ui Dialog Window

ui Dialog Window


I want to do an ajax call which return a window content. As a result
of ajax call, a dialog window opened with contents.
Problem is that, dialog window must be small enough if content is
little. Dialog window content should be exacly some width and height
value with content. But if ajax returned content is have wider and
higher than user window so dialog will be open with normal size with
appearing scrollbars.
is it possible to do that with jquery ui? 1.5 or 1.6?
thanks.