from IPython.display import HTMLHTML('''<script>pre_show=true; function pre_toggle() { if (pre_show){ $('div.input').hide(); } else { $('div.input').show(); } pre_show = !pre_show} $( document ).ready(pre_toggle);</script><form action="javascript:pre_toggle()"><input type="submit" value="Click here to toggle on/off the raw pre."></form>''')
