code: public static String getStyleUri(CmsJspActionElement jsp) {
  
          if (m_styleUri == null) {
  
              CmsProject project = jsp.getCmsObject().getRequestContext().getCurrentProject();
              try {
                  jsp.getCmsObject().getRequestContext().setCurrentProject(
                      jsp.getCmsObject().readProject(CmsProject.ONLINE_PROJECT_ID));
                  m_styleUri = jsp.link("/system/workplace/commons/style/");
              } catch (CmsException e) {
                  LOG.error(e.getLocalizedMessage());
              } finally {
                  jsp.getCmsObject().getRequestContext().setCurrentProject(project);
              }
          }
          return m_styleUri;
      }
docs: Returns the path to the cascading stylesheets.<p>
  
  @param jsp the JSP context
  @return the path to the cascading stylesheets