/*!
 * jQuery Scrollify
 * Version 1.0.21
 *
 * Requires:
 * - jQuery 1.7 or higher
 *
 * https://github.com/lukehaas/Scrollify
 *
 * Copyright 2016, Luke Haas
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.



if touchScroll is false - update index

 */
(function(global,factory){"use strict";if(typeof define==='function'&&define.amd){define(['jquery'],function($){return factory($,global,global.document);});}else if(typeof module==='object'&&module.exports){module.exports=factory(require('jquery'),global,global.document);}else{factory(jQuery,global,global.document);}}(typeof window!=='undefined'?window:this,function($,window,document,undefined){"use strict";var heights=[],names=[],elements=[],overflow=[],index=0,currentIndex=0,interstitialIndex=1,hasLocation=false,timeoutId,timeoutId2,$window=$(window),portHeight,top=$window.scrollTop(),scrollable=false,locked=false,scrolled=false,manualScroll,swipeScroll,util,disabled=false,scrollSamples=[],scrollTime=new Date().getTime(),firstLoad=true,initialised=false,destination=0,wheelEvent='onwheel'in document?'wheel':document.onmousewheel!==undefined?'mousewheel':'DOMMouseScroll',eventListenerOptions={passive:false},settings={section:".section",sectionName:"section-name",interstitialSection:"",easing:"easeOutExpo",scrollSpeed:1100,offset:0,scrollbars:true,target:"html,body",standardScrollElements:false,setHeights:true,overflowScroll:true,updateHash:true,touchScroll:true,before:function(){},after:function(){},afterResize:function(){},afterRender:function(){}};function getportHeight(){return(window.innerHeight+settings.offset);}
function animateScroll(index,instant,callbacks,toTop){if(currentIndex===index){callbacks=false;}
if(disabled===true){return true;}
if(names[index]){scrollable=false;if(firstLoad===true){firstLoad=false;settings.afterRender();}
if(callbacks){if(typeof settings.before=='function'&&settings.before(index,elements)===false){return true;}}
interstitialIndex=1;destination=(!index)?0:heights[index];if(firstLoad===false&&currentIndex>index&&toTop===false){if(overflow[index]){portHeight=getportHeight();interstitialIndex=parseInt(elements[index].outerHeight()/portHeight);destination=parseInt(heights[index])+(elements[index].outerHeight()-portHeight);}}
if(settings.updateHash&&settings.sectionName&&!(firstLoad===true&&index===0)){if(history.pushState){try{history.replaceState(null,null,names[index]);}catch(e){if(window.console){console.warn("Scrollify warning: Page must be hosted to manipulate the hash value.");}}}else{window.location.hash=names[index];}}
currentIndex=index;if(instant){$(settings.target).stop().scrollTop(destination);if(callbacks){settings.after(index,elements);}}else{locked=true;if($().velocity){$(settings.target).stop().velocity('scroll',{duration:settings.scrollSpeed,easing:settings.easing,offset:destination,mobileHA:false});}else{$(settings.target).stop().animate({scrollTop:destination},settings.scrollSpeed,settings.easing);}
if(window.location.hash.length&&settings.sectionName&&window.console){try{if($(window.location.hash).length){console.warn("Scrollify warning: ID matches hash value - this will cause the page to anchor.");}}catch(e){}}
$(settings.target).promise().done(function(){locked=false;firstLoad=false;if(callbacks){settings.after(index,elements);}});}}}
function isAccelerating(samples){function average(num){var sum=0;var lastElements=samples.slice(Math.max(samples.length-num,1));for(var i=0;i<lastElements.length;i++){sum+=lastElements[i];}
return Math.ceil(sum/num);}
var avEnd=average(10);var avMiddle=average(70);if(avEnd>=avMiddle){return true;}else{return false;}}
var scrollify=function(options){initialised=true;$.easing['easeOutExpo']=function(x,t,b,c,d){return(t==d)?b+c:c*(-Math.pow(2,-10*t/d)+1)+b;};manualScroll={handleMousedown:function(){if(disabled===true){return true;}
scrollable=false;scrolled=false;},handleMouseup:function(){if(disabled===true){return true;}
scrollable=true;if(scrolled){manualScroll.calculateNearest(false,true);}},handleScroll:function(){if(disabled===true){return true;}
if(timeoutId){clearTimeout(timeoutId);}
timeoutId=setTimeout(function(){scrolled=true;if(scrollable===false){return false;}
scrollable=false;manualScroll.calculateNearest(false,true);},200);},calculateNearest:function(instant,callbacks){top=$window.scrollTop();var i=1,max=heights.length,closest=0,prev=Math.abs(heights[0]-top),diff;for(;i<max;i++){diff=Math.abs(heights[i]-top);if(diff<prev){prev=diff;closest=i;}}
if((atBottom()&&closest>index)||atTop()){index=closest;animateScroll(closest,instant,callbacks,false);}},wheelHandler:function(e){if(disabled===true){return true;}else if(settings.standardScrollElements){if($(e.target).is(settings.standardScrollElements)||$(e.target).closest(settings.standardScrollElements).length){return true;}}
if(!overflow[index]){e.preventDefault();}
var currentScrollTime=new Date().getTime();e=e||window.event;var value;if(e.originalEvent){value=e.originalEvent.wheelDelta||-e.originalEvent.deltaY||-e.originalEvent.detail;}else{value=e.wheelDelta||-e.deltaY||-e.detail;}
var delta=Math.max(-1,Math.min(1,value));if(scrollSamples.length>149){scrollSamples.shift();}
scrollSamples.push(Math.abs(value));if((currentScrollTime-scrollTime)>200){scrollSamples=[];}
scrollTime=currentScrollTime;if(locked){return false;}
if(delta<0){if(index<heights.length-1){if(atBottom()){if(isAccelerating(scrollSamples)){e.preventDefault();index++;locked=true;animateScroll(index,false,true,false);}else{return false;}}}}else if(delta>0){if(index>0){if(atTop()){if(isAccelerating(scrollSamples)){e.preventDefault();index--;locked=true;animateScroll(index,false,true,false);}else{return false}}}}},keyHandler:function(e){if(disabled===true||document.activeElement.readOnly===false){return true;}else if(settings.standardScrollElements){if($(e.target).is(settings.standardScrollElements)||$(e.target).closest(settings.standardScrollElements).length){return true;}}
if(locked===true){return false;}
if(e.keyCode==38||e.keyCode==33){if(index>0){if(atTop()){e.preventDefault();index--;animateScroll(index,false,true,false);}}}else if(e.keyCode==40||e.keyCode==34){if(index<heights.length-1){if(atBottom()){e.preventDefault();index++;animateScroll(index,false,true,false);}}}},init:function(){if(settings.scrollbars){$window.on('mousedown',manualScroll.handleMousedown);$window.on('mouseup',manualScroll.handleMouseup);$window.on('scroll',manualScroll.handleScroll);}else{$("body").css({"overflow":"hidden"});}
window.addEventListener(wheelEvent,manualScroll.wheelHandler,{passive:false});$window.on('keydown',manualScroll.keyHandler);}};swipeScroll={touches:{"touchstart":{"y":-1,"x":-1},"touchmove":{"y":-1,"x":-1},"touchend":false,"direction":"undetermined"},options:{"distance":30,"timeGap":800,"timeStamp":new Date().getTime()},touchHandler:function(event){if(disabled===true){return true;}else if(settings.standardScrollElements){if($(event.target).is(settings.standardScrollElements)||$(event.target).closest(settings.standardScrollElements).length){return true;}}
var touch;if(typeof event!=='undefined'){if(typeof event.touches!=='undefined'){touch=event.touches[0];switch(event.type){case'touchstart':swipeScroll.touches.touchstart.y=touch.pageY;swipeScroll.touches.touchmove.y=-1;swipeScroll.touches.touchstart.x=touch.pageX;swipeScroll.touches.touchmove.x=-1;swipeScroll.options.timeStamp=new Date().getTime();swipeScroll.touches.touchend=false;case'touchmove':swipeScroll.touches.touchmove.y=touch.pageY;swipeScroll.touches.touchmove.x=touch.pageX;if(swipeScroll.touches.touchstart.y!==swipeScroll.touches.touchmove.y&&(Math.abs(swipeScroll.touches.touchstart.y-swipeScroll.touches.touchmove.y)>Math.abs(swipeScroll.touches.touchstart.x-swipeScroll.touches.touchmove.x))){event.preventDefault();swipeScroll.touches.direction="y";if((swipeScroll.options.timeStamp+swipeScroll.options.timeGap)<(new Date().getTime())&&swipeScroll.touches.touchend==false){swipeScroll.touches.touchend=true;if(swipeScroll.touches.touchstart.y>-1){if(Math.abs(swipeScroll.touches.touchmove.y-swipeScroll.touches.touchstart.y)>swipeScroll.options.distance){if(swipeScroll.touches.touchstart.y<swipeScroll.touches.touchmove.y){swipeScroll.up();}else{swipeScroll.down();}}}}}
break;case'touchend':if(swipeScroll.touches[event.type]===false){swipeScroll.touches[event.type]=true;if(swipeScroll.touches.touchstart.y>-1&&swipeScroll.touches.touchmove.y>-1&&swipeScroll.touches.direction==="y"){if(Math.abs(swipeScroll.touches.touchmove.y-swipeScroll.touches.touchstart.y)>swipeScroll.options.distance){if(swipeScroll.touches.touchstart.y<swipeScroll.touches.touchmove.y){swipeScroll.up();}else{swipeScroll.down();}}
swipeScroll.touches.touchstart.y=-1;swipeScroll.touches.touchstart.x=-1;swipeScroll.touches.direction="undetermined";}}
default:break;}}}},down:function(){if(index<heights.length){if(atBottom()&&index<heights.length-1){index++;animateScroll(index,false,true,false);}else{portHeight=getportHeight();if(Math.floor(elements[index].height()/portHeight)>interstitialIndex){interstitialScroll(parseInt(heights[index])+(portHeight*interstitialIndex));interstitialIndex+=1;}else{interstitialScroll(parseInt(heights[index])+(elements[index].outerHeight()-portHeight));}}}},up:function(){if(index>=0){if(atTop()&&index>0){index--;animateScroll(index,false,true,false);}else{if(interstitialIndex>2){portHeight=getportHeight();interstitialIndex-=1;interstitialScroll(parseInt(heights[index])+(portHeight*interstitialIndex));}else{interstitialIndex=1;interstitialScroll(parseInt(heights[index]));}}}},init:function(){if(document.addEventListener&&settings.touchScroll){document.addEventListener('touchstart',swipeScroll.touchHandler,eventListenerOptions);document.addEventListener('touchmove',swipeScroll.touchHandler,eventListenerOptions);document.addEventListener('touchend',swipeScroll.touchHandler,eventListenerOptions);}}};util={refresh:function(withCallback,scroll){clearTimeout(timeoutId2);timeoutId2=setTimeout(function(){sizePanels(true);calculatePositions(scroll,false);if(withCallback){settings.afterResize();}},400);},handleUpdate:function(){util.refresh(false,false);},handleResize:function(){util.refresh(true,false);},handleOrientation:function(){util.refresh(true,true);}};settings=$.extend(settings,options);sizePanels(false);calculatePositions(false,true);if(true===hasLocation){animateScroll(index,false,true,true);}else{setTimeout(function(){manualScroll.calculateNearest(true,false);},200);}
if(heights.length){manualScroll.init();swipeScroll.init();$window.on("resize",util.handleResize);if(document.addEventListener){window.addEventListener("orientationchange",util.handleOrientation,false);}}
function interstitialScroll(pos){if($().velocity){$(settings.target).stop().velocity('scroll',{duration:settings.scrollSpeed,easing:settings.easing,offset:pos,mobileHA:false});}else{$(settings.target).stop().animate({scrollTop:pos},settings.scrollSpeed,settings.easing);}}
function sizePanels(keepPosition){if(keepPosition){top=$window.scrollTop();}
var selector=settings.section;overflow=[];if(settings.interstitialSection.length){selector+=","+settings.interstitialSection;}
if(settings.scrollbars===false){settings.overflowScroll=false;}
portHeight=getportHeight();$(selector).each(function(i){var $this=$(this);if(settings.setHeights){if($this.is(settings.interstitialSection)){overflow[i]=false;}else{if(($this.css("height","auto").outerHeight()<portHeight)||$this.css("overflow")==="hidden"){$this.css({"height":portHeight});overflow[i]=false;}else{$this.css({"height":$this.outerHeight()});if(settings.overflowScroll){overflow[i]=true;}else{overflow[i]=false;}}}}else{if(($this.outerHeight()<portHeight)||(settings.overflowScroll===false)){overflow[i]=false;}else{overflow[i]=true;}}});if(keepPosition){$window.scrollTop(top);}}
function calculatePositions(scroll,firstLoad){var selector=settings.section;if(settings.interstitialSection.length){selector+=","+settings.interstitialSection;}
heights=[];names=[];elements=[];$(selector).each(function(i){var $this=$(this);if(i>0){heights[i]=parseInt($this.offset().top)+settings.offset;}else{heights[i]=parseInt($this.offset().top);}
if(settings.sectionName&&$this.data(settings.sectionName)){names[i]="#"+$this.data(settings.sectionName).toString().replace(/ /g,"-");}else{if($this.is(settings.interstitialSection)===false){names[i]="#"+(i+1);}else{names[i]="#";if(i===$(selector).length-1&&i>1){heights[i]=heights[i-1]+(parseInt($($(selector)[i-1]).outerHeight())-parseInt($(window).height()))+parseInt($this.outerHeight());}}}
elements[i]=$this;try{if($(names[i]).length&&window.console){console.warn("Scrollify warning: Section names can't match IDs - this will cause the browser to anchor.");}}catch(e){}
if(window.location.hash===names[i]){index=i;hasLocation=true;}});if(true===scroll){animateScroll(index,false,false,false);}}
function atTop(){if(!overflow[index]){return true;}
top=$window.scrollTop();if(top>parseInt(heights[index])){return false;}else{return true;}}
function atBottom(){if(!overflow[index]){return true;}
top=$window.scrollTop();portHeight=getportHeight();if(top<parseInt(heights[index])+(elements[index].outerHeight()-portHeight)-28){return false;}else{return true;}}}
function move(panel,instant){var z=names.length;for(;z>=0;z--){if(typeof panel==='string'){if(names[z]===panel){index=z;animateScroll(z,instant,true,true);}}else{if(z===panel){index=z;animateScroll(z,instant,true,true);}}}}
scrollify.move=function(panel){if(panel===undefined){return false;}
if(typeof panel!=="number"&&panel.originalEvent){panel=$(this).attr("href");}
move(panel,false);};scrollify.instantMove=function(panel){if(panel===undefined){return false;}
move(panel,true);};scrollify.next=function(){if(index<names.length){index+=1;animateScroll(index,false,true,true);}};scrollify.previous=function(){if(index>0){index-=1;animateScroll(index,false,true,true);}};scrollify.instantNext=function(){if(index<names.length){index+=1;animateScroll(index,true,true,true);}};scrollify.instantPrevious=function(){if(index>0){index-=1;animateScroll(index,true,true,true);}};scrollify.destroy=function(){if(!initialised){return false;}
if(settings.setHeights){$(settings.section).each(function(){$(this).css("height","auto");});}
$window.off("resize",util.handleResize);if(settings.scrollbars){$window.off('mousedown',manualScroll.handleMousedown);$window.off('mouseup',manualScroll.handleMouseup);$window.off('scroll',manualScroll.handleScroll);}
window.removeEventListener(wheelEvent,manualScroll.wheelHandler);$window.off('keydown',manualScroll.keyHandler);if(document.addEventListener&&settings.touchScroll){document.removeEventListener('touchstart',swipeScroll.touchHandler,eventListenerOptions);document.removeEventListener('touchmove',swipeScroll.touchHandler,eventListenerOptions);document.removeEventListener('touchend',swipeScroll.touchHandler,eventListenerOptions);}
heights=[];names=[];elements=[];overflow=[];firstLoad=true;initialised=false;};scrollify.update=function(){if(!initialised){return false;}
util.handleUpdate();};scrollify.current=function(){return elements[index];};scrollify.currentIndex=function(){return index;};scrollify.disable=function(){disabled=true;};scrollify.enable=function(){disabled=false;if(initialised){manualScroll.calculateNearest(false,false);}};scrollify.isDisabled=function(){return disabled;};scrollify.setOptions=function(updatedOptions){if(!initialised){return false;}
if(typeof updatedOptions==="object"){settings=$.extend(settings,updatedOptions);util.handleUpdate();}else if(window.console){console.warn("Scrollify warning: setOptions expects an object.");}};$.scrollify=scrollify;return scrollify;}));