disclaimer: this is a hack.
it was created with main purpose of allowing a threadless cpython to interact simply with a javascript engine.
second thing is : it works and allow to write cool stuff directly in python like
window.alert('hello world')
window.document.title = "why should I have thrown javascript before"
window.document.getElementById('exit_label').textContent = "this way out"
maybe later implement callbacks for event bubble system of the browser Dom