code: protected String defaultActionHtml() throws JspException {
  
          StringBuffer result = new StringBuffer(2048);
          result.append(defaultActionHtmlStart());
          result.append(defaultActionHtmlContent());
          result.append(defaultActionHtmlEnd());
          return result.toString();
      }
docs: Generates the dialog starting html code.<p>
  
  @return html code
  
  @throws JspException if something goes wrong