code: public String dialogHead(String title) {
  
          String escapedTitle;
          if (title == null) {
              escapedTitle = "";
          } else {
              escapedTitle = CmsEncoder.escapeHtml(title);
          }
  
          return "<div class=\"dialoghead\" unselectable=\"on\">" + escapedTitle + "</div>";
      }
docs: Builds the title of the dialog window.<p>
  
  @param title the title String for the dialog window
  
  @return the HTML title String for the dialog window