code: public String dialogTabContentStart(String title, String attributes) {
  
          return dialogTabContent(HTML_START, title, attributes);
      }
docs: Returns the start html for the tab content area of the dialog window.<p>
  
  @param title the title for the dialog
  @param attributes additional attributes for the content &lt;div&gt; area of the tab dialog
  @return the start html for the tab content area of the dialog window