OnComm event with JavaScript doesn't fire

I'm trying to get a comm port working from a javascript using an
ActiveX control. *The port is basically working where I can receive
input from the serial port. *BUT - I can't seem to get the OnComm
event working so can receive the incomming characters async - any
ideas????
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Thanks!
Roman
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var MSComm1 = new ActiveXObject("MSCOMMLib.MSComm");
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function onTextClick() {
* view.beginAnimation(doRotation, 0, 360, 500);
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* * * * MSComm1.CommPort = 1;
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* * * * if (MSComm1.PortOpen == false)
* * * * {
* * * * * * * * MSComm1.Settings = "57600,n,8,1"
* * * * * * * * MSComm1.SThreshold = 1;
* * * * * * * * MSComm1.RThreshold = 1;
* * * * * * * * MSComm1.RTSEnable = 1;
* * * * // * * *MSComm1.InBufferSize = 1;
* * * * * * * * MSComm1.InputLen = 1;
* * * * * * * * MSComm1.InputMode = MSComm1.comInputModeText;
* * * * * * * * MSComm1.PortOpen = true;
* * * * }
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* * * * msg = "Test Message ";
// * * *MSComm1.Output = msg;
* * * * msg = MSComm1.Input;
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* * * * while(msg == "")
* * * * {
* * * * msg = MSComm1.Input;
* * * * }
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alert(msg);
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// * * *MSComm1.PortOpen = 0;
// * * *MSComm1.AboutBox();
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}
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function MSComm1_OnComm(){