https://www.beresford.com/bitnami/banner.js

1(function() {
2  var banner = document.getElementById("bitnami-banner");
3  var closeButton = document.getElementById("bitnami-close-banner-button");
4
5  var toggleCloseButton = function toggleCloseButton(open) {
6   if (closeButton){
7      if(open && banner && banner.style.display != "none") {
8        closeButton.style.display="block";
9      } else {
10        closeButton.style.display="none";
11      }
12   }
13    return false;
14  };
15  var setCookie = function setCookie(cname, cvalue, exdays) {
16    var d = new Date();
17    d.setTime(d.getTime() + (exdays*24*60*60*1000));
18    var expires = "expires="+d.toUTCString();
19    document.cookie = cname + "=" + cvalue + "; " + expires;
20  };
21
22  var closeBanner = function closeBanner(open) {
23    if (banner) {
24      var suffix = banner.getAttribute('data-banner-id') || 'global';
25      banner.style.display = "none";
26      setCookie('_bitnami_closed_banner_' + suffix, "1", 30);
27    }
28    return false;
29  }; 
30
31
32  banner.onmouseover = function() { return toggleCloseButton(1); };
33  banner.onmouseout = function() { return toggleCloseButton(0); }; 
34  closeButton.onclick = closeBanner;
35}());