var grecaptchaReady = false;
    var onloadCallback = function(){ grecaptchaReady = true; };
    var verifyCallback = function(token) {
        document.dispatchEvent(new CustomEvent('grecaptchaVerified', {'detail': {response: token}}));
    };
    var expireCallback = function() {
        document.dispatchEvent(new Event('grecaptchaExpired'));
    };
    var errorCallback = function() {
        document.dispatchEvent(new Event('grecaptchaError'));
    }; 
   document.addEventListener('grecaptchaRender', function(e) {
        onloadCallback = function() {
            grecaptchaReady = true;
            grecaptcha.render(e.detail.element, {
                'sitekey': '6LdFdagbAAAAAKKrU1uyBMDrMkewNoEeh3NWRcI9',
                'callback': verifyCallback,
                'expired-callback': expireCallback,
                'error-callback': errorCallback
            });
        };
        if (grecaptchaReady) {
            onloadCallback();
        }
    });
    document.addEventListener('grecaptchaReset', function() {
        grecaptcha.reset();
    });