title: ExtJS Datefield and change calling function
body: <p>I am using ExtJS 3.3.1 and below is my code for a DateField. When the DateField is valid I would like it to call this function, however nothing is currently happening when I change the field.</p>
  
  <pre><code> new Ext.form.DateField({
          id: dt.id,
          applyTo: dt,
          "format": 'm/d/Y',
          invalidClass : 'ux-status-error',
          validateOnBlur : true,
          valid: function () {refreshEmp();
          }
      }); 
  </code></pre>