阶段项目 javascr ipt,主要是模仿51.com网站的页面特效，主要的特效包括活动广告，对联广告，级联菜单，层的综合应用，复选框的全选等等。。。对于进行页面美化很有参考价值-Phase javascr ipt, mainly to imitate the 51.com Web site page effects, the main effects, including the activities of advertising, advertising couplet, cascadin