Pop-up call popu

[ferran]

Hi good afternoon, I have a popu-up window so that when visitors come in my forum, open a floating window for users to vote on the top of my forum, if possible q vote once users do not quit window until they pass 24 hours.

Example of what I want: http://www.elrincondelsymbian.com/Foro/cmps_index.php

I hope through your help as soon as possible, thank you.