Call lisp function asynchronous

[Juraj Kubelka]

Hi!

Is it possible to call lisp function asynchronous?

I would like to use it with this intention: I have defined overlay on  
a region. And after few seconds I would like to delete this overlay.

         #'(lambda (overlay)
             (sleep-for 2)
             (delete-overlay overlay))

But I do not know how to call it without waiting for response  
(funcall delete-overlay overlay).
Can you help me?  Or is there better solution for it?

Thank you in advance.
Juraj