title: how to prevent css and js being cached by internet service provider?
body: <p>I got "dump" isp that always cached internet pages and its css for at least 1 day. 
  Although the css / js in the server changed, the presented css are not changed (i have been clear my cache everytime)</p>
  
  <p>how to "tell" my isp not to cache some files like css and js ?</p>
  
  <p>thank you !! </p>
  
  <p>at the moment: i'm using proxy to check a under developed web so that it don't get cached ..</p>