anchor.diff:  
   Each GET request results in an intermediate small html page which checks
   if the browser tab fits the requested windowId. When the windowId is
  -valid, a unique token (called `dsRid`) will be generated for the current
  +valid, a unique token (called `dsrid`) will be generated for the current
   request and added to the URL. In addition a cookie with with the
  -dsRid/windowId will be added. On the server side, the verified windowId
  +dsrid/dswid will be added. On the server side, the verified windowId
   will be extracted from the cookie. For POST request detection, the
   windowId will be added as hidden input to all forms.
   
  
positive.code:     public String getClientWindowHtml()
      {
          return "<html><body>Loading...</body></html>";
      }
  }
  -------------------------------------------------------------------
  
negative.code: if a client will get an intermediate page or if he gets the result page
  directly.
  
  ===== Configuration
  
  ====== Change windowhandler.html
  
  To customize the look and feel of the windowhandler.html, you can simply
  provide a own via:
  