title: How to refresh a Dojo ItemFileReadStore in a FilteringSelect box
body: <p>I want to be able to force a refresh of this Dojo ItemFileReadStore.  Any ideas how I do that?</p>
  
  <pre><code>            existingCasesStore = new dojo.data.ItemFileReadStore({ url: "some url here" });
              existingCasesStore.fetch();
  
              // Creates the Choose Existing list box
              new dojo.form.FilteringSelect({
                  store: existingCasesStore,
                  autocomplete: true,
                  maxHeight: "300",
                  required: false,
                  id: "choose_existing_select_id",
                  onChange: function(selected) {
                      utils.setStatusMessage("case_info_status", "", "&amp;nbsp;");
                  }
              }, "choose_existing_select_id");
  </code></pre>