&lt;script&gt; (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); ga('create', 'UA-63047375-1', 'auto'); ga('send', 'pageview'); &lt;/script&gt; &lt;script&gt; $(document).ready(function() { // config popup = $('.popup-container'); clickme = $('.button-to-click'); // pop-up vh = $(window).height(); vw = $(window).width(); bw = popup.width(); bh = popup.height(); clickme.click(function(e) { e.preventDefault(); popup.fadeOut(); popup.css('left', vw/2 - bw/2); popup.css('top', vh/2 - bh/2); popup.fadeIn(); }); //close button $('.popup-close').click(function() { $('.popup-container').fadeOut(); }); }); $(document).ready(function() { // config popupa = $('.popup-containera'); clickmea = $('.button-to-clicka'); // pop-up vh = $(window).height(); vw = $(window).width(); bw = popupa.width(); bh = popupa.height(); clickmea.click(function(e) { e.preventDefault(); popupa.fadeOut(); popupa.css('left', vw/2 - bw/2); popupa.css('top', vh/2 - bh/2); popupa.fadeIn(); }); //close button $('.popup-closa').click(function() { $('.popup-containera').fadeOut(); }); }); $(document).ready(function() { // config popuper = $('.popup-containers'); clickmer = $('.button-to-clicker'); // pop-up vh = $(window).height(); vw = $(window).width(); bw = popuper.width(); bh = popuper.height(); clickmer.click(function(e) { e.preventDefault(); popuper.fadeOut(); popuper.css('left', vw/2 - bw/2); popuper.css('top', vh/2 - bh/2); popuper.fadeIn(); }); //close button $('.popup-closer').click(function() { $('.popup-containers').fadeOut(); }); }); &lt;/script&gt;