How can I adjust a div height dynamically ?

Hi everyone,

Do you guys know how to adjust the height of div dynamically (depending of the content of an iframe) ?
I have an iframe in a div , the iframe changes its content dynamically (expanding the height) and so I want the div container for this, to change its height dynamically too , in order to avoid any scrolling.

What will be the easiest way to do this ? (jquery, java script, ...) ?
Anyone know if there is a plugin for this?

Cheers,
Dinu