Folding closed space for a hidden form

I'm making a form that is hidden until someone clicks on a link to open it.
I can hide the form, but there is just a large white space on the screen
where the form is hiding. Is there any way to close the white space when
the form is not showing? At the moment I'm using a <div> and hiding the
visibility, and then making it visible when the link is clicked:

<div id="form" style="visibility: hidden; etc...
Received on Mon Oct 24 02:14:02 2005