code: public String buildOrgUnitSelector() {
  
          StringBuffer html = new StringBuffer();
          html.append("<select style='width: 100%;' size='1' ");
          appendId(html, PARAM_OUFQN);
          html.append(">\n");
          for (CmsOrganizationalUnit ou : getOus()) {
              String selected = "";
              if (ou.getName().equals(m_oufqn)
                  || (CmsStringUtil.isNotEmptyOrWhitespaceOnly(m_oufqn) && ou.getName().equals(m_oufqn.substring(1)))) {
                  selected = " selected='selected'";
              }
              html.append("<option value='").append(ou.getName()).append("'").append(selected).append(">");
              html.append(ou.getDisplayName(m_locale));
              html.append("</option>\n");
          }
          html.append("</select>\n");
          return html.toString();
      }
docs: Returns the HTML code for selecting an organizational unit.<p>
  
  @return the HTML code for selecting an organizational unit