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SmoothScroll

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 /*SmoothScroll*/
 (function() {
     function C() {
         if(document.body) {
             var a=document.body, b=document.documentElement, d=window.innerHeight, e=a.scrollHeight;
             n=0<=document.compatMode.indexOf("CSS")?b:a;
             u=a;
             f.keyboardSupport&&window.addEventListener("keydown", K, !1);
             D=!0;
             if(top!=self)E=!0;
             else if(e>d&&(a.offsetHeight<=d||b.offsetHeight<=d)) {
                 var c=!1;
                 b.style.height="auto";
                 setTimeout(function() {
                     c||b.scrollHeight==document.height||(c=!0, setTimeout(function() {
                         b.style.height=document.height+"px";
                         c=!1
                     }
                     , 500))
                 }
                 , 10);
                 n.offsetHeight<=d&&(d=document.createElement("div"), d.style.clear="both", a.appendChild(d))
             }
             f.fixedBackground||(a.style.backgroundAttachment="scroll", b.style.backgroundAttachment="scroll")
         }
     }
     function F(a, b, d, e) {
         e||(e=1E3);
         L(b, d);
         if(1!=f.accelerationMax) {
             var c=+new Date-x;
             c<f.accelerationDelta&&(c=(1+30/c)/2, 1<c&&(c=Math.min(c, f.accelerationMax), b*=c, d*=c));
             x=+new Date
         }
         p.push( {
             x:b, y:d, lastX:0>b?.99:-.99, lastY:0>d?.99:-.99, start:+new Date
         }
         );
         if(!y) {
             var g=a===document.body, h=function(c) {
                 c=+new Date;
                 for(var q=0, r=0, t=0;
                 t<p.length;
                 t++) {
                     var k=p[t], l=c-k.start, n=l>=f.animationTime, m=n?1:l/f.animationTime;
                     f.pulseAlgorithm&&(l=m, 1<=l?m=1:0>=l?m=0:(1==f.pulseNormalize&&(f.pulseNormalize/=G(1)), m=G(l)));
                     l=k.x*m-k.lastX>>0;
                     m=k.y*m-k.lastY>>0;
                     q+=l;
                     r+=m;
                     k.lastX+=l;
                     k.lastY+=m;
                     n&&(p.splice(t, 1), t--)
                 }
                 g?window.scrollBy(q, r):(q&&(a.scrollLeft+=q), r&&(a.scrollTop+=r));
                 b||d||(p=[]);
                 p.length?H(h, a, e/f.frameRate+1):y=!1
             }
             ;
             H(h, a, 0);
             y=!0
         }
     }
     function M(a) {
         D||C();
         var b=a.target, d=I(b);
         if(!d||a.defaultPrevented||"embed"===(u.nodeName||"").toLowerCase()||"embed"===(b.nodeName||"").toLowerCase()&&/\.pdf/i.test(b.src))return!0;
         var b=a.wheelDeltaX||0, e=a.wheelDeltaY||0;
         b||e||(e=a.wheelDelta||0);
         var c;
         if(c=!f.touchpadSupport)if(c=e) {
             c=Math.abs(c);
             h.push(c);
             h.shift();
             clearTimeout(N);
             c=h[0]==h[1]&&h[1]==h[2];
             var g=z(h[0], 120)&&z(h[1], 120)&&z(h[2], 120);
             c=!(c||g)
         }
         else c=void 0;
         if(c)return!0;
         1.2<Math.abs(b)&&(b*=f.stepSize/120);
         1.2<Math.abs(e)&&(e*=f.stepSize/120);
         F(d, -b, -e);
         a.preventDefault()
     }
     function K(a) {
         var b=a.target, d=a.ctrlKey||a.altKey||a.metaKey||a.shiftKey&&a.keyCode!==g.spacebar;
         if(/input|textarea|select|embed/i.test(b.nodeName)||b.isContentEditable||a.defaultPrevented||d||"button"===(b.nodeName||"").toLowerCase()&&a.keyCode===g.spacebar)return!0;
         var e;
         e=b=0;
         var d=I(u), c=d.clientHeight;
         d==document.body&&(c=window.innerHeight);
         switch(a.keyCode) {
             case g.up:e=-f.arrowScroll;
             break;
             case g.down:e=f.arrowScroll;
             break;
             case g.spacebar:e=a.shiftKey?1:-1;
             e=-e*c*.9;
             break;
             case g.pageup:e=.9*-c;
             break;
             case g.pagedown:e=.9*c;
             break;
             case g.home:e=-d.scrollTop;
             break;
             case g.end:c=d.scrollHeight-d.scrollTop-c;
             e=0<c?c+10:0;
             break;
             case g.left:b=-f.arrowScroll;
             break;
             case g.right:b=f.arrowScroll;
             break;
             default:return!0
         }
         F(d, b, e);
         a.preventDefault()
     }
     function O(a) {
         u=a.target
     }
     function A(a, b) {
         for(var d=a.length;
         d--;
         )B[J(a[d])]=b;
         return b
     }
     function I(a) {
         var b=[], d=n.scrollHeight;
         do {
             var e=B[J(a)];
             if(e)return A(b, e);
             b.push(a);
             if(d===a.scrollHeight) {
                 if(!E||n.clientHeight+10<d)return A(b, document.body)
             }
             else if(a.clientHeight+10<a.scrollHeight&&(overflow=getComputedStyle(a, "").getPropertyValue("overflow-y"), "scroll"===overflow||"auto"===overflow))return A(b, a)
         }
         while(a=a.parentNode)
     }
     function L(a, b) {
         a=0<a?1:-1;
         b=0<b?1:-1;
         if(v.x!==a||v.y!==b)v.x=a, v.y=b, p=[], x=0
     }
     function z(a, b) {
         return Math.floor(a/b)==a/b
     }
     function G(a) {
         var b;
         a*=f.pulseScale;
         1>a?b=a-(1-Math.exp(-a)):(b=Math.exp(-1), --a, a=1-Math.exp(-a), b+=a*(1-b));
         return b*f.pulseNormalize
     }
     var w= {
         frameRate:150, animationTime:600, stepSize:120, pulseAlgorithm:!0, pulseScale:6, pulseNormalize:1, accelerationDelta:50, accelerationMax:1, keyboardSupport:!0, arrowScroll:120, touchpadSupport:!0, fixedBackground:!0, excluded:""
     }
     , f=w, E=!1, v= {
         x:0, y:0
     }
     , D=!1, n=document.documentElement, u, h=[120, 120, 120], g= {
         left:37, up:38, right:39, down:40, spacebar:32, pageup:33, pagedown:34, end:35, home:36
     }
     , f=w, p=[], y=!1, x=+new Date, B= {
     }
     ;
     setInterval(function() {
         B= {
         }
     }
     , 1E4);
     var J=function() {
         var a=0;
         return function(b) {
             return b.uniqueID||(b.uniqueID=a++)
         }
     }
     (), N, H=function() {
         return window.requestAnimationFrame||window.webkitRequestAnimationFrame||function(a, b, d) {
             window.setTimeout(a, d||1E3/60)
         }
     }
     (), w=/chrome/i.test(window.navigator.userAgent);
     "onmousewheel"in document&&w&&(window.addEventListener("mousedown", O, !1), window.addEventListener("mousewheel", M, !1), window.addEventListener("load", C, !1))
 }
 )();

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