参考地址：
1).[url]http://ted.onflash.org/2005/07/flash-player-mental-model-elastic.php[/url]
2).[url]http://www.senocular.com/flash/tutorials/asyncoperations/[/url]
参考地址：
1).[url]http://ted.onflash.org/2005/07/flash-player-mental-model-elastic.php[/url]
2).[url]http://www.senocular.com/flash/tutorials/asyncoperations/[/url]
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