[jQuery] event fired after SlideDown

[jQuery] event fired after SlideDown


This is probably truly basic, but I can't figure it out myself.
The problematic code calculates and manipulates objects positioning
(using offsetLeft and offsetTop), that runs on $(document).ready().
It runs as a module which is part of the Drupal CMS, so I don't have
control over some of the components.
Usually it works well, but when used inside a div that is not
displayed by default, rather by slideDown() function (it is called
'collapsed' in Drupal) - all the positioning calculations fail. I
would like to run these calculations when the slideDown event
completes. But I don't know how can I detect slideDown completing,
WITHOUT cooperation from the caller of slideDown...
Thanks for your help..
--yuval