Javascript Exit Popunder Script



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Tutorial : Javascript Exit Popunder

This tutorial will teach you how to create an exit popunder using javascript. This popunder will load once when the visitor exits from your webpage and can be used to increase awareness of your other services etc...

If you experience any problems please go to our webmaster forum.

Select all (Ctrl + A) the text script INSIDE of this text box directly below and copy it to your clipboard (Ctrl + C).

Open a your webpage that you want your popup to load in a program such as Wordpad or Notepad and paste the above text (Ctrl + V) in between the <HEAD> Tags of the document.

The <HEAD> of your webpage should now look like the code directly below. Edit the RED text only to reflect the web address and variable for the popunder that will be loaded. This popunder uses a cookie so it will only loads once per page visit per visitor, you can change this but it is not recommended as multiple popunders with the same URL will be present on the visitors computer.


<script language="JavaScript">

//specify page to pop-under
var popunder=""

//specify popunder window features
//set 1 to enable a particular feature, 0 to disable

//Pop-under only once per browser session? (0=no, 1=yes)
//Specifying 0 will cause popunder to load every time page is loaded var once_per_session=1

///No editing beyond here required///

function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) { // if cookie exists
offset += search.length
// set index of beginning of value
end = document.cookie.indexOf(";", offset);
// set index of end of cookie value
if (end == -1)
end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
return returnvalue;

function loadornot(){
if (get_cookie('popunder')==''){

function loadpopunder(){,"",winfeatures)

if (once_per_session==0)



After you have embedded the <HEAD> script into your page, you are ready to upload your pages.

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