var InstallationUrl = 'newsletter/';
var bustcachevar = 1; // bust potential caching of external pages after initial request? (1=yes, 0=no)
var bustcacheparameter = "";
var recaptchaRendered = false;

function createRequestObject() {
	try	{
		xmlhttp = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
	} catch(e) {
		alert('Sorry, but your browser doesn\'t support XMLHttpRequest.');
	};
	return xmlhttp;
};

var http = createRequestObject();

function ajaxpage(url, containerid) {
	var page_request = createRequestObject();
	if (bustcachevar) {
        bustcacheparameter = (url.indexOf("?") != -1) ? "&" + new Date().getTime() : "?" + new Date().getTime();
    }

	page_request.open('GET', url + bustcacheparameter, true);
	page_request.send(null);

	page_request.onreadystatechange = function() {
		loadpage(page_request, containerid);
	}
};

function loadpage(page_request, containerid) {
	if (page_request.readyState == 4 && (page_request.status == 200 || window.location.href.indexOf("http") == -1)) {
		document.getElementById(containerid).innerHTML = page_request.responseText;

        if (!recaptchaRendered) {
            recaptchaCallback();
        }
	};
};

function CheckNewsletterForm1(checkonly) {
    checkonly = typeof checkonly !== 'undefined' ? checkonly : false;

	var flagFields = true;
	var re = /^(?!\+)[_a-z0-9-+']+(\.[_a-z0-9-+']+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,})$/i;
	var message = 'Please fill in all fields! \n';
	
	var poststr = "&email=" + encodeURIComponent(document.NewsletterForm1.email.value);
	
    if (document.NewsletterForm1.name.value == '') {
        message += 'Name \n';
        flagFields = false;
    } else {
        poststr += "&name=" + encodeURIComponent(document.NewsletterForm1.name.value);
    }
    if (document.NewsletterForm1.email.value == '') {
        message += 'Email \n';
        flagFields = false;
    }
    if (document.NewsletterForm1.email.value.length != 0 && document.NewsletterForm1.email.value.match(re) == null) {
        message += 'Email \n';
        flagFields = false;
    }

    var response = grecaptcha.getResponse();
    if (response == '') {
        message += 'Incorrect verification code \n';
        flagFields = false;
    } else {
        poststr += "&g-recaptcha-response=" + encodeURIComponent(response);
    }

    if (flagFields) {
        if (checkonly == false) {
            ajaxpage('newsletter/frontend/form.php?do=save&group=1' + poststr, 'divNewsletter1');
        }
    } else {
        alert(message);
    }
    
    return flagFields;
};

function recaptchaCallback() {
    if (typeof grecaptcha == 'undefined') {
        var script = document.createElement('script');
        script.type = 'text/javascript';
        script.src = 'https://www.google.com/recaptcha/api.js?onload=recaptchaCallback&hl=en';
        script.setAttribute('async', 'async');
        script.setAttribute('defer', 'defer');
        document.getElementsByTagName('head')[0].appendChild(script);
        return;
    }

    grecaptcha.render('recaptchaContainer', {
        'sitekey': '6LcaM0IUAAAAAJ3xff0DCYVITv9fb_DtBUc3UbP8',
        'callback': 'recaptchaCompleted',
        'render': 'explicit',
        'theme': 'light'
    });

    recaptchaRendered = true;
};

function recaptchaCompleted() {
    document.querySelector('#subscribeButton').disabled = false;
};

loadNewsletter = '<div id="divNewsletter1"></div><script type="text/javascript">ajaxpage("newsletter/frontend/form.php?group=1", "divNewsletter1");</script>';
document.writeln(loadNewsletter);