[jQuery] Hover + Interaction with other divs

[littleEndian]

I am trying to do something I think should be very simple: I have
three links over which when the users hover, it should trigger changes
in adjacent divs. What I have already done is:

$(document).ready(function () {

  $(#friendly .intro3).hover(function () {

    // intro3 here is a different div - from what little I read about
event bubbling, I understand
    // that since the element I want to add a class to is in a
different div,
   // this would fail to work
   $(.intro img).addClass('.classname');
  });

});

So question is how do I get to add/remove classes to elements in divs
other than the ones that actually trigger the hover?

Thanks.