var sessionid;

function start_event(broadcast)
{
agent = navigator.appVersion
pageurl = "/fmm2/trackingscripts/stream_metrics.php?mode=0&agent=" + agent + "&broadcast=" + broadcast

new Ajax.Request(pageurl, { method:'get', onSuccess: function(transport)
{
sessionid = transport.responseText || "";
//alert(sessionid);
}
});
}

function stop_event()
{	
	pageurl = "/fmm2/trackingscripts/stream_metrics.php?mode=1&id=" + sessionid
	
	if(sessionid != "")
	{
	new Ajax.Request(pageurl, { method:'get', evalJS: false,	asynchronous: false, onSuccess: function(transport) 
	{ sessionid = transport.responseText || "";
	//alert(sessionid);
	}
});
}
}