read_html failed parsing financial statements on WSJ.com
read_html can not parse financial statements on WSJ.com

```
import pandas as pd
url = 'http://quotes.wsj.com/CN/XSHG/600000/financials/annual/balance-sheet'
tb = pd.read_html(url)
print(tb[0])
```

Check the contents. Row and column names are parsed correctly, but it seems that all numbers including ',' or in parentheses are ignored.

I'm using Python 3.3.2 and pandas 0.12.0
