[jQuery] Code simplification?

[r...@lighthouseuk.net]

Hi,
I'm new to jQuery and liking what I've seen so far.

I'm curious as to whether I can reduce my code, using chaining
perhaps?

Example...

$('.nav_company').hoverIntent(function() { // toggle display of
company sub menu content panel
        $('.nav_sub_default').removeClass('onscreen').addClass
('offscreen');
        $('.nav_sub_company').removeClass('offscreen').addClass
('onscreen');
        $('.nav_sub_products').removeClass('onscreen').addClass
('offscreen');
        $('.nav_sub_markets').removeClass('onscreen').addClass
('offscreen');
        $('.nav_sub_tools_support').removeClass('onscreen').addClass
('offscreen');
        $('.nav_sub_news_events').removeClass('onscreen').addClass
('offscreen');
      },function(){
        return false;
});

Based on the fact that there are 6 menu items (nav_sub_x) - I
currently have the above code entered 6 times to add and remove the
necessary classes from each of the relevant DIVs on the page.

Is there a cleaner way to do this?
Many thanks in advance.
Cheers,
Rob