smarty模板中，js中如何嵌套foreach或section循环

smarty模板中，js中怎么嵌套foreach或section循环？
这是静态页。

          <script>
                                     var box =new PPTBox();
                                     box.width = 1250; //宽度
                                     box.height = 490;//高度
                                     box.autoplayer = 3;//自动播放间隔时间
                                     //box.add({"url":"图片地址","title":"悬浮标题","href":"链接地址"})
                                     box.add({"url":"images/tu1.jpg","title":"悬浮提示标题1"});
                                     box.add({"url":"images/tu2.jpg","title":"悬浮提示标题2"});
                                     box.add({"url":"images/tu3.jpg","title":"悬浮提示标题3"});
                                     box.add({"url":"images/tu4.jpg","title":"悬浮提示标题4"});
                                     box.show();
                                </script> 
 

{literal}
                                 <script>
                                     var box =new PPTBox();
                                     box.width = 1250; //宽度
                                     box.height = 490;//高度
                                     box.autoplayer = 3;//自动播放间隔时间
                                     //box.add({"url":"图片地址","title":"悬浮标题","href":"链接地址"})
{foreach item=lop from=$tuan }
        box.add({"url":"./upload/admin/{$lop.image}","title":"{$lop.title}"});
{/foreach}
        box.show();
                                </script>

for(var i=0; i<obj.length; i++)
  {
      box.add({"url":'"'+obj[i].url+'"',"title":'"'+obj[i].title+'"'});
  }