code: private String createError(String errorMsg) {
  
          StringBuffer result = new StringBuffer();
  
          result.append("ERR");
          result.append(errorMsg);
  
          return result.toString();
      }
docs: Creates the html code for the given error message.<p>
  
  @param errorMsg the error message to place in the html code
  
  @return the html code for the error message