article_operation("sticky = 1", "文章置顶成功", "文章置顶失败");
                         } else {
                             if ($cmd == "unsticky") {
                                 article_operation("sticky = 0", "文章取消置顶成功", "文章取消置顶失败");
                             } else {
                                 if ($cmd == "highlight") {
                                     article_operation("highlight = 1", "文章设置高亮成功", "文章设置高亮失败");
                                 } else {
                                     if ($cmd == "unhighlight") {
                                         article_operation("highlight = 0", "文章取消高亮成功", "文章取消高亮失败");
                                     } else {
                                         if ($cmd == "hide") {
                                             article_operation("status = 2", "文章隐藏成功", "文章隐藏失败");
                                         } else {
                                             if ($cmd == "unhide") {
                                                 article_operation("status = 0", "文章取消隐藏成功", "文章取消隐藏失败");
                                             } else {
                                                 alert("未定义操作!");
                                                 exit;
                                             }
                                         }
                                     }
                                 }
                             }
                         }
                     }
                 }
             }
         }
     }
 }
             alert("链接更新失败!");
         }
         frame_redirection("mainFrame", "control.php?act=browse_catalog&catalog_id=" . $_GET['catalog_id']);
     }
 } else {
     if ($cmd == "publish") {
         article_operation("status = 1", "文章发布成功", "文章发布失败");
     } else {
         if ($cmd == "unpublish") {
             article_operation("status = 0", "文章取消发布成功", "文章取消发布失败");
         } else {
             if ($cmd == "delete") {
                 article_operation("delete from {$tbl_link} ", "文章删除成功", "文章删除失败", 1);
             } else {
                 if ($cmd == "move") {
                     article_operation("catalog = " . $_GET['target_catalog'], "链接移动成功", "链接移动失败");
                 } else {
                     if ($cmd == "copy") {
                         $cause = " ( 0";
                         $article_ids = explode(',', $_GET['article_id']);
                         foreach ($article_ids as $id) {
                             $id = intval($id);
                             $cause = $cause . " or id = " . $id;
                         }
                         $cause = $cause . ")";
                         $sql = "select * from {$tbl_link} where {$cause}";
                         $rs = $db->Execute($sql);
                         if (!$rs) {
                             alert("链接复制失败");
                             reload_frame('mainFrame');
                             exit;