in nearly all browsers* you can overwrite the window location in the
"onunload" event.

that means you can "keep" the user on a site. when you type a new url
in the address-bar, javascript overwrites it. thats a paradies for
fishers, porn-site-hoster etc......

here the html/javascript code:






Link 1

Link 2

Link 3

Link 4





cheers
Tobias Boonstoppel


ps: * i testet it on firefox (linux / window) opera (linux) and
internet explorer.