPropForFrame(sk.keyFrames[keyFrameIndex],propList);}propList={};keyFrameIndex=sk.keyFrames.length-1;for(;keyFrameIndex>=0;keyFrameIndex--){_fillPropForFrame(sk.keyFrames[keyFrameIndex],propList);}};var _fillPropForFrame=function(frame,propList){var key;for(key in propList){if(!hasProp.call(frame.props,key)){frame.props[key]=propList[key];}}for(key in frame.props){propList[key]=frame.props[key];}};var _calcInterpolation=function(val1,val2,progress){var valueIndex;var val1Length=val1.length;if(val1Length!==val2.length){throw'Can\'t interpolate between "'+val1[0]+'" and "'+val2[0]+'"';}var interpolated=[val1[0]];valueIndex=1;for(;valueIndex<val1Length;valueIndex++){interpolated[valueIndex]=val1[valueIndex]+((val2[valueIndex]-val1[valueIndex])*progress);}return interpolated;};var _interpolateString=function(val){var valueIndex=1;rxInterpolateString.lastIndex=0;return val[0].replace(rxInterpolateString,function(){return val[valueIndex++];});};var _reset=function(elements,undo){elements=[].concat(elements);var skrollable;var element;var elementsIndex=0;var elementsLength=elements.length;for(;elementsIndex<elementsLength;elementsIndex++){element=elements[elementsIndex];skrollable=_skrollables[element[SKROLLABLE_ID_DOM_PROPERTY]];if(!skrollable){continue;}if(undo){element.style.cssText=skrollable.dirtyStyleAttr;_updateClass(element,skrollable.dirtyClassAttr);}else{skrollable.dirtyStyleAttr=element.style.cssText;skrollable.dirtyClassAttr=_getClass(element);element.style.cssText=skrollable.styleAttr;_updateClass(element,skrollable.classAttr);}}};var _detect3DTransforms=function(){_translateZ='translateZ(0)';skrollr.setStyle(_skrollrBody,'transform',_translateZ);var computedStyle=getStyle(_skrollrBody);var computedTransform=computedStyle.getPropertyValue('transform');var computedTransformWithPrefix=computedStyle.getPropertyValue(theDashedCSSPrefix+'transform');var has3D=(computedTransform&&computedTransform!=='none')||(computedTransformWithPrefix&&computedTransformWithPrefix!=='none');if(!has3D){_translateZ='';}};skrollr.setStyle=function(el,prop,val){var style=el.style;prop=prop.replace(rxCamelCase,rxCamelCaseFn).replace('-','');if(prop==='zIndex'){if(isNaN(val)){style[prop]=val;}else{style[prop]=''+(val|0);}}else if(prop==='float'){style.styleFloat=style.cssFloat=val;}else{try{if(theCSSPrefix){style[theCSSPrefix+prop.slice(0,1).toUpperCase()+prop.slice(1)]=val;}style[prop]=val;}catch(ignore){}}};var _addEvent=skrollr.addEvent=function(element,names,callback){var intermediate=function(e){e=e||window.event;if(!e.target){e.target=e.srcElement;}if(!e.preventDefault){e.preventDefault=function(){e.returnValue=false;};}return callback.call(this,e);};names=names.split(' ');var name;var nameCounter=0;var namesLength=names.length;for(;nameCounter<namesLength;nameCounter++){name=names[nameCounter];if(element.addEventListener){element.addEventListener(name,callback,false);}else{element.attachEvent('on'+name,intermediate);}_registeredEvents.push({element:element,name:name,listener:callback});}};var _removeEvent=skrollr.removeEvent=function(element,names,callback){names=names.split(' ');var nameCounter=0;var namesLength=names.length;for(;nameCounter<namesLength;nameCounter++){if(element.removeEventListener){element.removeEventListener(names[nameCounter],callback,false);}else{element.detachEvent('on'+names[nameCounter],callback);}}};var _removeAllEvents=function(){var eventData;var eventCounter=0;var eventsLength=_registeredEvents.length;for(;eventCounter<eventsLength;eventCounter++){eventData=_registeredEvents[eventCounter];_removeEvent(eventData.element,eventData.name,eventData.listener);}_registeredEvents=[];};var _reflow=function(){var pos=_instance.getScrollTop();_maxKeyFrame=0;if(_forceHeight&&!_isMobile){body.style.height='auto';}_updateDependentKeyFrames();if(_forceHeight&&!_isMobile){body.style.height=(_maxKeyFrame+documentElement.clientHeight)+'px';}if(_isMobile){_instance.setScrollTop(Math.min(_instance.getScrollTop(),_maxKeyFrame));}else{_instance.setScrollTop(pos,true);}_forceRender=true;};var _getDocumentHeight=function(){var skrollrBodyHeight=(_skrollrBody&&_skrollrBody.offsetHeight||0);var bodyHeight=Math.max(skrollrBodyHeight,body.scrollHeight,body.offsetHeight,documentElement.scrollHeight,documentElement.offsetHeight,documentElement.clientHeight);return bodyHeight-documentElement.clientHeight;};var _getClass=function(element){var prop='className';if(window.SVGElement&&element instanceof window.SVGElement){element=element[prop];prop='baseVal';}return element[prop];};var _updateClass=function(element,add,remove){var prop='className';if(window.SVGElement&&element instanceof window.SVGElement){element=element[prop];prop='baseVal';}if(remove===undefined){element[prop]=add;return;}var val=element[prop];var classRemoveIndex=0;var removeLength=remove.length;for(;classRemoveIndex<removeLength;classRemoveIndex++){val=_untrim(val).replace(_untrim(remove[classRemoveIndex]),' ');}val=_trim(val);var classAddIndex=0;var addLength=add.length;for(;classAddIndex<addLength;classAddIndex++){if(_untrim(val).indexOf(_untrim(add[classAddIndex]))===-1){val+=' '+add[classAddIndex];}}element[prop]=_trim(val);};var _trim=function(a){return a.replace(rxTrim,'');};var _untrim=function(a){return' '+a+' ';};var _now=Date.now||function(){return+new Date();};var _keyFrameComparator=function(a,b){return a.frame-b.frame;};var _instance;var _skrollables;var _skrollrBody;var _listeners;var _forceHeight;var _maxKeyFrame=0;var _scale=1;var _constants;var _mobileDeceleration;var _direction='down';var _lastTop=-1;var _lastRenderCall=_now();var _lastViewportWidth=0;var _lastViewportHeight=0;var _requestReflow=false;var _scrollAnimation;var _smoothScrollingEnabled;var _smoothScrollingDuration;var _smoothScrolling;var _forceRender;var _skrollableIdCounter=0;var _edgeStrategy;var _isMobile=false;var _mobileOffset=0;var _translateZ;var _registeredEvents=[];var _animFrame;}(window,document));