Znalazłem taki skrypcik:

[PHP] pobierz, plaintext 
// Popup routines
 
// Define array (url, x, y, blockingcookie,scrollbars,name)
// tutaj wpisujesz adresy kolejnych popupow
var url=new Array(4);
url[0]=['http://adres.pl/dziekuje.html','450','400','','no','subscribe';
url[1]=['http://adres.pl/popup.htm','450','400','','no','czy_subscribed';
 
var exit=true;
var win=null;
var days=1; // Number of days before next popup
 
// Use this routine on the onclick event of any links you DON'T want popups on
function setExitFalse(){
exit=false;
}
 
function showPopup(popupName){
// Get the optional name parameter
 
if(typeof(popupName) == "undefined") {
// If it is not defined, use the next rotated popup
pickNextRotation();
 
} else {
var popped;
// If it is defined, does that actual popup exist?
for (n=0;n<url.length;n++) {
// alert(url[n][5] + ? ? + popupName);
if (url[n][5] == ?) {
// It doesn?t exist, use a rotation popup
pickNextRotation(?nocheck?);
popped = true;
} else if (url[n][5] == popupName) {
// It does exist, use that popup
NewWindow(url[n][0],?popup?,url[n][1],url[n][2],?custom?,'front?,url[n][4],?nocheck?);
popped = true;
break;
}
}
if (!popped) {
pickNextRotation(?nocheck?);
}
}
}
 
function pickNextRotation(checkcookie) {
// Open window if cookie not found
// alert(?CFC: ? + checkcookie);
var i=0; // Default ID
 
// Get the last ID used
var allcookies=document.cookie;
var pos=allcookies.indexOf(?popup=?);
if(pos!=-1){
var start=pos+6;
var end=allcookies.indexOf(?;?,start);
if(end==-1) {
end=allcookies.length;
}
var i=allcookies.substring(start,end);
 
if (i==url.length-1) {
i=0;
} else {
i++;
}
}
//alert(?Start with ?+ i);
 
if (i > url.length) {
i = 0;
}
 
// Now loop until you find one that is not blocked
for (j=i; j < url.length; j++) {
var allowed=1;
//alert (?Checking url ? + j);
if (url[j][3] != ??) {
// There is a blocking cookie ? find the value
//alert(?Looking for cookie ? + url[j][3]);
var allcookies=document.cookie;
//alert(?allcookies=?+ allcookies);
var pos=allcookies.indexOf(url[j][3] + ?=?);
if(pos!=-1){
//alert(?Found subscribed at ? + pos);
var start=pos + url[j][3].length + 1;
var end=allcookies.indexOf(?;?,start);
if(end==-1) {
end=allcookies.length;
}
var cookieval=allcookies.substring(start,end);
allowed = 0;
} else {
//alert (?Subscribed not found?);
}
 
}
 
if (allowed==1) {
//alert(?allowed?);
break;
} else {
//alert (?not allowed:? + allowed);
}
 
} // Continue loop
//alert(?Ended with ? + j);
 
NewWindow(url[j][0],?popup?,url[j][1],url[j][2],?custom?,'front?,url[j][4],checkcookie);
setCookie(i);
}
 
function NewWindow(mypage,myname,w,h,pos,infocus,scrollbars,checkforcookie){
// alert (checkforcookie);
if (typeof(checkforcookie) == ?undefined?) {
if(GetCookie(?sid?) == ?999?){
return;
}
}
document.cookie=?sid=999; Path=/; Expires= ? + getFuture(days);
if(pos==?random?){
myleft=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;
mytop=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;
}
if(pos==?center?){
myleft=(screen.width)?(screen.width-w)/2:100;
mytop=(screen.height)?(screen.height-h)/2:100;
} else if((pos!=?center? && pos!=?random?) || pos==null){
myleft=0;
mytop=20;
}
settings=?width=? + w + ?,height=? + h + ?,top=? + mytop + ?,left=? + myleft + ?,scrollbars=? + scrollbars + ?,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes?;
 
win=window.open(mypage,myname,settings);
win.focus();
}
 
function getFuture(f){
var d = new Date();
d.setTime(d.getTime() + (86400000 * f)); // Milliseconds!
return d;
}
 
function GetCookie (name) {
var arg = name + ?=?;
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) {
var j = i + alen;
if (document.cookie.substring(i, j) == arg) {
return getCookieVal (j);
}
i = document.cookie.indexOf(? ?, i) + 1;
if (i == 0) break;
}
return null;
}
 
function setCookie(i){
var nextyear=new Date();
nextyear.setFullYear(nextyear.getFullYear()+1);
document.cookie=?popup=?+i+?;path=/;expires=?+nextyear.toGMTString();
}
 
function getCookieVal (offset) {
var endstr = document.cookie.indexOf (?;?, offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
[PHP] pobierz, plaintext 

zapisałem to jako okno.js i wsadziłem do głównego katalogu na serwerze.
w index'ie tuż za <head> wstawiłem kod:

[PHP] pobierz, plaintext 
<script type="text/javascript" src="okno.js"></script>
[PHP] pobierz, plaintext 

Niestety skrypt nie działa.

Proszę o pomoc kogoś doświadczonego.