code: public static Component createDropDown(String buttonHtml, Component content, String title) {
  
          PopupView pv = new PopupView(buttonHtml, content);
          pv.setDescription(title);
          pv.addStyleName(OpenCmsTheme.NAVIGATOR_DROPDOWN);
          pv.setHideOnMouseOut(false);
          return pv;
      }
docs: Creates a drop down menu.<p>
  
  @param buttonHtml the button HTML
  @param content the drop down content
  @param title the button title
  
  @return the component