smarty模板中，js中如何嵌套foreach或section循环

          <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>