广告嵌套document.write的非iframe方式的延迟加载无解嘛

用ControlJS优化阿里妈妈广告
http://ued.taobao.com/blog/2011/03/controljs-alimama/
让document.write的广告无阻塞的加载
http://stylechen.com/rewrite-documentwrite.html
DomWriter:延迟调用含有document.write的外部JS脚本
http://www.bigline.cn/blog/2010/12/02/dom-writer/

页面Flash只有在显示的时候才会被加载
http://morningbzy.blog.163.com/blog/static/144088527201010532912844/