docked-link.min.js

/**
 * jQuery Docked Link Plugin
 * https://github.com/mykisscool/docked-link#readme
 * Copyright 2017 Mike Petruniak <mike.petruniak@gmail.com>
 * Released under the MIT License
 */
!function(p){p.fn.dockedLink=function(o){o=p.extend({pixelsFromTop:1e3,position:"right"},o);var i=this,s=p(document).height(),n=p(window).height()/2,t=Math.round(i.height()/2);function e(){o.pixelsFromTop>s?i.css({display:i.is(":visible")?"block":"none",position:"fixed",top:n-t}):(i.css({display:i.is(":visible")?"block":"none",top:o.pixelsFromTop}),p(window).scrollTop()>=o.pixelsFromTop-(n-t)?i.css({position:"fixed",top:n-t}):i.css({position:"absolute",top:o.pixelsFromTop}))}return i.css(o.position,0),p(window).scroll(function(){e()}),e(),this}}(jQuery);