Update ping-sys.js

It is not working on my Chinese Windows8 64bit. I found that when destination is alive, there must be a (0% xxxx) in the result, so I decided to used that as a mark value.
Update ping-sys.js

It is not working on my Chinese Windows8 64bit. I found that when destination is alive, there must be a (0% xxxx) in the result, so I decided to used that as a mark value.
Update ping-sys.js

It is not working on my Chinese Windows8 64bit. I found that when destination is alive, there must be a (0% xxxx) in the result, so I decided to used that as a mark value.
Merge pull request #8 from weihua44/patch-1

Update ping-sys.js