[jQuery] How to abort fadein/out processing?

[adamscybot]

Hi,

This is my first time using jquery and Ive designed a small and simple
fadein/out script that acts as a rollover on this navigation bar:

http://relentless-servers.co.uk/Relentless%20Servers%20v3/

Here is the code:

$(document).ready(function() {
        $(".navbutton").not("#active").hover(function(){
                $(this).siblings(".rollover").fadeIn(300);
        },function(){
                $(this).siblings(".rollover").fadeOut(300);
        });
});

It works great. However, if a user quickly moves their mouse over the
nav buttons and repeats the process, the rollover affect will fadein/
out over and over again until its completed the cycle the amount of
times the user moved the mouse over the button back and forth.

I wish to change this behaviour so that, somehow, the processing is
aborted if it is noticed the mouse is not present after a fadeout is
completed.

I have no idea how to go about this.

Regards,

Adam