<script src="https://cdn.onesignal.com/sdks/OneSignalSDK.js" async='async'></script>
<script>
var OneSignal = window.OneSignal || [];
OneSignal.push(["init", {
appId: "ee729955-975d-43d1-9ec4-ca63d887320e",
autoRegister: true, /* Set to true to automatically prompt visitors */
subdomainName: 'lifo',
notifyButton: {
enable: false /* Set to false to hide */
}
}]);
</script>

<a href="#" id="subscribe-link" style="display: none;"> <img src="http://i.giphy.com/3oz8xWcI2AARlRFCfu.gif" alt="Εγγραφείτε για να λαμβάνετε ενημερώσεις" height="250" width="300"> </a>
<script>
function subscribe() {
OneSignal.push(["registerForPushNotifications"]);
event.preventDefault();
}

var OneSignal = OneSignal || [];
/* This example assumes you've already initialized OneSignal */
OneSignal.push(function() {
// If we're on an unsupported browser, do nothing
if (!OneSignal.isPushNotificationsSupported()) {
return;
}
OneSignal.isPushNotificationsEnabled(function(isEnabled) {
if (isEnabled) {
// The user is subscribed to notifications
// Don't show anything
} else {
document.getElementById("subscribe-link").addEventListener('click', subscribe);
document.getElementById("subscribe-link").style.display = '';
}
});
});
</script>