code: @Override
      public String dialogBlockStart(String headline) {
  
          StringBuffer result = new StringBuffer(8);
          result.append("<tr><td colspan=\"5\">\n");
          result.append(super.dialogBlockStart(headline));
          return result.toString();
      }
docs: Builds the start HTML for a block with 3D border and optional subheadline in the dialog content area.<p>
  
  @param headline the headline String for the block
  @return 3D block start / end segment