title: dojo.cookie delete completely
body: <p>I set up dojo.cookie("foo"), and it is called on several other pages. Then I set to delete the cookie with 'dojo.cookie("foo", null, {expire: -1})' whenever a certain page say, fooClear.html, is loaded. I noticed that dojo.cookie("list") is deleted only for fooClear.html; if I call dojo.cookie("foo") on the other pages, it still contains the old data unless I close the browser.      </p>
  
  <p>I believe this is a cache issue. But how do I delete a cookie completely in dojo? Is it possible at all?</p>