jQuery侧边栏固定层锚点定位代码基于jquery-1.7.1.min.js制作，页面滚动一段距离出现固定层菜单栏，有劲爆商品、最新特卖、最后疯抢、即将开始、回到首部等菜单导航栏目。-jQuery sidebar fixed layer anchor location code based on jquery-1.7.1.min.js production, page scrolling distance fixed layer menu bar appears with the world s best product, the latest sale, the final berserk, is about to begin, and so on back to the first portion menu navigation section.