resizable div in resizable div

Hi,

A have div in div:

            <div id="A" >
                <div id="B" ></div>
            </div>

A and B are resizable.

$( "#A" ).resizable();
$( "#B" ).resizable();

All work fine, but if A set as disable,

$( "#A" ).resizable("disable");

B div is disabled too.

Exist any solution, how disabled only div A?