using collsionhandlerfloor

can i have an example of using collsionhandlerfloor cuz i dont know how to use collison handlers.

have you searched the forums ?
discourse.panda3d.org/viewtopic.php?t=2054
discourse.panda3d.org/viewtopic.php?t=2924

kinda lol
well i did the first link and it works very well except if i look at the ground i sink through it <_<