[jQuery] how do it?

[jQuery] how do it?


I have a input = search and a form = form-search,
well i need create action keypress on input search i do this:
    $(document).ready(function() {
        $('input #search')
            .keypress(function(){
                $('#inf').fadeIn('normal');
            })
    });
but no sucess,
so i try it:
    $(document).ready(function() {
        $('#search')
            .keypress(function(){
                $('#inf').fadeIn('normal');
            })
    });
it`s ok but i want especify input first, i have two more objects with
this id, no inputs normal divs..
exist ?
$('input #search') or
$('input > #search') or
$('input search')
?
tks