درخواست راهنمایی در کد پاپ آپ جاوا اسکریپت

من یه کد پاپ آپ دارم که در هر 24 ساعت 1 بار باز میشه و خیلی دقیق عمل میکنه
اما میخوام بجای اینکه در برگه جدید باز بشه، در یه پنجره جدید پشت صفحه باز بشه

کد HTML:

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<script type="text/javascript">
var needpop = 1;
var vc_cn = "jot9843504";
var vc_url = "http://www.balyan.ir/ads/redirect";
if (readCookie(vc_cn)) {
needpop = 0;
}else{
needpop = 1;
}
var PopWidth = 1024;
var PopHeight = 768;
var PopTargetingMethod = 100;
var PopUseDivLayer = 1;
var RTSDomain = vc_url;
var debugDomain = vc_url;
var Page_Popped = false;
var Page2_Popped = false;
var Page_Loaded = false;
var Page_Enter;
var MySiteDomain = window.location.href.split('/');
if (needpop == 1) {
InitPop()
}
function InitPop() {
Page_Enter = new Date();
if (window.captureEvents) {
window.captureEvents(Event.CLICK);
window.onclick = LoadStandardPop
} else document.onclick = LoadStandardPop
}
function SiteEnter() {
Page_Loaded = true
}
function createCookie(name, value, days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(24*60*60*1000));
var expires = "; expires=" + date.toGMTString()
} else var expires = "";
document.cookie = name + "=" + value + expires + "; path=/";
}
function readCookie(name) {
var ca = document.cookie.split(';');
var nameEQ = name + "=";
for (var i = 0; i < ca.length; i++) {
var c = ca[i];
while (c.charAt(0) == ' ') c = c.substring(1, c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length)
}
return null
}
function RetrieveCount() {
var cookieName = vc_cn;
var popSuccesses = readCookie(cookieName);
if (popSuccesses != null) popSuccesses = parseInt(popSuccesses);
else popSuccesses = 0;
return popSuccesses
}
function IncrementCount() {
var cookieName = vc_cn;
var popSuccesses = readCookie(cookieName);
if (popSuccesses != null) createCookie(cookieName, parseInt(popSuccesses) + 1, 1);
else createCookie(cookieName, 1, 1)
}
function LoadStandardPop() {
if (Page_Popped == true) return;
var pLoaded = false;
if (window.SymRealWinOpen) {
open = SymRealWinOpen
}
if (window.NS_ActualOpen) {
open = NS_ActualOpen
}
 
pLoaded = open(vc_url);
if (pLoaded) {
Page_Popped = true;
IncrementCount()
} else {
Page_Popped = true;
if (Page_Loaded) initAdLayer();
else XBrowserAddHandlerPops(window, "load", "initAdLayer")
}
window.focus()
}
</script>

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لطفا راهنمایی کنید