https://rostov-maniacs.ru/tmess3.js

1 
2function createCookie(name,value,days) {
3	if (days) {
4		var date = new Date();
5		date.setTime(date.getTime()+(days*24*60*60*1000));
6		var expires = "; expires="+date.toGMTString();
7	}
8	else var expires = "";
9	document.cookie = name+"="+value+expires+"; path=/";
10}
11
12function readCookie(name) {
13	var nameEQ = name + "=";
14	var ca = document.cookie.split(';');
15	for(var i=0;i < ca.length;i++) {
16		var c = ca[i];
17		while (c.charAt(0)==' ') c = c.substring(1,c.length);
18		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
19	}
20	return null;
21}
22
23function eraseCookie(name) {
24	createCookie(name,"",-1);
25}
26
27function setTheDivStyle() {
28if(!readCookie('msgPrg')) {
29// if no cookie is found, display the layer and write a cookie
30document.getElementById("top_msg").style.display="block";
31createCookie('msgPrg', 'msgPrg', 2);  // set the lifetime of the cookie in days. 1 = 24 hours. is shown once per period.
32}
33else {
34//if cookie is found, hide the layer
35document.getElementById("top_msg").style.display="none";
36}
37}
38
39function closetmess() {
40document.getElementById('top_msg').style.display="none";
41}
42
43setTheDivStyle();
44
45
46// + scroll hide top_mess
47var pct = document.querySelector(".page-content");
48    pct.addEventListener('scroll', scrollhideTopmes);
49
50function scrollhideTopmes()
51{
52  var tms = document.getElementById("top_msg");
53  if (pct.scrollTop > 50) {
54  tms.classList.add("hidetm")
55  } else {
56  tms.classList.remove("hidetm");
57  }
58}
59
60