Flex 弱引用 强引用 资源
1.FLEX的强引用和弱引用问题weak reference
http://newtamato.iteye.com/blog/421675
2. AS3难查的错误根源之强弱引用在作祟
http://wu2yong3jinh.ixiezi.com/2010/06/24/asflex-as3%E9%9A%BE%E6%9F%A5%E7%9A%84%E9%94%99%E8%AF%AF%E6%A0%B9%E6%BA%90%E4%B9%8B%E5%BC%BA%E5%BC%B1%E5%BC%95%E7%94%A8%E5%9C%A8%E4%BD%9C%E7%A5%9F/
3.FLEX的强引用和弱引用问题weak?reference 2009-01-21
http://blog.sina.com.cn/s/blog_40e3fee00100c468.html
4.lex 4 中文经典视频教程！一周学习flex4
http://hi.baidu.com/%B6%BC%CA%D0%C8%CB%C0%B6%CC%EC/blog/item/99af6c2f04c6623f359bf795.html
5.
http://fhuan123.iteye.com/blog/627935
