Check if connected to a network; jQuery

Question

I have searched through StackOverflow and have seen various topics on how to do this, but nothing that really pertains to my particular situation. I am writing (for a class)

Answer 1

Using window.navigator.onLine is inherantly unreliable, because the user might be connected to a network, but that network could not have internet access.

However, here is a barebones example

 
  
  
 
 
  
The network is: (state unknown)
 
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See the fiddle in action: http://jsfiddle.net/3rRWK/