正在做SNS网站的转贴功能，抓取56时，他们视频代码加密了，怎么解密？如：http://www.56.com/u65/v_NDc4MTI2NTQ.html

Question

如这个页面上方的JS里：http://www.56.com/u65/v_NDc4MTI2NTQ.html视频代码被加密成了以下样子，怎么知道他们的加密算法，应该怎么解密？谢谢！
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