function closePopup() {
document.getElementById("ad-popup").style.display = "none"; }
document.addEventListener('DOMContentLoaded', function() {
var popup = document.getElementById('ad-popup');
var lastPopupTime = localStorage.getItem('lastPopupTime');
var currentTime = new Date().getTime();
if (!lastPopupTime || ((currentTime - lastPopupTime) / (1000 * 60 * 60)) >=0.15) {
popup.style.display = 'block';
localStorage.setItem('lastPopupTime', currentTime); }
window.onblur = function() {
setTimeout(function() {
closePopup();
}, 5000); }; });