title: How to clear the cookies and set smsession as loggedoff once logout button click
body: <p>I used sencha tool for mobile app and in login  tried to open a dynamic restfulweb service page which has created in tomcat 6 server. And when click on logout it will take to main page.</p>
  
  <p>So if again click on login which app was opened in chrome explorer, which again taken to inside app where the previous session is still alive and without giving user name and password is entered the app.</p>
  
  <p>My requirement was once logoff button click active cookies SMSESSION or all active cookie should be expired by adding the code in logoff button key press function in Sencha Tool.</p>
  
  <p>When I logout from app created in Sencha tool, it's logging out but again when click on login it's taking into the application without giving the username, password. </p>
  
  <p>How could I clear the cookies active or set SMSESSION as LOGGEDOFF in EXTJS tool?</p>