[IE8]Object doesn't support property or method

```
Hello,
when I try to generate sha256 in this way:
var sms = "123";
CryptoJS.SHA256(sms);

I`ve error in developer tools console:
Object doesn't support property or method

This problem is only in IE 8.I can`t find any solution in internet, Can anyone 
help me?
```

Original issue reported on code.google.com by `k.lol...@gmail.com` on 29 Dec 2014 at 12:21
