// SmoothScroll for websites v1.2.1
// Licensed under the terms of the MIT license.

// People involved
//  - Balazs Galambosi (maintainer)  
//  - Michael Herf     (Pulse Algorithm)

(function(){function c(){var e=false;if(e){N("keydown",y)}if(t.keyboardSupport&&!e){T("keydown",y)}}function h(){if(!document.body)return;var e=document.body;var i=document.documentElement;var a=window.innerHeight;var f=e.scrollHeight;o=document.compatMode.indexOf("CSS")>=0?i:e;u=e;c();s=true;if(top!=self){r=true}else if(f>a&&(e.offsetHeight<=a||i.offsetHeight<=a)){var l=false;var h=function(){if(!l&&i.scrollHeight!=document.height){l=true;setTimeout(function(){i.style.height=document.height+"px";l=false},500)}};i.style.height="auto";setTimeout(h,10);if(o.offsetHeight<=a){var p=document.createElement("div");p.style.clear="both";e.appendChild(p)}}if(!t.fixedBackground&&!n){e.style.backgroundAttachment="scroll";i.style.backgroundAttachment="scroll"}}function m(e,n,r,i){i||(i=1e3);k(n,r);if(t.accelerationMax!=1){var s=+(new Date);var o=s-v;if(o<t.accelerationDelta){var u=(1+30/o)/2;if(u>1){u=Math.min(u,t.accelerationMax);n*=u;r*=u}}v=+(new Date)}p.push({x:n,y:r,lastX:n<0?.99:-.99,lastY:r<0?.99:-.99,start:+(new Date)});if(d){return}var a=e===document.body;var f=function(s){var o=+(new Date);var u=0;var l=0;for(var c=0;c<p.length;c++){var h=p[c];var v=o-h.start;var m=v>=t.animationTime;var g=m?1:v/t.animationTime;if(t.pulseAlgorithm){g=D(g)}var y=h.x*g-h.lastX>>0;var b=h.y*g-h.lastY>>0;u+=y;l+=b;h.lastX+=y;h.lastY+=b;if(m){p.splice(c,1);c--}}if(a){window.scrollBy(u,l)}else{if(u)e.scrollLeft+=u;if(l)e.scrollTop+=l}if(!n&&!r){p=[]}if(p.length){M(f,e,i/t.frameRate+1)}else{d=false}};M(f,e,0);d=true}function g(e){if(!s){h()}var n=e.target;var r=x(n);if(!r||e.defaultPrevented||C(u,"embed")||C(n,"embed")&&/\.pdf/i.test(n.src)){return true}var i=e.wheelDeltaX||0;var o=e.wheelDeltaY||0;if(!i&&!o){o=e.wheelDelta||0}if(!t.touchpadSupport&&A(o)){return true}if(Math.abs(i)>1.2){i*=t.stepSize/120}if(Math.abs(o)>1.2){o*=t.stepSize/120}m(r,-i,-o);e.preventDefault()}function y(e){var n=e.target;var r=e.ctrlKey||e.altKey||e.metaKey||e.shiftKey&&e.keyCode!==l.spacebar;if(/input|textarea|select|embed/i.test(n.nodeName)||n.isContentEditable||e.defaultPrevented||r){return true}if(C(n,"button")&&e.keyCode===l.spacebar){return true}var i,s=0,o=0;var a=x(u);var f=a.clientHeight;if(a==document.body){f=window.innerHeight}switch(e.keyCode){case l.up:o=-t.arrowScroll;break;case l.down:o=t.arrowScroll;break;case l.spacebar:i=e.shiftKey?1:-1;o=-i*f*.9;break;case l.pageup:o=-f*.9;break;case l.pagedown:o=f*.9;break;case l.home:o=-a.scrollTop;break;case l.end:var c=a.scrollHeight-a.scrollTop-f;o=c>0?c+10:0;break;case l.left:s=-t.arrowScroll;break;case l.right:s=t.arrowScroll;break;default:return true}m(a,s,o);e.preventDefault()}function b(e){u=e.target}function S(e,t){for(var n=e.length;n--;)w[E(e[n])]=t;return t}function x(e){var t=[];var n=o.scrollHeight;do{var i=w[E(e)];if(i){return S(t,i)}t.push(e);if(n===e.scrollHeight){if(!r||o.clientHeight+10<n){return S(t,document.body)}}else if(e.clientHeight+10<e.scrollHeight){overflow=getComputedStyle(e,"").getPropertyValue("overflow-y");if(overflow==="scroll"||overflow==="auto"){return S(t,e)}}}while(e=e.parentNode)}function T(e,t,n){window.addEventListener(e,t,n||false)}function N(e,t,n){window.removeEventListener(e,t,n||false)}function C(e,t){return(e.nodeName||"").toLowerCase()===t.toLowerCase()}function k(e,t){e=e>0?1:-1;t=t>0?1:-1;if(i.x!==e||i.y!==t){i.x=e;i.y=t;p=[];v=0}}function A(e){if(!e)return;e=Math.abs(e);f.push(e);f.shift();clearTimeout(L);var t=O(f[0],120)&&O(f[1],120)&&O(f[2],120);return!t}function O(e,t){return Math.floor(e/t)==e/t}function _(e){var n,r,i;e=e*t.pulseScale;if(e<1){n=e-(1-Math.exp(-e))}else{r=Math.exp(-1);e-=1;i=1-Math.exp(-e);n=r+i*(1-r)}return n*t.pulseNormalize}function D(e){if(e>=1)return 1;if(e<=0)return 0;if(t.pulseNormalize==1){t.pulseNormalize/=_(1)}return _(e)}var e={frameRate:150,animationTime:400,stepSize:120,pulseAlgorithm:true,pulseScale:8,pulseNormalize:1,accelerationDelta:20,accelerationMax:1,keyboardSupport:true,arrowScroll:50,touchpadSupport:true,fixedBackground:true,excluded:""};var t=e;var n=false;var r=false;var i={x:0,y:0};var s=false;var o=document.documentElement;var u;var a;var f=[120,120,120];var l={left:37,up:38,right:39,down:40,spacebar:32,pageup:33,pagedown:34,end:35,home:36};var t=e;var p=[];var d=false;var v=+(new Date);var w={};setInterval(function(){w={}},10*1e3);var E=function(){var e=0;return function(t){return t.uniqueID||(t.uniqueID=e++)}}();var L;var M=function(){return window.requestAnimationFrame||window.webkitRequestAnimationFrame||function(e,t,n){window.setTimeout(e,n||1e3/60)}}();var P=/chrome/i.test(window.navigator.userAgent);var H=null;if("onwheel"in document.createElement("div"))H="wheel";else if("onmousewheel"in document.createElement("div"))H="mousewheel";if(H&&P){T(H,g);T("mousedown",b);T("load",h)}})()