code: function makeAddressToAUTFrame(w, frameNavigationalJSexpression)
  {
      if (w == null)
      {
          w = top;
          frameNavigationalJSexpression = "top";
      }
  
      if (w == selenium.browserbot.getCurrentWindow())
      {
          return frameNavigationalJSexpression;
      }
      for (var j = 0; j < w.frames.length; j++)
      {
          var t = makeAddressToAUTFrame(w.frames[j], frameNavigationalJSexpression + ".frames[" + j + "]");
          if (t != null)
          {
              return t;
          }
      }
      return null;
  }
docs: construct a JavaScript expression which leads to my frame (i.e., the frame containing the window in which this code is operating)