Ubuntu

/** * jquery.simplr.smoothscroll * version 1.0 * copyright (c) 2012 https://github.com/simov/simplr-smoothscroll * licensed under MIT * requires jquery.mousewheel - https://github.com/brandonaaron/jquery-mousewheel/ */ ;(function ($) { 'use strict' $.srSmoothscroll = function (options) { var self = $.extend({ step: 55, speed: 400, ease: 'swing', target: $('body'), container: $(window) }, options || {}) // private fields & init var container = self.container , top = 0 , step = self.step , viewport = container.height() , wheel = false var target if (self.target.selector == 'body') { target = (navigator.userAgent.indexOf('AppleWebKit') !== -1) ? self.target : $('html') } else { target = container } // events self.target.mousewheel(function (event, delta) { wheel = true if (delta < 0) // down top = (top+viewport) >= self.target.outerHeight(true) ? top : top+=step else // up top = top <= 0 ? 0 : top-=step target.stop().animate({scrollTop: top}, self.speed, self.ease, function () { wheel = false }) return false }) container .on('resize', function (e) { viewport = container.height() }) .on('scroll', function (e) { if (!wheel) top = container.scrollTop() }) } })(jQuery);