mailchimp popup by click
<script id="mcjs">
function showPopup() {
!function(c,h,i,m,p){m=c.createElement(h),p=c.getElementsByTagName(h)[0],m.async=1,m.src=i,p.parentNode.insertBefore(m,p)}(document,"script","https://chimpstatic.com/mcjs-connected/js/users/9f0ff62a247e302836e834a77/d986f27b70963c46c0ce59ec7.js");
//unsetting the cookie
document.cookie = "MCPopupClosed=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;";
document.cookie = "MCPopupSubscribed=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;";
}
document.getElementById("show-popup").onclick = function() { showPopup(); }
</script>