Once do action via cookies

Show once

var cookieName = 'oncePopup';

// if cookie exists
if( 0 < getCookie(cookieName) ) return;
var date = new Date(new Date().getTime() + 1 * 60 * 60 * 1000); // 1 hour
document.cookie = cookieName + "=1; path=/; expires=" + date.toUTCString();

function getCookie(name) {
	var matches = document.cookie.match(new RegExp(
		"(?:^|; )" + name.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, '\\$1') + "=([^;]*)"
		));
	return matches ? decodeURIComponent(matches[1]) : undefined;
}