code: public void showPreview(CmsUUID id, Integer version, OfflineOnline offlineOnline) {
  
          getRpcProxy(I_CmsGwtDialogClientRpc.class).showPreview("" + id, version + ":" + offlineOnline);
      }
docs: Shows the prewview dialog for a given resource and version.<p>
  
  @param id the structure id of the resource
  @param version the version
  @param offlineOnline indicates whether we want the offlne or online version