[jQuery] Find element. How can I do this?

[shapper]

Hello,

I am trying to find update a plugin to create new functionality.
On the current version I have the following:

    var legend = fieldset.find(':first');
    var body = jQuery(document.createElement('div'));

- How can I get the first OL element inside fieldset to use it as body
instead of creating a new element (the div as it is currently?

- And can I set which element should be searched (ol, ul, div, etc)
inside the fieldset?

Thank you,
Miguel