I just came across this blog post - the author has a bit of Python, which produces a bit of HTML+Javascript, that can interactively hide/show the code parts of a notebook:<br><br><a href="http://ganwellresource.blogspot.co.uk/2012/11/hide-ipython-notebook-input-boxes.html">http://ganwellresource.blogspot.co.uk/2012/11/hide-ipython-notebook-input-boxes.html</a><br>

<br>Thomas<br>