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Filename : smooth-scroll.js
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/* SmoothScroll */
!function(){var s,i,c,a,o={frameRate:300,animationTime:600,stepSize:100,pulseAlgorithm:!0,pulseScale:4,pulseNormalize:1,accelerationDelta:50,accelerationMax:3,keyboardSupport:!0,arrowScroll:50,fixedBackground:!0,excluded:""},p=o,u=!1,d=!1,n={x:0,y:0},f=!1,m=document.documentElement,l=[],h=/^Mac/.test(navigator.platform),w={left:37,up:38,right:39,down:40,spacebar:32,pageup:33,pagedown:34,end:35,home:36},v={37:1,38:1,39:1,40:1};function y(){if(!f&&document.body){f=!0;var e=document.body,t=document.documentElement,o=window.innerHeight,n=e.scrollHeight;if(m=0<=document.compatMode.indexOf("CSS")?t:e,s=e,p.keyboardSupport&&Y("keydown",x),top!=self)d=!0;else if(Q&&o<n&&(e.offsetHeight<=o||t.offsetHeight<=o)){var r,a=document.createElement("div");a.style.cssText="position:absolute; z-index:-10000; top:0; left:0; right:0; 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n=/^(button|submit|radio|checkbox|file|color|image)$/i;if(e.defaultPrevented||/^(textarea|select|embed|object)$/i.test(t.nodeName)||N(t,"input")&&!n.test(t.type)||N(s,"video")||function(e){var t=e.target,o=!1;if(-1!=document.URL.indexOf("www.youtube.com/watch"))do{if(o=t.classList&&t.classList.contains("html5-video-controls"))break}while(t=t.parentNode);return o}(e)||t.isContentEditable||o)return!0;if((N(t,"button")||N(t,"input")&&n.test(t.type))&&e.keyCode===w.spacebar)return!0;if(N(t,"input")&&"radio"==t.type&&v[e.keyCode])return!0;var r=0,a=0,l=z(s);if(!l)return!d||!W||parent.keydown(e);var i=l.clientHeight;switch(l==document.body&&(i=window.innerHeight),e.keyCode){case w.up:a=-p.arrowScroll;break;case w.down:a=p.arrowScroll;break;case w.spacebar:a=-(e.shiftKey?1:-1)*i*.9;break;case w.pageup:a=.9*-i;break;case w.pagedown:a=.9*i;break;case w.home:l==document.body&&document.scrollingElement&&(l=document.scrollingElement),a=-l.scrollTop;break;case w.end:var 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