span or div - remove space when hidden

Long Version:

I'm having a spacing problem. I have a table with all of my controls in it. At the bottom of the table I have a add button. When someone clicks on this button I want the span or div tag to become visible so that they can add information to a text box and submit their information. My problem is when the span or div is hidden the space where they are hidden is still visible. I don't want there to be extra space on the bottom of the table.


Short Version:
My problem is when the span or div is hidden the space where they are hidden is still visible (on the bottom of my bordered table). I don't want there to be extra space on the bottom of the table when the span is hidden. How can I resolve this?

Thanks!
Jimmy

how about setting the style display:none;