diff --git a/module/program/ui/browse.html.php b/module/program/ui/browse.html.php
index fe399e7680..864f877f4e 100644
--- a/module/program/ui/browse.html.php
+++ b/module/program/ui/browse.html.php
@@ -1,147 +1,11 @@
 <?php
-
 namespace zin;
 
-\commonModel::setMainMenu();
-
-$navItems = array();
-foreach(\customModel::getMainMenu() as $menuItem)
-{
-  $navItems[] = array(
-    'text'   => $menuItem->text,
-    'url'    => \commonModel::createMenuLink($menuItem, $app->tab),
-    'active' => $menuItem->order === 1,
-  );
-}
-
-/* Generate dropdown menus. */
-$userMenu = dropdown(setId('userMenu'));
-foreach(\commonModel::printUserBarZin() as $item) $userMenu->append(item($item));
-
-$globalCreateMenu = dropdown(setId('globalCreateMenu'));
-foreach(\commonModel::printCreateListZin() as $item) $globalCreateMenu->append(item($item));
-
-$switcherMenu = dropdown(setId('switcherMenu'));
-foreach(\commonModel::printVisionSwitcherZin() as $item) $switcherMenu->append(item($item));
-
-$cols  = array_values($config->program->dtable->fieldList);
-$fields = array_keys($config->program->dtable->fieldList);
-$data  = array_values($programs);
-
-foreach($data as $row)
-{
-  if(!property_exists($row, 'progress'))
-  {
-    if(isset($progressList[$row->id])) $row->progress = $progressList[$row->id];
-    else $row->progress = '';
-  }
-
-  if(!property_exists($row, 'actions'))
-  {
-    $row->actions = array();
-  }
-}
-
-\common::sortFeatureMenu();
-$statuses = array();
-foreach($lang->program->featureBar['browse'] as $key => $text)
-{
-  $statuses[] = array(
-    'text' => $text,
-    'active' => $key === $status,
-    'url' => \helper::createLink('browse', "status=$key&orderBy=$orderBy"),
-  );
-}
-
-$others = array();
-if(\common::hasPriv('project', 'batchEdit') and $programType != 'bygrid' and $hasProject === true)
-{
-  $others[] = array(
-    'text'    => $lang->project->edit,
-    'checked' => $this->cookie->editProject,
-    'type'    => 'checkbox'
-  );
-}
-
-$others[] = array(
-  'type'  => 'button',
-  'icon'  => 'search',
-  'text'  => $lang->user->search,
-  'class' => 'ghost'
-);
-
-$btnGroup = array();
-if(\common::hasPriv('project', 'create'))
-{
-  $btnGroup[] = array(
-    'text'  => $lang->project->create,
-    'icon'  => 'plus',
-    'class' => 'btn secondary',
-    'url'   => \helper::createLink('project', 'createGuide', "programID=0&from=PGM"),
-  );
-}
-
-if(\common::hasPriv('program', 'create'))
-{
-  $btnGroup[] = array(
-    'text' => $lang->program->create,
-    'icon'  => 'plus',
-    'class' => 'btn primary',
-    'url' => \helper::createLink('program', 'create')
-  );
-}
-
-Page(
-  set('title', $title),
-  Pageheader(
-    Pageheading(
-      $lang->{$app->tab}->common,
-      set('icon', $app->tab),
-      set('url', \helper::createLink($app->tab, 'browse')),
-    ),
-    Pagenavbar(
-      Zuinav(
-        set('js-render', false),
-        set('items', $navItems),
-      ),
-    ),
-    PageToolbar(
-      set('globalCreate', array(
-        'data-arrow'     => true,
-        'data-toggle'    => 'dropdown',
-        'data-trigger'   => 'hover',
-        'href'           => '#globalCreateMenu',
-      )),
-      set('avatar', array(
-        'name'   => $app->user->account,
-        'avatar' => $app->user->avatar,
-        'href'   => '#userMenu'
-      )),
-      set('switcher', array(
-        'text' => '研发管理界面',
-        'data-arrow'     => true,
-        'data-toggle'    => 'dropdown',
-        'data-trigger'   => 'hover',
-        'href'           => '#switcherMenu',
-      ))
-    ),
-  ),
-
-  Pagemain(
-    Mainmenu(
-      set('statuses', array('items' => $statuses)),
-      set('others', $others),
-      set('btnGroup', $btnGroup),
-    ),
-
-    Dtable(
-      set('js-render', true),
-      set('cols', $cols),
-      set('width', '100%'),
-      set('data', $data),
-    )
-  ),
-  $userMenu,
-  $globalCreateMenu,
-  $switcherMenu,
-);
+page
+(
+    div('Hello world!', icon('flag', 'test')),
+    icon('star', setClass('text-red'), 'ha', '123'),
+    setClass('text-primary'),
+    'Hello world!',
+    btn('Click me', set('type', 'primary'))
+)->print();
diff --git a/zin/core/wg.class.php b/zin/core/wg.class.php
index f8abed11e3..dac42ed0f3 100644
--- a/zin/core/wg.class.php
+++ b/zin/core/wg.class.php
@@ -217,10 +217,9 @@ class wg
             return $this;
         }
 
-        if(is_string($prop) && $value === '%%%NULL%%%')
-        {
-            return $this->props->get($prop);
-        }
+        if(!is_string($prop) || empty($prop)) return $this;
+
+        if($value === '%%%NULL%%%') return $this->props->get($prop);
 
         if($prop[0] === '#')
         {