[jQuery] Find Element. Could someone, please, help me? Thank You

[shapper]

Hello,

On a plugin I have the following:

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

Instead of creating a div for the body I would like to get a existing
OL in the fieldset and make it the body.

How can I do this?

Thanks,
Miguel