title: add interactivity checkbox missing in excel 2010
body: <p>I'm trying to publish an excel file to the web and I want this file to be interactive for everyone.</p>
  
  <p>After searching Google I saw that in the old office you could do it by enabling the <strong>"add interactivity"</strong> checkbox that is now missing in office 2010.</p>
  
  <p>does anyone know how I can make my published excel file (now *.htm) be changed by any user through his Web browser?</p>