Код: Выделить всё
<script>(function($){$(document).ready(function(){var framerate=150;var animtime=600;var stepsize=150;var pulseAlgorithm=true;var pulseScale=5;var pulseNormalize=1;var disableKeyboard=false;var arrowscroll=50;var exclude="";var frame=false;var direction={x:0,y:0};var initdone=false;var fixedback=true;var activeElement;var root;var key={left:37,up:38,right:39,down:40,spacebar:32,pageup:33,pagedown:34,end:35,home:36};function initTest(){if(document.URL.indexOf("google.com/reader/view")>-1){disableKeyboard=true;}
if(exclude){var domains=exclude.split(/[,\n] ?/);for(var i=domains.length;i--;){if(document.URL.indexOf(domains[i])>-1){removeEvent("mousewheel",wheel);disableKeyboard=true;break;}}}}
function init(){if(!document.body)return;var body=document.body;var html=document.documentElement;var windowHeight=window.innerHeight;var scrollHeight=body.scrollHeight;root=(document.compatMode.indexOf('CSS')>=0)?html:body;activeElement=body;initTest();initdone=true;if(top!=self){frame=true;}else if(scrollHeight>windowHeight&&(body.offsetHeight<=windowHeight||html.offsetHeight<=windowHeight)){root.style.height="auto";if(root.offsetHeight<=windowHeight){var underlay=document.createElement("div");underlay.style.clear="both";body.appendChild(underlay);}}
if(document.URL.indexOf("mail.google.com")>-1){var s=document.createElement("style");s.innerHTML=".iu { visibility: hidden }";(document.getElementsByTagName("head")[0]||html).appendChild(s);}
if(!fixedback){body.style.backgroundAttachment="scroll";}
if(disableKeyboard){removeEvent("keydown",keydown);}}
var que=[];var pending=false;function scrollArray(elem,left,top,delay){delay||(delay=1000);directionCheck(left,top);que.push({x:left,y:top,lastX:(left<0)?0.99:-0.99,lastY:(top<0)?0.99:-0.99,start:+new Date});if(pending){return;}
var step=function(){var now=+new Date;var scrollX=0;var scrollY=0;for(var i=0;i<que.length;i++){var item=que[i];var elapsed=now-item.start;var finished=(elapsed>=animtime);var position=(finished)?1:elapsed / animtime;if(pulseAlgorithm){position=pulse(position);}
var x=(item.x*position-item.lastX)>>0;var y=(item.y*position-item.lastY)>>0;scrollX+=x;scrollY+=y;item.lastX+=x;item.lastY+=y;if(finished){que.splice(i,1);i--;}}
if(left){var lastLeft=elem.scrollLeft;elem.scrollLeft+=scrollX;if(scrollX&&elem.scrollLeft===lastLeft){left=0;}}
if(top){var lastTop=elem.scrollTop;elem.scrollTop+=scrollY;if(scrollY&&elem.scrollTop===lastTop){top=0;}}
if(!left&&!top){que=[];}
if(que.length){setTimeout(step,delay / framerate+1);}else{pending=false;}}
setTimeout(step,0);pending=true;}
function wheel(event){if(!initdone){init();}
var target=event.target;var overflowing=overflowingAncestor(target);if(!overflowing||event.defaultPrevented||isNodeName(activeElement,"embed")||(isNodeName(target,"embed")&&/\.pdf/i.test(target.src))){return true;}
var deltaX=event.wheelDeltaX||0;var deltaY=event.wheelDeltaY||0;if(!deltaX&&!deltaY){deltaY=event.wheelDelta||0;}
if(Math.abs(deltaX)>1.2){deltaX*=stepsize / 120;}
if(Math.abs(deltaY)>1.2){deltaY*=stepsize / 120;}
scrollArray(overflowing,-deltaX,-deltaY);event.preventDefault();}
function keydown(event){var target=event.target;var modifier=event.ctrlKey||event.altKey||event.metaKey;if(/input|textarea|embed/i.test(target.nodeName)||target.isContentEditable||event.defaultPrevented||modifier){return true;}
if(isNodeName(target,"button")&&event.keyCode===key.spacebar){return true;}
var shift,x=0,y=0;var elem=overflowingAncestor(activeElement);var clientHeight=elem.clientHeight;if(elem==document.body){clientHeight=window.innerHeight;}
switch(event.keyCode){case key.up:y=-arrowscroll;break;case key.down:y=arrowscroll;break;case key.spacebar:shift=event.shiftKey?1:-1;y=-shift*clientHeight*0.9;break;case key.pageup:y=-clientHeight*0.9;break;case key.pagedown:y=clientHeight*0.9;break;case key.home:y=-elem.scrollTop;break;case key.end:var damt=elem.scrollHeight-elem.scrollTop-clientHeight;y=(damt>0)?damt+10:0;break;case key.left:x=-arrowscroll;break;case key.right:x=arrowscroll;break;default:return true;}
scrollArray(elem,x,y);event.preventDefault();}
function mousedown(event){activeElement=event.target;}
var cache={};setInterval(function(){cache={};},10*1000);var uniqueID=(function(){var i=0;return function(el){return el.uniqueID||(el.uniqueID=i++);};})();function setCache(elems,overflowing){for(var i=elems.length;i--;)
cache[uniqueID(elems[i])]=overflowing;return overflowing;}
function overflowingAncestor(el){var elems=[];var rootScrollHeight=root.scrollHeight;do{var cached=cache[uniqueID(el)];if(cached){return setCache(elems,cached);}
elems.push(el);if(rootScrollHeight===el.scrollHeight){if(!frame||root.clientHeight+10<rootScrollHeight){return setCache(elems,document.body);}}else if(el.clientHeight+10<el.scrollHeight){overflow=getComputedStyle(el,"").getPropertyValue("overflow");if(overflow==="scroll"||overflow==="auto"){return setCache(elems,el);}}}while(el=el.parentNode);}
function addEvent(type,fn,bubble){window.addEventListener(type,fn,(bubble||false));}
function removeEvent(type,fn,bubble){window.removeEventListener(type,fn,(bubble||false));}
function isNodeName(el,tag){return el.nodeName.toLowerCase()===tag.toLowerCase();}
function directionCheck(x,y){x=(x>0)?1:-1;y=(y>0)?1:-1;if(direction.x!==x||direction.y!==y){direction.x=x;direction.y=y;que=[];}}
function pulse_(x){var val,start,expx;x=x*pulseScale;if(x<1){val=x-(1-Math.exp(-x));}else{start=Math.exp(-1);x-=1;expx=1-Math.exp(-x);val=start+(expx*(1-start));}
return val*pulseNormalize;}
function pulse(x){if(x>=1)return 1;if(x<=0)return 0;if(pulseNormalize==1){pulseNormalize /=pulse_(1);}
return pulse_(x);}
if(/chrome/.test(navigator.userAgent.toLowerCase())){addEvent("mousedown",mousedown);addEvent("mousewheel",wheel);addEvent("keydown",keydown);addEvent("load",init);}});})(jQuery);</script>
