[gears-users] Detect network connection in a boolean function?

[Steve Patrick]

Hi everybody
my question is: is it possible to develope a function isConnected()
that returns a boolean (true if the user have network connection...)??
I know there is a function that updates network state every "n"
seconds but I don´t want that, I want a function that returns a
boolean with the actual network status.
Looks easy, I have tryed this:

var connected=false;//global variable initializated
function isConnected()
{
        var resource_to_test = "resource.txt";
        try{
                var req=getXHR();
                req.open('GET',resource_to_test);
                req.onreadystatechange = function()
                                {
                                  if (req.readyState == 4)
                                   {
                                         if (req.status == 200)
                                                 {
                                                        connected=true;//update 
value
                                                }
                                 else
                                  {
                                      connected=false;//update value
                                  }
                                 }
                };
        req.send(null);
        return connected;// return the boolean, always return false
(initializated vaule)...
}


but the variable "connected" is updated by onreadystatechange event
AFTER the function isConnected() returns the value.
Is there a wat to do that?
Does Gears provide another way to develope a boolean function that
updates network state?
Thanks!