how can i edit the frecuency of this pop under?

hi this is a java cookie ublockable pop unders it opens once a day
how can i change the frecuency to open every 10 minutes?
hope you guys can help me, i have change the 1 days to many things without luck...

var stagedPopFrequency = "1 days";
var stagedCookieName = "__name";

if (!document.currentStage)
document.currentStage = 0;
document.currentStage++;

if (document.currentStage == 1) {
function stagedGetCookie(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 stagedSetCookie(Name, Value, Expire) {
if (Expire != null) {
var expireDate = new Date();
expireDate.setDate(expireDate.getDate() + parseInt(Expire));
document.cookie = Name+"="+Value+";path=/;expires=" + expireDate.toGMTString();
} else {
document.cookie = Name+"="+Value+";path=/";
}
}

function stagedResetCookie(Name) {
var expireDate = new Date();
expireDate.setDate(expireDate.getDate() - 10);
document.cookie = Name+"=;path=/;expires=" + expireDate.toGMTString();
}

function stagedPopUnder() {
if (stagedGetCookie(stagedCookieName) == '') {
var thisStage = 1;
var stageFunc = eval('window.popUnderStage'+thisStage);
if (stageFunc != undefined) {
stageFunc();
stagedSetCookie(stagedCookieName, thisStage + 1, stagedPopFrequency);
}
} else {
var thisStage = parseInt(stagedGetCookie(stagedCookieName));
var stageFunc = eval('window.popUnderStage'+thisStage);
if (stageFunc != undefined) {
stageFunc();
stagedSetCookie(stagedCookieName, thisStage + 1, stagedPopFrequency);
}
}
}

function stagedAttachBody() {
if (document.body) {
if (document.all) {
document.body.attachEvent('onclick', stagedPopUnder);
} else {
document.body.addEventListener('click', stagedPopUnder, false);
}
} else {
setTimeout('stagedAttachBody()', 200);
}
} stagedAttachBody();
}

if( parseInt(navigator.appVersion) > 3 )
{
winWidth = screen.availWidth;
winHeight = screen.availHeight;
}
else
{
winWidth = "1024";
winHeight = "768";
}

var stagedTmpFunc = function() {
var pu = window.open("http://www.youtube.com/watch?v=BRdq0GdkqlE", "_blank", "width=" + winWidth + ",height=" + winHeight + ",scrollbars=1,resizable=1,menubar=1");
pu.blur();
window.focus();

}
eval('window.popUnderStage'+document.currentStage+ ' = stagedTmpFunc;');
stagedTmpFunc = null;