title: Extjs 4 Calendar how to implement
body: <p>I would like to implement an Calendar using Extjs 4 (4.1.3), that permits to me keeps dates, with ajax tecnology, from database. I would like that clicking on cell makes appear an editor that permits to me to modify the caratteristic of that date on database and so on.</p>
  
  <p>P.s. : I have tanke a look to that site, <a href="http://docs.sencha.com/ext-js/4-1/#!/example/calendar/index.html" rel="nofollow">http://docs.sencha.com/ext-js/4-1/#!/example/calendar/index.html</a>, but i really don't know how to its works and to download the code. BUt it is so difficult to implement that i need?</p>
  
  <p>Tanx.</p>