I want to post an message to the server when user navigate off from the current page, I am using .unload right now but the result is unreliable, even in its document is said true:

The exact handling of the unload event
has varied from version to version of
browsers. For example, some versions
of Firefox trigger the event when a
link is followed, but not when the
window is closed. In practical usage,
behavior should be tested on all
supported browsers, and contrasted
with the proprietary beforeunload
event.

Should I use beforeunload event? Is it reliable?