jQuery Forum

 It's not really a bug, although I have to admit I never really understood the point.  But it's easy enough to do a quick check:

$(btn).live('click', function(e) {

    if (e.which !== 1) return;

    <yourcodehere>

});

edit: changed "e.button" to "e.which"

 e.button is inconsistent across browsers and is not normalised by jQuery.  You'll need to use e.which == 1.

 But it is for Firefox only, so that it should be a bug

 I agree.  This should be a bug.  One of the reasons for using jQuery is its browser consistency.   If this fails in Firefox, browser consistency is no longer maintained,

Your example breaks IE, as e.which returns 'undefined', so two checks would be needed. If($.browser.ff && e.which === 1) do something.  But that's getting a little ugly.