Jquery AJAX Global Timeout (Entire Application) Im using $.get & $.post (can't use $.ajax)

I have created the spring web application with jquery. For every ajax call im using $.get or $.post (NOT $.ajax).

But I didn't handle any ajax timeouts or ajax error. Now my application is deployed in the server, I can't make any major changes.

Pls help me how to handle the AJAX Timeout for the entire web application and i should alert("Ajax Timeout") globally. additionally whatever the ajax error, i should alert the error message to the user.

I heard about $.ajaxSetup and $.ajaxError
But How to use them in my web application, Do i need to add it in document.ready ??