I was recently given this answer from GwynforWeb as to how to collapse a menu frame.
Put this link where ever you want in the frames pages to make the frame called frameName fill the whole window
<a href="#" onclick="top.location=top.frames['frameName'].location.href;return false">Remove Frames</a>
Is it possible to collapse 1 frame and open another in a relatively smooth way.
For example, say I have 2 frames, 1 is a left menu, other is main, can I collapse left menu and open a right menu frame without reloading the main page?